Add resource usage to blue/green dashboard

- add Istio virtual service weight for blue/green

.gitignore

@@ -10,8 +10,11 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
+.DS_Store
+
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
 .idea/
 release/
 build/
+gcloud/

Dockerfile

@@ -6,7 +6,7 @@ RUN addgroup -S app \
     curl openssl netcat-openbsd
 
 WORKDIR /home/app
-
+COPY ./ui ./ui
 ADD podinfo .
 
 RUN chown -R app:app ./

Dockerfile.build

@@ -1,5 +1,6 @@
 FROM alpine:3.7
 
+COPY ./ui ./ui
 ADD podinfo /podinfo
 
 CMD ["./podinfo"]

Dockerfile.ci

@@ -24,7 +24,7 @@ RUN addgroup -S app \
 WORKDIR /home/app
 
 COPY --from=builder /go/src/github.com/stefanprodan/k8s-podinfo/podinfo .
-
+COPY ./ui ./ui
 RUN chown -R app:app ./
 
 USER app

Makefile

@@ -21,6 +21,7 @@ build:
 	@echo Building: linux/$(LINUX_ARCH)  $(VERSION) ;\
 	for arch in $(LINUX_ARCH); do \
 	    mkdir -p build/linux/$$arch && CGO_ENABLED=0 GOOS=linux GOARCH=$$arch go build -ldflags="-s -w -X $(GITREPO)/pkg/version.GITCOMMIT=$(GITCOMMIT)" -o build/linux/$$arch/$(NAME) ./cmd/$(NAME) ;\
+	    cp -r ui/ build/linux/$$arch/ui;\
 	done
 
 .PHONY: tar
@@ -45,6 +46,7 @@ docker-build: tar
 	@for arch in $(LINUX_ARCH); do \
 	    mkdir -p build/docker/linux/$$arch ;\
 	    tar -xzf release/$(NAME)_$(VERSION)_linux_$$arch.tgz -C build/docker/linux/$$arch ;\
+	    cp -r ui/ build/docker/linux/$$arch/ui;\
 	    if [ $$arch == amd64 ]; then \
 		cp Dockerfile build/docker/linux/$$arch ;\
 		cp Dockerfile build/docker/linux/$$arch/Dockerfile.in ;\
@@ -103,9 +105,10 @@ dep:
 .PHONY: charts
 charts:
 	cd charts/ && helm package podinfo/
+	cd charts/ && helm package podinfo-istio/
+	cd charts/ && helm package loadtest/
 	cd charts/ && helm package ambassador/
 	cd charts/ && helm package grafana/
 	cd charts/ && helm package ngrok/
-	cd charts/ && helm package weave-flux/
 	mv charts/*.tgz docs/
 	helm repo index docs --url https://stefanprodan.github.io/k8s-podinfo --merge ./docs/index.yaml

charts/grafana/templates/deployment.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   name: {{ template "grafana.fullname" . }}
   labels:
-    app: {{ template "grafana.name" . }}
+    app: {{ template "grafana.fullname" . }}
     chart: {{ template "grafana.chart" . }}
     release: {{ .Release.Name }}
     heritage: {{ .Release.Service }}
@@ -11,12 +11,12 @@ spec:
   replicas: {{ .Values.replicaCount }}
   selector:
     matchLabels:
-      app: {{ template "grafana.name" . }}
+      app: {{ template "grafana.fullname" . }}
       release: {{ .Release.Name }}
   template:
     metadata:
       labels:
-        app: {{ template "grafana.name" . }}
+        app: {{ template "grafana.fullname" . }}
         release: {{ .Release.Name }}
       annotations:
         prometheus.io/scrape: 'false'

charts/grafana/templates/service.yaml

@@ -15,5 +15,5 @@ spec:
       protocol: TCP
       name: http
   selector:
-    app: {{ template "grafana.name" . }}
+    app: {{ template "grafana.fullname" . }}
     release: {{ .Release.Name }}

charts/loadtest/Chart.yaml

@@ -0,0 +1,5 @@
+apiVersion: v1
+appVersion: "1.0"
+description: Hey load test Helm chart for Kubernetes
+name: loadtest
+version: 0.1.0

charts/loadtest/templates/NOTES.txt

@@ -0,0 +1 @@
+{{ template "loadtest.fullname" . }} has been deployed successfully!

charts/loadtest/templates/_helpers.tpl

@@ -2,7 +2,7 @@
 {{/*
 Expand the name of the chart.
 */}}
-{{- define "weave-cloud.name" -}}
+{{- define "loadtest.name" -}}
 {{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
@@ -11,7 +11,7 @@ Create a default fully qualified app name.
 We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
 If release name contains chart name it will be used as a full name.
 */}}
-{{- define "weave-cloud.fullname" -}}
+{{- define "loadtest.fullname" -}}
 {{- if .Values.fullnameOverride -}}
 {{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
 {{- else -}}
@@ -27,6 +27,6 @@ If release name contains chart name it will be used as a full name.
 {{/*
 Create chart name and version as used by the chart label.
 */}}
-{{- define "weave-cloud.chart" -}}
+{{- define "loadtest.chart" -}}
 {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
 {{- end -}}

charts/loadtest/templates/jobs.yaml

@@ -0,0 +1,31 @@
+{{- $fullname := include "loadtest.fullname" . -}}
+{{- $name := include "loadtest.name" . -}}
+{{- $chart := include "loadtest.chart" . -}}
+{{- $image := .Values.image -}}
+{{- range $test := .Values.tests }}
+---
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: {{ $fullname }}-{{ .name }}
+  labels:
+    app: {{ $name }}
+    chart: {{ $chart }}
+spec:
+  schedule: "*/1 * * * *"
+  concurrencyPolicy: Forbid
+  successfulJobsHistoryLimit: 1
+  failedJobsHistoryLimit: 3
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: loadtest
+            image: {{ $image }}
+            args:
+            - /bin/sh
+            - -c
+            - "hey -z 58s {{ $test.cmd }} {{ $test.url }}"
+          restartPolicy: OnFailure
+{{- end -}}

charts/loadtest/values.yaml

@@ -0,0 +1,11 @@
+# Default values for loadtest.
+
+image: stefanprodan/loadtest:latest
+
+tests:
+  - name: "blue"
+    url: "https://canary.istio.weavedx.com/api/echo"
+    cmd: "-h2 -m POST -d '{test: 1}' -H 'X-API-Version: 0.6.0' -c 50 -q 5"
+  - name: "green"
+    url: "https://canary.istio.weavedx.com/api/echo"
+    cmd: "-h2 -m POST -d '{test: 2}' -H 'X-API-Version: 0.6.1' -c 10 -q 5"

charts/podinfo-istio/Chart.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+appVersion: "0.6.0"
+description: Podinfo Helm chart for Istio
+name: podinfo-istio
+version: 0.1.0
+home: https://github.com/stefanprodan/k8s-podinfo
+sources:
+- https://github.com/stefanprodan/k8s-podinfo
+maintainers:
+  - name: stefanprodan
+    email: stefanprodan@users.noreply.github.com
+engine: gotpl

charts/podinfo-istio/README.md

@@ -0,0 +1,80 @@
+# Podinfo Istio
+
+Podinfo is a tiny web application made with Go 
+that showcases best practices of running microservices in Kubernetes.
+
+## Installing the Chart
+
+Create an Istio enabled namespace:
+
+```console
+kubectl create namespace demo
+kubectl label namespace demo istio-injection=enabled
+```
+
+Create an Istio Gateway in the `istio-system` namespace named `public-gateway`:
+
+```yaml
+apiVersion: networking.istio.io/v1alpha3
+kind: Gateway
+metadata:
+  name: public-gateway
+  namespace: istio-system
+spec:
+  selector:
+    istio: ingressgateway
+  servers:
+  - port:
+      number: 80
+      name: http
+      protocol: HTTP
+    hosts:
+    - "*"
+    tls:
+      httpsRedirect: true
+  - port:
+      number: 443
+      name: https
+      protocol: HTTPS
+    hosts:
+    - "*"
+    tls:
+      mode: SIMPLE
+      privateKey: /etc/istio/ingressgateway-certs/tls.key
+      serverCertificate: /etc/istio/ingressgateway-certs/tls.crt
+```
+
+Create the `frontend` release by specifying the external domain name:
+
+```console
+helm upgrade frontend --install ./charts/podinfo-istio \
+  --namespace=demo \
+  --set host=podinfo.example.com \
+  --set gateway.name=public-gateway \
+  --set gateway.create=false \
+  -f ./charts/podinfo-istio/frontend.yaml
+```
+
+Create the `backend` release:
+
+```console
+helm upgrade backend --install ./charts/podinfo-istio \
+  --namespace=demo \
+  -f ./charts/podinfo-istio/backend.yaml 
+```
+
+Create the `store` release:
+
+```console
+helm upgrade store --install ./charts/podinfo-istio \
+  --namespace=demo \
+  -f ./charts/podinfo-istio/store.yaml 
+```
+
+Start load test:
+
+```console
+helm upgrade --install loadtest ./charts/loadtest \
+  --namespace=loadtesting
+```
+

charts/podinfo-istio/apply.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+#Usage: fswatch -o ./podinfo-istio/ | xargs -n1 ./podinfo-istio/apply.sh
+
+set -e
+
+MARK='\033[0;32m'
+NC='\033[0m'
+
+log (){
+    echo -e "$(date +%Y-%m-%dT%H:%M:%S%z) ${MARK}${1}${NC}"
+}
+
+log "installing frontend"
+helm upgrade frontend --install ./podinfo-istio \
+  --namespace=demo \
+  --set host=canary.istio.weavedx.com \
+  --set gateway.name=public-gateway \
+  --set gateway.create=false \
+  -f ./podinfo-istio/frontend.yaml
+
+log "installing backend"
+helm upgrade backend --install ./podinfo-istio \
+  --namespace=demo \
+  -f ./podinfo-istio/backend.yaml
+
+log "installing store"
+helm upgrade store --install ./podinfo-istio \
+  --namespace=demo \
+  -f ./podinfo-istio/store.yaml
+
+log "finished installing frontend, backend and store"
+
+

charts/podinfo-istio/backend.yaml

@@ -0,0 +1,21 @@
+# Default values for backend demo.
+
+# expose the blue/green deployments inside the cluster
+host: backend
+
+# stable release
+blue:
+  replicas: 2
+  tag: "0.6.0"
+  backend: http://store:9898/api/echo
+
+# canary release
+green:
+  replicas: 2
+  tag: "0.6.1"
+  routing:
+    # target green callers
+    - match:
+      - sourceLabels:
+          color: green
+  backend: http://store:9898/api/echo

charts/podinfo-istio/frontend.yaml

@@ -0,0 +1,39 @@
+# Default values for frontend demo.
+
+# external domain
+host:
+exposeHost: true
+
+# no more than one Gateway can be created on a cluster
+# if TLS is enabled the istio-ingressgateway-certs secret must exist in istio-system ns
+# if you have a Gateway running you can set the name to your own gateway and turn off create
+gateway:
+  name: public-gateway
+  create: true
+  tls: true
+  httpsRedirect: true
+
+# stable release
+blue:
+  replicas: 2
+  tag: "0.6.0"
+  message: "Greetings from the blue frontend"
+  backend: http://backend:9898/api/echo
+
+# canary release
+green:
+  replicas: 2
+  tag: "0.6.1"
+  routing:
+    # target Safari
+    - match:
+      - headers:
+          user-agent:
+            regex: "^(?!.*Chrome).*Safari.*"
+    # target API clients by version
+    - match:
+      - headers:
+          x-api-version:
+            regex: "^(v{0,1})0\\.6\\.([1-9]).*"
+  message: "Greetings from the green frontend"
+  backend: http://backend:9898/api/echo

charts/podinfo-istio/store.yaml

@@ -0,0 +1,19 @@
+# Default values for backend demo.
+
+# expose the store deployment inside the cluster
+host: store
+
+# load balance 80/20 between blue and green
+blue:
+  replicas: 2
+  tag: "0.6.0"
+  backend: https://httpbin.org/anything
+  weight: 80
+
+green:
+  replicas: 2
+  tag: "0.6.1"
+  backend: https://httpbin.org/anything
+
+externalServices:
+  - httpbin.org

charts/podinfo-istio/templates/NOTES.txt

@@ -0,0 +1 @@
+ {{ template "podinfo-istio.fullname" . }} has been deployed successfully!

charts/podinfo-istio/templates/_helpers.tpl

@@ -2,42 +2,35 @@
 {{/*
 Expand the name of the chart.
 */}}
-{{- define "weave-flux.name" -}}
+{{- define "podinfo-istio.name" -}}
 {{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
 {{/*
 Create a default fully qualified app name.
 We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
-If release name contains chart name it will be used as a full name.
+The release name is used as a full name.
 */}}
-{{- define "weave-flux.fullname" -}}
+{{- define "podinfo-istio.fullname" -}}
 {{- if .Values.fullnameOverride -}}
 {{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
 {{- else -}}
-{{- $name := default .Chart.Name .Values.nameOverride -}}
-{{- if contains $name .Release.Name -}}
 {{- .Release.Name | trunc 63 | trimSuffix "-" -}}
-{{- else -}}
-{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 {{- end -}}
+
+{{- define "podinfo-istio.blue" -}}
+{{- printf "%s-%s" .Release.Name "blue" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "podinfo-istio.green" -}}
+{{- printf "%s-%s" .Release.Name "green" | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
 {{/*
 Create chart name and version as used by the chart label.
 */}}
-{{- define "weave-flux.chart" -}}
+{{- define "podinfo-istio.chart" -}}
 {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
-{{/*
-Create the name of the service account to use
-*/}}
-{{- define "weave-flux.serviceAccountName" -}}
-{{- if .Values.serviceAccount.create -}}
-    {{ default (include "weave-flux.fullname" .) .Values.serviceAccount.name }}
-{{- else -}}
-    {{ default "default" .Values.serviceAccount.name }}
-{{- end -}}
-{{- end -}}

charts/podinfo-istio/templates/blue-deployment.yaml

@@ -0,0 +1,76 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ template "podinfo-istio.blue" . }}
+  labels:
+    app: {{ template "podinfo-istio.fullname" . }}
+    chart: {{ template "podinfo-istio.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    color: blue
+    version: {{ .Values.blue.tag }}
+spec:
+  replicas: {{ .Values.blue.replicas }}
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+      app: {{ template "podinfo-istio.fullname" . }}
+      color: blue
+  template:
+    metadata:
+      labels:
+        app: {{ template "podinfo-istio.fullname" . }}
+        color: blue
+        version: {{ .Values.blue.tag }}
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+        - name: podinfod
+          image: "{{ .Values.blue.repository }}:{{ .Values.blue.tag }}"
+          imagePullPolicy: {{ .Values.imagePullPolicy }}
+          command:
+            - ./podinfo
+            - -port={{ .Values.containerPort }}
+            - -logLevel={{ .Values.logLevel }}
+          env:
+          - name: color
+            value: blue
+          {{- if .Values.blue.backend }}
+          - name: backendURL
+            value: {{ .Values.blue.backend }}
+          {{- end }}
+          {{- if .Values.blue.message }}
+          - name: message
+            value: {{ .Values.blue.message }}
+          {{- end }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.containerPort }}
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /readyz
+              port: 9898
+            initialDelaySeconds: 1
+            periodSeconds: 2
+            failureThreshold: 1
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 9898
+            initialDelaySeconds: 1
+            periodSeconds: 10
+            failureThreshold: 2
+          volumeMounts:
+          - name: data
+            mountPath: /data
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+      volumes:
+      - name: data
+        emptyDir: {}

charts/podinfo-istio/templates/destionation-rule.yaml

@@ -0,0 +1,20 @@
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: {{ template "podinfo-istio.fullname" . }}
+  labels:
+    app: {{ template "podinfo-istio.fullname" . }}
+    chart: {{ template "podinfo-istio.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  host: {{ template "podinfo-istio.fullname" . }}
+  subsets:
+  - name: blue
+    labels:
+      color: blue
+  {{- if gt .Values.green.replicas 0.0 }}
+  - name: green
+    labels:
+      color: green
+  {{- end }}

charts/podinfo-istio/templates/external-services.yaml

@@ -0,0 +1,22 @@
+{{- if .Values.externalServices -}}
+apiVersion: networking.istio.io/v1alpha3
+kind: ServiceEntry
+metadata:
+  name: {{ template "podinfo-istio.fullname" . }}-external-svcs
+  labels:
+    app: {{ template "podinfo-istio.fullname" . }}
+    chart: {{ template "podinfo-istio.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  hosts:
+  {{- range .Values.externalServices }}
+  - {{ . }}
+  {{- end }}
+  location: MESH_EXTERNAL
+  ports:
+  - number: 443
+    name: https
+    protocol: HTTPS
+  resolution: DNS
+{{- end }}

charts/podinfo-istio/templates/gateway.yaml

@@ -0,0 +1,31 @@
+{{- if .Values.gateway.create -}}
+apiVersion: networking.istio.io/v1alpha3
+kind: Gateway
+metadata:
+  name: {{ .Values.gateway.name }}
+  namespace: istio-system
+spec:
+  selector:
+    istio: ingressgateway
+  servers:
+  - port:
+      number: 80
+      name: http
+      protocol: HTTP
+    hosts:
+    - "*"
+    tls:
+      httpsRedirect: {{ .Values.gateway.httpsRedirect }}
+  {{- if .Values.gateway.tls }}
+  - port:
+      number: 443
+      name: https
+      protocol: HTTPS
+    hosts:
+    - "*"
+    tls:
+      mode: SIMPLE
+      privateKey: /etc/istio/ingressgateway-certs/tls.key
+      serverCertificate: /etc/istio/ingressgateway-certs/tls.crt
+  {{- end }}
+{{- end }}

charts/podinfo-istio/templates/green-deployment.yaml

@@ -0,0 +1,78 @@
+{{- if gt .Values.green.replicas 0.0 -}}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ template "podinfo-istio.green" . }}
+  labels:
+    app: {{ template "podinfo-istio.fullname" . }}
+    chart: {{ template "podinfo-istio.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+    color: green
+    version: {{ .Values.green.tag }}
+spec:
+  replicas: {{ .Values.green.replicas }}
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+      app: {{ template "podinfo-istio.fullname" . }}
+      color: green
+  template:
+    metadata:
+      labels:
+        app: {{ template "podinfo-istio.fullname" . }}
+        color: green
+        version: {{ .Values.green.tag }}
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+        - name: podinfod
+          image: "{{ .Values.green.repository }}:{{ .Values.green.tag }}"
+          imagePullPolicy: {{ .Values.imagePullPolicy }}
+          command:
+            - ./podinfo
+            - -port={{ .Values.containerPort }}
+            - -logLevel={{ .Values.logLevel }}
+          env:
+          - name: color
+            value: green
+          {{- if .Values.green.backend }}
+          - name: backendURL
+            value: {{ .Values.green.backend }}
+          {{- end }}
+          {{- if .Values.green.message }}
+          - name: message
+            value: {{ .Values.green.message }}
+          {{- end }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.containerPort }}
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /readyz
+              port: 9898
+            initialDelaySeconds: 1
+            periodSeconds: 2
+            failureThreshold: 1
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 9898
+            initialDelaySeconds: 1
+            periodSeconds: 10
+            failureThreshold: 2
+          volumeMounts:
+          - name: data
+            mountPath: /data
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+      volumes:
+      - name: data
+        emptyDir: {}
+{{- end }}

charts/podinfo-istio/templates/service.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "podinfo-istio.fullname" . }}
+  labels:
+    app: {{ template "podinfo-istio.fullname" . }}
+    chart: {{ template "podinfo-istio.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  type: ClusterIP
+  ports:
+    - port: {{ .Values.containerPort }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: {{ template "podinfo-istio.fullname" . }}

charts/podinfo-istio/templates/virtual-service.yaml

@@ -0,0 +1,43 @@
+{{- $host := .Release.Name -}}
+{{- $timeout := .Values.timeout -}}
+{{- $greenWeight := (sub 100 (.Values.blue.weight|int)) | int -}}
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: {{ template "podinfo-istio.fullname" . }}
+  labels:
+    app: {{ template "podinfo-istio.fullname" . }}
+    chart: {{ template "podinfo-istio.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  hosts:
+  - {{ .Values.host }}
+{{- if .Values.exposeHost }}
+  gateways:
+  - {{ .Values.gateway.name }}.istio-system.svc.cluster.local
+{{- end }}
+  http:
+  {{- if gt .Values.green.replicas 0.0 }}
+  {{- range .Values.green.routing }}
+  - match:
+{{ toYaml .match | indent 6 }}
+    route:
+     - destination:
+        host: {{ $host }}
+        subset: green
+    timeout: {{ $timeout }}
+  {{- end }}
+  {{- end }}
+  - route:
+    - destination:
+        host: {{ template "podinfo-istio.fullname" . }}
+        subset: blue
+      weight: {{ .Values.blue.weight }}
+    {{- if gt .Values.green.replicas 0.0 }}
+    - destination:
+        host: {{ template "podinfo-istio.fullname" . }}
+        subset: green
+      weight: {{ $greenWeight }}
+    {{- end }}
+    timeout: {{ $timeout }}

charts/podinfo-istio/values.yaml

@@ -0,0 +1,55 @@
+# Default values for podinfo-istio.
+
+# host can be an extarnal domain or a local one
+host: podinfo
+# if the host is an external domain must be exposed via the Gateway
+exposeHost: false
+timeout: 30s
+
+# creates public-gateway.istio-system.svc.cluster.local
+# no more than one Gateway can be created on a cluster
+# if TLS is enabled the istio-ingressgateway-certs secret must exist in istio-system ns
+# if you have a Gateway running you can set the name to your own gateway and turn off create
+gateway:
+  name: public-gateway
+  create: false
+  tls: false
+  httpsRedirect: false
+
+# authorise external https services
+#externalServices:
+#  - api.github.com
+#  - apis.google.com
+#  - googleapis.com
+
+# stable release
+# by default all traffic goes to blue
+blue:
+  replicas: 2
+  repository: quay.io/stefanprodan/podinfo
+  tag: "0.6.0"
+  # green must have at at least one replica to set weight under 100
+  weight: 100
+  message:
+  backend:
+
+
+# canary release
+# disabled with 0 replicas
+green:
+  replicas: 0
+  repository: quay.io/stefanprodan/podinfo
+  tag: "0.6.1"
+  message:
+  backend:
+  routing:
+
+# blue/green common settings
+logLevel: info
+containerPort: 9898
+imagePullPolicy: IfNotPresent
+resources:
+  limits:
+  requests:
+    cpu: 1m
+    memory: 16Mi

charts/podinfo/Chart.yaml

@@ -1,8 +1,8 @@
 apiVersion: v1
-appVersion: "0.5.0"
+appVersion: "0.6.0"
 description: Podinfo Helm chart for Kubernetes
 name: podinfo
-version: 0.2.0
+version: 0.2.2
 home: https://github.com/stefanprodan/k8s-podinfo
 sources:
 - https://github.com/stefanprodan/k8s-podinfo

charts/podinfo/templates/deployment.yaml

@@ -7,20 +7,31 @@ metadata:
     chart: {{ template "podinfo.chart" . }}
     release: {{ .Release.Name }}
     heritage: {{ .Release.Service }}
+    color: {{ .Values.color }}
+    version: {{ .Values.image.tag }}
 spec:
   replicas: {{ .Values.replicaCount }}
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
   selector:
     matchLabels:
       app: {{ template "podinfo.name" . }}
+      color: {{ .Values.color }}
+      version: {{ .Values.image.tag }}
       release: {{ .Release.Name }}
   template:
     metadata:
       labels:
         app: {{ template "podinfo.name" . }}
+        color: {{ .Values.color }}
+        version: {{ .Values.image.tag }}
         release: {{ .Release.Name }}
       annotations:
         prometheus.io/scrape: 'true'
     spec:
+      terminationGracePeriodSeconds: 30
       containers:
         - name: {{ .Chart.Name }}
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
@@ -30,20 +41,30 @@ spec:
             - -port={{ .Values.service.containerPort }}
             - -logLevel={{ .Values.logLevel }}
           env:
-          - name: backend_url
+          - name: color
+            value: {{ .Values.color }}
+          {{- if .Values.backend }}
+          - name: backendURL
             value: {{ .Values.backend }}
+          {{- end }}
           ports:
             - name: http
               containerPort: {{ .Values.service.containerPort }}
               protocol: TCP
-          livenessProbe:
-            httpGet:
-              path: /healthz
-              port: http
           readinessProbe:
             httpGet:
               path: /readyz
-              port: http
+              port: 9898
+            initialDelaySeconds: 1
+            periodSeconds: 2
+            failureThreshold: 1
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 9898
+            initialDelaySeconds: 1
+            periodSeconds: 10
+            failureThreshold: 2
           volumeMounts:
           - name: data
             mountPath: /data

charts/podinfo/values.yaml

@@ -1,11 +1,12 @@
 # Default values for podinfo.
 
-replicaCount: 1
-backend: http://backend-podinfo:9898/echo
+replicaCount: 2
+color: blue
+backend: #http://backend-podinfo:9898/echo
 
 image:
-  repository: stefanprodan/podinfo
-  tag: 0.4.0
+  repository: quay.io/stefanprodan/podinfo
+  tag: 0.6.0
   pullPolicy: IfNotPresent
 
 service:
@@ -14,7 +15,7 @@ service:
   containerPort: 9898
   nodePort: 31198
 
-# Heapster or metrics-server add-on required
+# metrics-server add-on required
 hpa:
   enabled: false
   maxReplicas: 10
@@ -50,4 +51,4 @@ tolerations: []
 
 affinity: {}
 
-logLevel: debug
+logLevel: info

charts/weave-cloud/Chart.yaml

@@ -1,13 +0,0 @@
-apiVersion: v1
-appVersion: "1.0"
-description: Weave Cloud is a add-on to Kubernetes which provides Continuous Delivery, along with hosted Prometheus Monitoring and a visual dashboard for exploring & debugging microservices
-name: weave-cloud
-version: 0.2.0
-home: https://weave.works
-maintainers:
-  - name: Ilya Dmitrichenko
-    email: ilya@weave.works
-  - name: Stefan Prodan
-    email: stefan@weave.works
-engine: gotpl
-icon: https://www.weave.works/assets/images/bltd108e8f850ae9e7c/weave-logo-512.png

charts/weave-cloud/README.md

@@ -1,53 +0,0 @@
-# Weave Cloud Agents
-
-> ***NOTE: This chart is for Kubernetes version 1.6 and later.***
-
-Weave Cloud is a add-on to Kubernetes which provides Continuous Delivery, along with hosted Prometheus Monitoring and a visual dashboard for exploring & debugging microservices.
-
-This package contains the agents which connect your cluster to Weave Cloud.
-
-_To learn more and sign up please visit [Weaveworks website](https://weave.works)._
-
-You will need a service token which you can get from [cloud.weave.works](https://cloud.weave.works/).
-
-## Installing the Chart
-
-To install the chart:
-
-```console
-$ helm install --name weave-cloud --namespace weave --set token=<YOUR_WEAVE_CLOUD_SERVICE_TOKEN> stable/weave-cloud
-```
-
-To view the pods installed:
-```console
-$ kubectl get pods -n weave -l weave-cloud-component
-```
-
-To upgrade the chart:
-```console
-$ helm upgrade --reuse-values weave-cloud stable/weave-cloud
-```
-
-## Uninstalling the Chart
-
-To uninstall/delete the `weave-cloud` chart:
-
-```console
-$ helm delete --purge weave-cloud
-```
-
-Delete the `weave` namespace:
-
-```console
-$ kubectl delete namespace weave
-```
-
-The command removes all the Kubernetes components associated with the chart and deletes the release.
-
-## Configuration
-
-The following tables lists the configurable parameters of the Weave Cloud Agents chart and their default values.
-
-| Parameter | Description | Default |
-| --------- | ----------- | ------- |
-| `token` | Weave Cloud service token | _none_ _(**must be set**)_ |

charts/weave-cloud/templates/NOTES.txt

@@ -1,28 +0,0 @@
-{{- if .Values.token -}}
-
-Weave Cloud agents had been installed!
-
-First, verify all Pods are running:
-
-  kubectl get pods -n {{ .Release.Namespace }}
-
-Next, login to Weave Cloud (https://cloud.weave.works) and verify the agents are connect to your instance.
-
-If you need help or have any question, join our Slack to chat to us – https://slack.weave.works.
-
-Happy hacking!
-
-{{- else -}}
-#######################################################
-####  ERROR: Weave Cloud service token is missing  ####
-#######################################################
-
-The installation of Weave Cloud agents is incomplete until you set the service token.
-
-To retrieve your Weave Cloud service token, log in to your instance first: https://cloud.weave.works/instances
-
-Then run:
-
-  helm upgrade {{ .Release.Name }} --set token=<YOUR_WEAVE_CLOUD_SERVICE_TOKEN> stable/weave-cloud
-
-{{- end }}

charts/weave-cloud/templates/deployment.yaml

@@ -1,40 +0,0 @@
-apiVersion: apps/v1beta2
-kind: Deployment
-metadata:
-  name: {{ .Values.agent.name }}
-  labels:
-    app: {{ .Values.agent.name }}
-    chart: {{ template "weave-cloud.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  minReadySeconds: 30
-  replicas: 1
-  revisionHistoryLimit: 2
-  selector:
-    matchLabels:
-      app: {{ .Values.agent.name }}
-      release: {{ .Release.Name }}
-  template:
-    metadata:
-      labels:
-        app: {{ .Values.agent.name }}
-        release: {{ .Release.Name }}
-    spec:
-      serviceAccount: {{ .Values.agent.name }}
-      serviceAccountName: {{ .Values.agent.name }}
-      terminationGracePeriodSeconds: 30
-      containers:
-        - name: {{ .Values.agent.name }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
-          args:
-          - -agent.poll-url=https://get.weave.works/k8s/agent.yaml?instanceID={{"{{.InstanceID}}"}}
-          - -wc.hostname=cloud.weave.works
-          - -wc.token=$(WEAVE_CLOUD_TOKEN)
-          env:
-          - name: WEAVE_CLOUD_TOKEN
-            valueFrom:
-              secretKeyRef:
-                key: token
-                name: weave-cloud

charts/weave-cloud/templates/rbac.yaml

@@ -1,39 +0,0 @@
----
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: {{ .Values.agent.name }}
-  namespace: {{ .Release.Namespace }}
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRole
-metadata:
-  name: {{ .Values.agent.name }}
-  labels:
-    name: {{ .Values.agent.name }}
-rules:
-  - apiGroups:
-      - '*'
-    resources:
-      - '*'
-    verbs:
-      - '*'
-  - nonResourceURLs:
-      - '*'
-    verbs:
-      - '*'
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRoleBinding
-metadata:
-  name: {{ .Values.agent.name }}
-  labels:
-    name: {{ .Values.agent.name }}
-roleRef:
-  kind: ClusterRole
-  name: {{ .Values.agent.name }}
-  apiGroup: rbac.authorization.k8s.io
-subjects:
-  - kind: ServiceAccount
-    name: {{ .Values.agent.name }}
-    namespace: {{ .Release.Namespace }}

charts/weave-cloud/templates/secret.yaml

@@ -1,7 +0,0 @@
-apiVersion: v1
-kind: Secret
-type: Opaque
-metadata:
-  name: weave-cloud
-data:
-  token: {{ .Values.token | b64enc }}

charts/weave-cloud/values.yaml

@@ -1,12 +0,0 @@
-# Default values for weave-cloud.
-
-# token: ""
-
-agent:
-  name: weave-agent
-
-image:
-  repository: quay.io/weaveworks/launcher-agent
-  tag: master-b60524c
-  pullPolicy: IfNotPresent
-

charts/weave-flux/Chart.yaml

@@ -1,13 +0,0 @@
-apiVersion: v1
-appVersion: "1.3.0"
-description: Flux is a tool that automatically ensures that the state of a cluster matches what is specified in version control
-name: weave-flux
-version: 0.2.0
-home: https://weave.works
-sources:
-- https://github.com/weaveworks/flux
-maintainers:
-  - name: stefanprodan
-    email: stefan@weave.works
-engine: gotpl
-icon: https://landscape.cncf.io/logos/weave-flux.svg

charts/weave-flux/README.md

@@ -1,115 +0,0 @@
-# Weave Flux OSS
-
-Flux is a tool that automatically ensures that the state of a cluster matches what is specified in version control.
-It is most useful when used as a deployment tool at the end of a Continuous Delivery pipeline. Flux will make sure that your new container images and config changes are propagated to the cluster.
-
-## Introduction
-
-This chart bootstraps a [Weave Flux](https://github.com/weaveworks/flux) deployment on 
-a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
-
-## Prerequisites
-
-- Kubernetes 1.7+
-
-## Installing the Chart
-
-To install the chart with the release name `cd`:
-
-```console
-$ helm install --name cd \
---set git.url=git@github.com:weaveworks/flux-example \
---namespace flux \
-./charts/weave-flux
-```
-
-To install Flux with the Helm operator:
-
-```console
-$ helm install --name cd \
---set git.url=git@github.com:stefanprodan/weave-flux-helm-demo \
---set git.user="Stefan Prodan" \
---set git.email="stefan.prodan@gmail.com" \
---set helmOperator.create=true \
---namespace flux \
-./charts/weave-flux
-```
-
-Be aware that the Helm operator is alpha quality, DO NOT use it on a production cluster.
-
-The [configuration](#configuration) section lists the parameters that can be configured during installation.
-
-### Setup Git deploy 
-
-At startup Flux generates a SSH key and logs the public key. 
-Find the SSH public key with:
-
-```bash
-export FLUX_POD=$(kubectl get pods --namespace flux -l "app=weave-flux,release=cd" -o jsonpath="{.items[0].metadata.name}")
-kubectl -n flux logs $FLUX_POD | grep identity.pub | cut -d '"' -f2 | sed 's/.\{2\}$//'
-```
-
-In order to sync your cluster state with GitHub you need to copy the public key and 
-create a deploy key with write access on your GitHub repository.
-
-## Uninstalling the Chart
-
-To uninstall/delete the `cd` deployment:
-
-```console
-$ helm delete --purge cd
-```
-
-The command removes all the Kubernetes components associated with the chart and deletes the release. 
-You should also remove the deploy key from your GitHub repository.
-
-## Configuration
-
-The following tables lists the configurable parameters of the Weave Flux chart and their default values.
-
-| Parameter                       | Description                                | Default                                                    |
-| ------------------------------- | ------------------------------------------ | ---------------------------------------------------------- |
-| `image.repository` | Image repository | `quay.io/weaveworks/flux` 
-| `image.tag` | Image tag | `1.2.5` 
-| `image.pullPoliwell cy` | Image pull policy | `IfNotPresent` 
-| `resources` | CPU/memory resource requests/limits | None 
-| `rbac.create` | If `true`, create and use RBAC resources | `true`
-| `serviceAccount.create` | If `true`, create a new service account | `true`
-| `serviceAccount.name` | Service account to be used | `weave-flux`
-| `service.type` | Service type to be used | `ClusterIP`
-| `service.port` | Service port to be used | `3030`
-| `git.url` | URL of git repo with Kubernetes manifests | None
-| `git.branch` | Branch of git repo to use for Kubernetes manifests | `master`
-| `git.path` | Path within git repo to locate Kubernetes manifests (relative path) | None
-| `git.user` | Username to use as git committer | `Weave Flux`
-| `git.email` | Email to use as git committer | `support@weave.works`
-| `git.chartsPath` | Path within git repo to locate Helm charts (relative path) | `charts`
-| `git.pollInterval` | Period at which to poll git repo for new commits | `30s`
-| `helmOperator.create` | If `true`, install the Helm operator | `false`
-| `helmOperator.repository` | Helm operator image repository | `quay.io/weaveworks/helm-operator` 
-| `helmOperator.tag` | Helm operator image tag | `master-6f427cb` 
-| `helmOperator.pullPolicy` | Helm operator image pull policy | `IfNotPresent` 
-| `token` | Weave Cloud service token | None 
-
-Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example:
-
-```console
-$ helm upgrade --install --wait cd \
---set git.url=git@github.com:stefanprodan/podinfo \
---set git.path=deploy/auto-scaling \
---namespace flux \
-./charts/weave-flux
-```
-
-## Upgrade
-
-Update Weave Flux version with:
-
-```console
-helm upgrade --reuse-values cd \
---set image.tag=1.2.6 \
-./charts/weave-flux
-```
-
-
-

charts/weave-flux/templates/NOTES.txt

@@ -1,19 +0,0 @@
-1. Get the application URL by running these commands:
-{{- if contains "NodePort" .Values.service.type }}
-  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "weave-flux.fullname" . }})
-  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
-  echo http://$NODE_IP:$NODE_PORT
-{{- else if contains "LoadBalancer" .Values.service.type }}
-     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
-           You can watch the status of by running 'kubectl get svc -w {{ template "weave-flux.fullname" . }}'
-  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "weave-flux.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
-  echo http://$SERVICE_IP:{{ .Values.service.port }}
-{{- else if contains "ClusterIP" .Values.service.type }}
-  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "weave-flux.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
-  kubectl -n {{ .Release.Namespace }} port-forward $POD_NAME 8080:3030
-{{- end }}
-
-2. Get the Git deploy key by running these commands:
-  export FLUX_POD=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app={{ template "weave-flux.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
-  kubectl -n {{ .Release.Namespace }} logs $FLUX_POD | grep identity.pub | cut -d '"' -f2 | sed 's/.\{2\}$//'
-

charts/weave-flux/templates/deployment.yaml

@@ -1,75 +0,0 @@
-apiVersion: apps/v1beta2
-kind: Deployment
-metadata:
-  name: {{ template "weave-flux.fullname" . }}
-  labels:
-    app: {{ template "weave-flux.name" . }}
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  replicas: {{ .Values.replicaCount }}
-  selector:
-    matchLabels:
-      app: {{ template "weave-flux.name" . }}
-      release: {{ .Release.Name }}
-  template:
-    metadata:
-      labels:
-        app: {{ template "weave-flux.name" . }}
-        release: {{ .Release.Name }}
-    spec:
-      {{- if .Values.serviceAccount.create }}
-      serviceAccountName: {{ template "weave-flux.serviceAccountName" . }}
-      {{- end }}
-      volumes:
-      - name: git-key
-        secret:
-          secretName: {{ template "weave-flux.fullname" . }}-git-deploy
-          defaultMode: 0400
-      - name: git-keygen
-        emptyDir:
-          medium: Memory
-      containers:
-        - name: {{ .Chart.Name }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
-          ports:
-          - name: http
-            containerPort: 3030
-            protocol: TCP
-          volumeMounts:
-          - name: git-key
-            mountPath: /etc/fluxd/ssh
-            readOnly: true
-          - name: git-keygen
-            mountPath: /var/fluxd/keygen
-          args:
-          - --ssh-keygen-dir=/var/fluxd/keygen
-          - --k8s-secret-name={{ template "weave-flux.fullname" . }}-git-deploy
-          - --memcached-hostname={{ template "weave-flux.fullname" . }}-memcached
-          - --git-url={{ .Values.git.url }}
-          - --git-branch={{ .Values.git.branch }}
-          - --git-path={{ .Values.git.path }}
-          - --git-user={{ .Values.git.user }}
-          - --git-email={{ .Values.git.email }}
-          - --git-poll-interval={{ .Values.git.pollInterval }}
-          - --sync-interval={{ .Values.git.pollInterval }}
-          {{- if .Values.token }}
-          - --connect=wss://cloud.weave.works/api/flux
-          - --token={{ .Values.token }}
-          {{- end }}
-          resources:
-{{ toYaml .Values.resources | indent 12 }}
-    {{- with .Values.nodeSelector }}
-      nodeSelector:
-{{ toYaml . | indent 8 }}
-    {{- end }}
-    {{- with .Values.affinity }}
-      affinity:
-{{ toYaml . | indent 8 }}
-    {{- end }}
-    {{- with .Values.tolerations }}
-      tolerations:
-{{ toYaml . | indent 8 }}
-    {{- end }}

charts/weave-flux/templates/helm-operator-crd.yaml

@@ -1,19 +0,0 @@
-{{- if .Values.helmOperator.create -}}
-apiVersion: apiextensions.k8s.io/v1beta1
-kind: CustomResourceDefinition
-metadata:
-  name: fluxhelmreleases.helm.integrations.flux.weave.works
-  labels:
-    app: {{ template "weave-flux.name" . }}
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  group: helm.integrations.flux.weave.works
-  names:
-    kind: FluxHelmRelease
-    listKind: FluxHelmReleaseList
-    plural: fluxhelmreleases
-  scope: Namespaced
-  version: v1alpha2
-{{- end -}}

charts/weave-flux/templates/helm-operator-deployment.yaml

@@ -1,43 +0,0 @@
-{{- if .Values.helmOperator.create -}}
-apiVersion: apps/v1beta2
-kind: Deployment
-metadata:
-  name: {{ template "weave-flux.fullname" . }}-helm-operator
-  labels:
-    app: {{ template "weave-flux.name" . }}-helm-operator
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  replicas: {{ .Values.replicaCount }}
-  selector:
-    matchLabels:
-      app: {{ template "weave-flux.name" . }}-helm-operator
-      release: {{ .Release.Name }}
-  template:
-    metadata:
-      labels:
-        app: {{ template "weave-flux.name" . }}-helm-operator
-        release: {{ .Release.Name }}
-    spec:
-      {{- if .Values.serviceAccount.create }}
-      serviceAccountName: {{ template "weave-flux.serviceAccountName" . }}
-      {{- end }}
-      volumes:
-      - name: git-key
-        secret:
-          secretName: {{ template "weave-flux.fullname" . }}-git-deploy
-          defaultMode: 0400
-      containers:
-      - name: flux-helm-operator
-        image: "{{ .Values.helmOperator.repository }}:{{ .Values.helmOperator.tag }}"
-        imagePullPolicy: {{ .Values.helmOperator.pullPolicy }}
-        volumeMounts:
-        - name: git-key
-          mountPath: /etc/fluxd/ssh
-          readOnly: true
-        args:
-        - --git-url={{ .Values.git.url }}
-        - --git-branch={{ .Values.git.branch }}
-        - --git-charts-path={{ .Values.git.chartsPath }}
-{{- end -}}

charts/weave-flux/templates/memcached.yaml

@@ -1,54 +0,0 @@
-apiVersion: apps/v1beta2
-kind: Deployment
-metadata:
-  name: {{ template "weave-flux.fullname" . }}-memcached
-  labels:
-    app: {{ template "weave-flux.name" . }}-memcached
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  replicas: 1
-  strategy:
-    type: Recreate
-  selector:
-    matchLabels:
-      app: {{ template "weave-flux.name" . }}-memcached
-      release: {{ .Release.Name }}
-  template:
-    metadata:
-      labels:
-        app: {{ template "weave-flux.name" . }}-memcached
-        release: {{ .Release.Name }}
-    spec:
-      containers:
-      - name: memcached
-        image: memcached:1.4.25
-        imagePullPolicy: IfNotPresent
-        args:
-        - -m 64    # Maximum memory to use, in megabytes. 64MB is default.
-        - -p 11211    # Default port, but being explicit is nice.
-        - -vv    # This gets us to the level of request logs.
-        ports:
-        - name: memcached
-          containerPort: 11211
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: {{ template "weave-flux.fullname" . }}-memcached
-  labels:
-    app: {{ template "weave-flux.name" . }}-memcached
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  clusterIP: None
-  ports:
-    - port: 11211
-      targetPort: memcached
-      protocol: TCP
-      name: memcached
-  selector:
-    app: {{ template "weave-flux.name" . }}-memcached
-    release: {{ .Release.Name }}

charts/weave-flux/templates/rbac.yaml

@@ -1,40 +0,0 @@
-{{- if .Values.rbac.create -}}
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRole
-metadata:
-  name: {{ template "weave-flux.fullname" . }}
-  labels:
-    app: {{ template "weave-flux.name" . }}
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-rules:
-  - apiGroups:
-      - '*'
-    resources:
-      - '*'
-    verbs:
-      - '*'
-  - nonResourceURLs:
-      - '*'
-    verbs:
-      - '*'
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRoleBinding
-metadata:
-  name: {{ template "weave-flux.fullname" . }}
-  labels:
-    app: {{ template "weave-flux.name" . }}
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: {{ template "weave-flux.fullname" . }}
-subjects:
-  - name: {{ template "weave-flux.serviceAccountName" . }}
-    namespace: {{ .Release.Namespace | quote }}
-    kind: ServiceAccount
-{{- end -}}

charts/weave-flux/templates/secret.yaml

@@ -1,5 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: {{ template "weave-flux.fullname" . }}-git-deploy
-type: Opaque

charts/weave-flux/templates/service.yaml

@@ -1,19 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: {{ template "weave-flux.fullname" . }}
-  labels:
-    app: {{ template "weave-flux.name" . }}
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-spec:
-  type: {{ .Values.service.type }}
-  ports:
-    - port: {{ .Values.service.port }}
-      targetPort: http
-      protocol: TCP
-      name: http
-  selector:
-    app: {{ template "weave-flux.name" . }}
-    release: {{ .Release.Name }}

charts/weave-flux/templates/serviceaccount.yaml

@@ -1,11 +0,0 @@
-{{- if .Values.serviceAccount.create -}}
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: {{ template "weave-flux.serviceAccountName" . }}
-  labels:
-    app: {{ template "weave-flux.name" . }}
-    chart: {{ template "weave-flux.chart" . }}
-    release: {{ .Release.Name }}
-    heritage: {{ .Release.Service }}
-{{- end -}}

charts/weave-flux/values.yaml

@@ -1,64 +0,0 @@
-# Default values for weave-flux.
-
-# Weave Cloud service token
-token: ""
-
-replicaCount: 1
-
-image:
-  repository: quay.io/weaveworks/flux
-  tag: 1.3.0
-  pullPolicy: IfNotPresent
-
-service:
-  type: ClusterIP
-  port: 3030
-
-helmOperator:
-  create: false
-  repository: quay.io/weaveworks/helm-operator
-  tag: 0.1.0-alpha
-  pullPolicy: IfNotPresent
-
-rbac:
-  # Specifies whether RBAC resources should be created
-  create: true
-
-serviceAccount:
-  # Specifies whether a service account should be created
-  create: true
-  # The name of the service account to use.
-  # If not set and create is true, a name is generated using the fullname template
-  name:
-
-resources: {}
-  # If you do want to specify resources, uncomment the following
-  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
-  # limits:
-  #  cpu: 100m
-  #  memory: 128Mi
-  # requests:
-  #  cpu: 100m
-  #  memory: 128Mi
-
-nodeSelector: {}
-
-tolerations: []
-
-affinity: {}
-
-git:
-  # URL of git repo with Kubernetes manifests; e.g. git@github.com:weaveworks/flux-example
-  url: ""
-  # Branch of git repo to use for Kubernetes manifests
-  branch: "master"
-  # Path within git repo to locate Kubernetes manifests (relative path)
-  path: ""
-  # Username to use as git committer
-  user: "Weave Flux"
-  # Email to use as git committer
-  email: "support@weave.works"
-  # Path within git repo to locate Helm charts (relative path)
-  chartsPath: "charts"
-  # Period at which to poll git repo for new commits
-  pollInterval: "30s"

cmd/podinfo/main.go

@@ -2,7 +2,9 @@ package main
 
 import (
 	"flag"
+	"io/ioutil"
 	stdlog "log"
+	"os"
 	"time"
 
 	"github.com/rs/zerolog"
@@ -13,15 +15,20 @@ import (
 )
 
 var (
-	port     string
-	debug    bool
-	logLevel string
+	port                string
+	debug               bool
+	logLevel            string
+	stressCPU           int
+	stressMemory        int
+	stressMemoryPayload []byte
 )
 
 func init() {
 	flag.StringVar(&port, "port", "9898", "Port to listen on.")
 	flag.BoolVar(&debug, "debug", false, "sets log level to debug")
 	flag.StringVar(&logLevel, "logLevel", "debug", "sets log level as debug, info, warn, error, flat or panic ")
+	flag.IntVar(&stressCPU, "stressCPU", 0, "Number of CPU cores with 100% load")
+	flag.IntVar(&stressMemory, "stressMemory", 0, "MB of data to load into memory")
 }
 
 func main() {
@@ -32,6 +39,7 @@ func main() {
 	log.Debug().Msgf("Starting HTTP server on port %v", port)
 
 	stopCh := signals.SetupSignalHandler()
+	beginStressTest(stressCPU, stressMemory)
 	server.ListenAndServe(port, 5*time.Second, stopCh)
 }
 
@@ -64,3 +72,43 @@ func setLogging() {
 	stdlog.SetFlags(0)
 	stdlog.SetOutput(log.Logger)
 }
+
+func beginStressTest(cpus int, mem int) {
+	done := make(chan int)
+	if cpus > 0 {
+		log.Info().Msgf("Starting CPU stress, %v core(s)", cpus)
+		for i := 0; i < cpus; i++ {
+			go func() {
+				for {
+					select {
+					case <-done:
+						return
+					default:
+
+					}
+				}
+			}()
+		}
+	}
+
+	if mem > 0 {
+		path := "/tmp/podinfo.data"
+		f, err := os.Create(path)
+
+		if err != nil {
+			log.Error().Err(err).Msgf("Memory stress failed")
+		}
+
+		if err := f.Truncate(1000000 * int64(mem)); err != nil {
+			log.Error().Err(err).Msgf("Memory stress failed")
+		}
+
+		stressMemoryPayload, err = ioutil.ReadFile(path)
+		f.Close()
+		os.Remove(path)
+		if err != nil {
+			log.Error().Err(err).Msgf("Memory stress failed")
+		}
+		log.Info().Msgf("Starting memory stress, size %v", len(stressMemoryPayload))
+	}
+}

deploy/istio-system/gateway.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: Gateway
+metadata:
+  name: public-gateway
+  namespace: istio-system
+spec:
+  selector:
+    istio: ingressgateway
+  servers:
+  - port:
+      number: 80
+      name: http
+      protocol: HTTP
+    hosts:
+    - "*"
+    tls:
+      httpsRedirect: true
+  - port:
+      number: 443
+      name: https
+      protocol: HTTPS
+    hosts:
+    - "*"
+    tls:
+      mode: SIMPLE
+      privateKey: /etc/istio/ingressgateway-certs/tls.key
+      serverCertificate: /etc/istio/ingressgateway-certs/tls.crt

deploy/istio-system/grafana-virtual-service.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: grafana
+  namespace: istio-system
+spec:
+  hosts:
+  - "grafana.istio.weavedx.com"
+  gateways:
+  - public-gateway.istio-system.svc.cluster.local
+  http:
+  - route:
+    - destination:
+        host: grafana
+    timeout: 30s
+

deploy/istio-system/grafanax-virtual-service.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: grafanax
+  namespace: istio-system
+spec:
+  hosts:
+  - "grafanax.istio.weavedx.com"
+  gateways:
+  - public-gateway.istio-system.svc.cluster.local
+  http:
+  - route:
+    - destination:
+        host: grafanax
+    timeout: 30s
+

deploy/istio-system/jaeger-virtual-service.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: jaeger
+  namespace: istio-system
+spec:
+  hosts:
+  - "jaeger.istio.weavedx.com"
+  gateways:
+  - public-gateway.istio-system.svc.cluster.local
+  http:
+  - route:
+    - destination:
+        host: jaeger-query
+    timeout: 30s
+

deploy/istio/backend-destination-rule.yaml

@@ -0,0 +1,14 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: podinfo-backend
+spec:
+  host: podinfo-backend
+  subsets:
+  - name: grey
+    labels:
+      color: grey
+  - name: orange
+    labels:
+      color: orange

deploy/istio/backend-grey-dep.yaml

@@ -0,0 +1,64 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo-backend-grey
+  labels:
+    app: podinfo-backend
+    color: grey
+spec:
+  replicas: 3
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+     app: podinfo-backend
+     color: grey
+  template:
+    metadata:
+      labels:
+        app: podinfo-backend
+        color: grey
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+      - name: podinfod
+        image: quay.io/stefanprodan/podinfo:0.6.0
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - /bin/sh
+              - -c
+              - sleep 3
+        command:
+          - ./podinfo
+          - -port=9898
+          - -logLevel=debug
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        readinessProbe:
+          httpGet:
+            path: /readyz
+            port: 9898
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 9898
+        resources:
+          requests:
+            memory: "32Mi"
+            cpu: "10m"
+        env:
+          - name: color
+            value: "grey"
+          - name: message
+            value: "Greetings from backend grey"
+          - name: backendURL
+            value: "http://podinfo-store:9898/echo" #"https://httpbin.org/anything"

deploy/istio/backend-orange-dep.yaml

@@ -0,0 +1,64 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo-backend-orange
+  labels:
+    app: podinfo-backend
+    color: orange
+spec:
+  replicas: 3
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+     app: podinfo-backend
+     color: orange
+  template:
+    metadata:
+      labels:
+        app: podinfo-backend
+        color: orange
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+      - name: podinfod
+        image: quay.io/stefanprodan/podinfo:0.6.0
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - /bin/sh
+              - -c
+              - sleep 3
+        command:
+          - ./podinfo
+          - -port=9898
+          - -logLevel=debug
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        readinessProbe:
+          httpGet:
+            path: /readyz
+            port: 9898
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 9898
+        resources:
+          requests:
+            memory: "32Mi"
+            cpu: "10m"
+        env:
+          - name: color
+            value: "orange"
+          - name: message
+            value: "Greetings from backend orange"
+          - name: backendURL
+            value: "http://podinfo-store:9898/echo" #"https://httpbin.org/anything"

deploy/istio/backend-svc.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: podinfo-backend
+  labels:
+    app: podinfo-backend
+spec:
+  type: ClusterIP
+  ports:
+    - port: 9898
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: podinfo-backend

deploy/istio/backend-virtual-service.yaml

@@ -0,0 +1,29 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: podinfo-backend
+spec:
+  hosts:
+  - podinfo-backend
+  http:
+  # new version
+  # forward 100% of the traffic to orange
+  - match:
+#    - headers:
+#        x-api-version:
+#          regex: "^(v{0,1})0\\.6\\.([0-9]{1,3}).*"
+    - sourceLabels:
+        color: blue
+    route:
+    - destination:
+        host: podinfo-backend
+        subset: orange
+    timeout: 20s
+  # default route
+  # forward 100% of the traffic to grey
+  - route:
+    - destination:
+        host: podinfo-backend
+        subset: grey
+    timeout: 20s

deploy/istio/blue-dep.yaml

@@ -0,0 +1,65 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo-blue
+  labels:
+    app: podinfo
+    color: blue
+spec:
+  replicas: 3
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+     app: podinfo
+     color: blue
+  template:
+    metadata:
+      labels:
+        app: podinfo
+        color: blue
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+      - name: podinfod
+        image: quay.io/stefanprodan/podinfo:0.6.0
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - /bin/sh
+              - -c
+              - sleep 3
+        command:
+          - ./podinfo
+          - -port=9898
+          - -logLevel=debug
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        readinessProbe:
+          httpGet:
+            path: /readyz
+            port: 9898
+          initialDelaySeconds: 10
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 9898
+        resources:
+          requests:
+            memory: "32Mi"
+            cpu: "10m"
+        env:
+          - name: color
+            value: "blue"
+          - name: message
+            value: "Greetings from podinfo blue"
+          - name: backendURL
+            value: "http://podinfo-backend:9898/backend"

deploy/istio/frontend-destination-rule.yaml

@@ -0,0 +1,14 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: podinfo
+spec:
+  host: podinfo
+  subsets:
+  - name: blue
+    labels:
+      color: blue
+  - name: green
+    labels:
+      color: green

deploy/istio/frontend-svc.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: podinfo
+  labels:
+    app: podinfo
+spec:
+  type: ClusterIP
+  ports:
+    - port: 9898
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: podinfo

deploy/istio/frontend-virtual-service.yaml

@@ -0,0 +1,82 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: podinfo
+spec:
+  hosts:
+  - "podinfo.istio.weavedx.com"
+  gateways:
+  - public-gateway.istio-system.svc.cluster.local
+  http:
+  # Opera: forward 100% of the traffic to green
+  - match:
+    - headers:
+        user-agent:
+          regex: ".*OPR.*"
+    route:
+     - destination:
+        host: podinfo
+        subset: green
+    timeout: 30s
+  # Chrome: 50/50 load balancing between blue and green
+  - match:
+    - headers:
+        user-agent:
+          regex: ".*Chrome.*"
+    route:
+     - destination:
+        host: podinfo
+        subset: blue
+       weight: 50
+     - destination:
+        host: podinfo
+        subset: green
+       weight: 50
+    timeout: 30s
+  # Safari: 70/30 load balancing between blue and green
+  - match:
+    - headers:
+        user-agent:
+          regex: "^(?!.*Chrome).*Safari.*"
+    route:
+     - destination:
+        host: podinfo
+        subset: blue
+       weight: 100
+     - destination:
+        host: podinfo
+        subset: green
+       weight: 0
+    timeout: 30s
+  # Route based on color header
+  - match:
+    - headers:
+        x-color:
+          exact: "blue"
+    route:
+     - destination:
+        host: podinfo
+        subset: blue
+    timeout: 30s
+    retries:
+      attempts: 3
+      perTryTimeout: 3s
+  - match:
+    - headers:
+        x-color:
+          exact: "green"
+    route:
+     - destination:
+        host: podinfo
+        subset: green
+    timeout: 30s
+    retries:
+      attempts: 3
+      perTryTimeout: 3s
+  # Any other browser: forward 100% of the traffic to blue
+  - route:
+    - destination:
+        host: podinfo
+        subset: blue
+    timeout: 35s

deploy/istio/green-dep.yaml

@@ -0,0 +1,68 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo-green
+  labels:
+    app: podinfo
+    color: green
+spec:
+  replicas: 3
+  minReadySeconds: 15
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+     app: podinfo
+     color: green
+  template:
+    metadata:
+      labels:
+        app: podinfo
+        color: green
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+      - name: podinfod
+        image: quay.io/stefanprodan/podinfo:0.6.0
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - /bin/sh
+              - -c
+              - sleep 4
+        command:
+          - ./podinfo
+          - -port=9898
+          - -logLevel=debug
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        readinessProbe:
+          httpGet:
+            path: /readyz
+            port: 9898
+          initialDelaySeconds: 1
+          periodSeconds: 2
+          failureThreshold: 1
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 9898
+        resources:
+          requests:
+            memory: "32Mi"
+            cpu: "10m"
+        env:
+          - name: color
+            value: "green"
+          - name: message
+            value: "Greetings from podinfo green"
+          - name: backendURL
+            value: "http://podinfo-backend:9898/backend"

deploy/istio/httpbin-service-entry.yaml

@@ -0,0 +1,15 @@
+apiVersion: networking.istio.io/v1alpha3
+kind: ServiceEntry
+metadata:
+  name: httpbin
+spec:
+  hosts:
+  - httpbin.org
+  ports:
+  - number: 80
+    name: http
+    protocol: HTTP
+  - number: 443
+    name: https
+    protocol: HTTPS
+  resolution: DNS

deploy/istio/store-dep.yaml

@@ -0,0 +1,62 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: podinfo-store
+  labels:
+    app: podinfo-store
+    version: "0.6"
+spec:
+  replicas: 3
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+  selector:
+    matchLabels:
+     app: podinfo-store
+     version: "0.6"
+  template:
+    metadata:
+      labels:
+        app: podinfo-store
+        version: "0.6"
+      annotations:
+        prometheus.io/scrape: 'true'
+    spec:
+      terminationGracePeriodSeconds: 30
+      containers:
+      - name: podinfod
+        image: quay.io/stefanprodan/podinfo:0.6.0
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - /bin/sh
+              - -c
+              - sleep 3
+        command:
+          - ./podinfo
+          - -port=9898
+          - -logLevel=debug
+        ports:
+        - name: http
+          containerPort: 9898
+          protocol: TCP
+        readinessProbe:
+          httpGet:
+            path: /readyz
+            port: 9898
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 9898
+        resources:
+          requests:
+            memory: "32Mi"
+            cpu: "10m"
+        env:
+          - name: color
+            value: "yellow"
+          - name: message
+            value: "Greetings from store yellow"

deploy/istio/store-svc.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: podinfo-store
+  labels:
+    app: podinfo-store
+spec:
+  type: ClusterIP
+  ports:
+    - port: 9898
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: podinfo-store

deploy/istio/store-virtual-service.yaml

@@ -0,0 +1,27 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: podinfo-store
+spec:
+  hosts:
+  - podinfo-store
+  http:
+  - match:
+    - sourceLabels:
+        color: orange
+    route:
+    - destination:
+        host: podinfo-store
+    timeout: 15s
+    fault:
+      delay:
+        percent: 50
+        fixedDelay: 500ms
+      abort:
+        percent: 50
+        httpStatus: 500
+  - route:
+    - destination:
+        host: podinfo-store
+    timeout: 15s

deploy/skaffold/test/basic-auth.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+data:
+  basic_auth_password: ODM4NzIwYTUxMjgxNDlkMzJmMTIxYTViMWQ4N2FjMzUwNzAxZThmZQ==
+  basic_auth_test: YWRtaW4=
+kind: Secret
+metadata:
+  name: basic-auth
+type: Opaque

deploy/skaffold/test/deployment.yaml

@@ -6,7 +6,13 @@ metadata:
   labels:
     app: podinfo
 spec:
-  replicas: 1
+  replicas: 3
+  minReadySeconds: 15
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 1
+      maxSurge: 1
   selector:
     matchLabels:
      app: podinfo
@@ -17,13 +23,21 @@ spec:
       annotations:
         prometheus.io/scrape: 'true'
     spec:
+      terminationGracePeriodSeconds: 30
       containers:
       - name: podinfod
-        image: quay.io/stefanprodan/podinfo:0.5.0-alpha6
+        image: quay.io/stefanprodan/podinfo:0.6.0
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - /bin/sh
+              - -c
+              - sleep 3
         command:
           - ./podinfo
           - -port=9898
-          - -debug=true
+          - -logLevel=debug
         ports:
         - name: http
           containerPort: 9898
@@ -33,7 +47,7 @@ spec:
             path: /readyz
             port: 9898
           initialDelaySeconds: 1
-          periodSeconds: 5
+          periodSeconds: 2
           failureThreshold: 1
         livenessProbe:
           httpGet:
@@ -47,6 +61,12 @@ spec:
             memory: "32Mi"
             cpu: "10m"
         env:
+          - name: color
+            value: "blue"
+          - name: message
+            value: "Greetings from podinfo blue"
+          - name: backendURL
+            value: "http://podinfo-backend:9898/echo"
           - name: configPath
             value: "/var/secrets"
         volumeMounts:

deploy/skaffold/test/service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: podinfo
+  labels:
+    app: podinfo
+spec:
+  type: LoadBalancer
+  ports:
+    - port: 9898
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: podinfo

docs/index.yaml

@@ -3,7 +3,7 @@ entries:
   ambassador:
   - apiVersion: v1
     appVersion: 0.29.0
-    created: 2018-08-04T02:00:00.9435927+03:00
+    created: 2018-08-17T18:44:47.405027259+03:00
     description: A Helm chart for Datawire Ambassador
     digest: a30c8cb38e696b09fda8269ad8465ce6fec6100cfc108ca85ecbc85913ca5c7f
     engine: gotpl
@@ -19,17 +19,27 @@ entries:
   grafana:
   - apiVersion: v1
     appVersion: "1.0"
-    created: 2018-08-04T02:00:00.944250297+03:00
+    created: 2018-08-17T18:44:47.405800273+03:00
     description: A Helm chart for Kubernetes
     digest: abdcadc5cddcb7c015aa5bb64e59bfa246774ad9243b3eb3c2a814abb38f2776
     name: grafana
     urls:
     - https://stefanprodan.github.io/k8s-podinfo/grafana-0.1.0.tgz
     version: 0.1.0
+  loadtest:
+  - apiVersion: v1
+    appVersion: "1.0"
+    created: 2018-08-17T18:44:47.406037468+03:00
+    description: Hey load test Helm chart for Kubernetes
+    digest: fd3c3cd1eafa9d496250356aa52de1430f3467535fc2972eba5c5c392714eb1f
+    name: loadtest
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/loadtest-0.1.0.tgz
+    version: 0.1.0
   ngrok:
   - apiVersion: v1
     appVersion: "1.0"
-    created: 2018-08-04T02:00:00.944555634+03:00
+    created: 2018-08-17T18:44:47.406355266+03:00
     description: A Ngrok Helm chart for Kubernetes
     digest: 7bf5ed2ef63ccd5efb76bcd9a086b04816a162c51d6ab592bccf58c283acd2ea
     name: ngrok
@@ -37,9 +47,41 @@ entries:
     - https://stefanprodan.github.io/k8s-podinfo/ngrok-0.1.0.tgz
     version: 0.1.0
   podinfo:
+  - apiVersion: v1
+    appVersion: 0.6.0
+    created: 2018-08-17T18:44:47.410049875+03:00
+    description: Podinfo Helm chart for Kubernetes
+    digest: bd25a710eddb3985d3bd921a11022b5c68a04d37cf93a1a4aab17eeda35aa2f8
+    engine: gotpl
+    home: https://github.com/stefanprodan/k8s-podinfo
+    maintainers:
+    - email: stefanprodan@users.noreply.github.com
+      name: stefanprodan
+    name: podinfo
+    sources:
+    - https://github.com/stefanprodan/k8s-podinfo
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-0.2.2.tgz
+    version: 0.2.2
+  - apiVersion: v1
+    appVersion: 0.5.1
+    created: 2018-08-17T18:44:47.409648714+03:00
+    description: Podinfo Helm chart for Kubernetes
+    digest: 631ca3e2db5553541a50b625f538e6a1f2a103c13aa8148fdd38baf2519e5235
+    engine: gotpl
+    home: https://github.com/stefanprodan/k8s-podinfo
+    maintainers:
+    - email: stefanprodan@users.noreply.github.com
+      name: stefanprodan
+    name: podinfo
+    sources:
+    - https://github.com/stefanprodan/k8s-podinfo
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-0.2.1.tgz
+    version: 0.2.1
   - apiVersion: v1
     appVersion: 0.5.0
-    created: 2018-08-04T02:00:00.946091506+03:00
+    created: 2018-08-17T18:44:47.408857715+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: dfe7cf44aef0d170549918b00966422a07e7611f9d0081fb34f5b5beb0641c00
     engine: gotpl
@@ -55,7 +97,7 @@ entries:
     version: 0.2.0
   - apiVersion: v1
     appVersion: 0.3.0
-    created: 2018-08-04T02:00:00.945649351+03:00
+    created: 2018-08-17T18:44:47.407706617+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: 4865a2d8b269cf453935cda9661c2efb82c16411471f8c11221a6d03d9bb58b1
     engine: gotpl
@@ -69,41 +111,21 @@ entries:
     urls:
     - https://stefanprodan.github.io/k8s-podinfo/podinfo-0.1.0.tgz
     version: 0.1.0
-  weave-flux:
+  podinfo-istio:
   - apiVersion: v1
-    appVersion: 1.3.0
-    created: 2018-08-04T02:00:00.947870112+03:00
-    description: Flux is a tool that automatically ensures that the state of a cluster
-      matches what is specified in version control
-    digest: 1f52e427bb1d728641405f5ad9c514e8861905c110c14db95516629d24443b7d
+    appVersion: 0.6.0
+    created: 2018-08-17T18:44:47.410653895+03:00
+    description: Podinfo Helm chart for Istio
+    digest: 79d9cbe4ba8b83ced977d895e56c1223d1fcd88a15f2df1981365c39cf6f4de7
     engine: gotpl
-    home: https://weave.works
-    icon: https://landscape.cncf.io/logos/weave-flux.svg
+    home: https://github.com/stefanprodan/k8s-podinfo
     maintainers:
-    - email: stefan@weave.works
+    - email: stefanprodan@users.noreply.github.com
       name: stefanprodan
-    name: weave-flux
+    name: podinfo-istio
     sources:
-    - https://github.com/weaveworks/flux
+    - https://github.com/stefanprodan/k8s-podinfo
     urls:
-    - https://stefanprodan.github.io/k8s-podinfo/weave-flux-0.2.0.tgz
-    version: 0.2.0
-  - apiVersion: v1
-    appVersion: 1.2.5
-    created: 2018-08-04T02:00:00.947340919+03:00
-    description: Flux is a tool that automatically ensures that the state of a cluster
-      matches what is specified in version control
-    digest: 9e18fb8d175f4fac3b054905c7110d18b6d18f884011df9e9d010c66337da7ec
-    engine: gotpl
-    home: https://weave.works
-    icon: https://www.weave.works/assets/images/bltd108e8f850ae9e7c/weave-logo-512.png
-    maintainers:
-    - email: stefan@weave.works
-      name: Stefan Prodan
-    name: weave-flux
-    sources:
-    - https://github.com/weaveworks/flux
-    urls:
-    - https://stefanprodan.github.io/k8s-podinfo/weave-flux-0.1.0.tgz
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-istio-0.1.0.tgz
     version: 0.1.0
-generated: 2018-08-04T02:00:00.942959149+03:00
+generated: 2018-08-17T18:44:47.404359545+03:00

pkg/fscache/fscache.go

@@ -94,13 +94,16 @@ func (w *Watcher) updateCache() error {
 		}
 	}
 
-	// clear cache
+	// remove deleted files from cache
 	w.Cache.Range(func(key interface{}, value interface{}) bool {
-		w.Cache.Delete(key)
+		_, ok := fileMap[key.(string)]
+		if !ok {
+			w.Cache.Delete(key)
+		}
 		return true
 	})
 
-	// load cache
+	// sync cache
 	for k, v := range fileMap {
 		w.Cache.Store(k, v)
 	}

pkg/server/api.go

@@ -0,0 +1,178 @@
+package server
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/rs/zerolog/log"
+	"github.com/stefanprodan/k8s-podinfo/pkg/version"
+)
+
+func (s *Server) apiInfo(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != "/api/info" && r.Method != http.MethodGet {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	host, _ := os.Hostname()
+	color := os.Getenv("color")
+	if len(color) < 1 {
+		color = "blue"
+	}
+
+	msg := os.Getenv("message")
+	if len(msg) < 1 {
+		msg = fmt.Sprintf("Greetings from podinfo v%v", version.VERSION)
+	}
+
+	data := struct {
+		Message  string `json:"message"`
+		Version  string `json:"version"`
+		Revision string `json:"revision"`
+		Hostname string `json:"hostname"`
+		Color    string `json:"color"`
+	}{
+		Message:  msg,
+		Version:  version.VERSION,
+		Revision: version.GITCOMMIT,
+		Hostname: host,
+		Color:    color,
+	}
+
+	d, err := json.Marshal(data)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.Header().Set("X-Content-Type-Options", "nosniff")
+	w.WriteHeader(http.StatusOK)
+	w.Write(d)
+}
+
+func (s *Server) apiEcho(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != "/api/echo" && r.Method != http.MethodPost {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	body, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		log.Error().Msgf("Reading the request body failed: %v", err)
+		jsonError(w, "invalid request body", http.StatusBadRequest)
+		return
+	}
+
+	backendURL := os.Getenv("backendURL")
+	if len(backendURL) > 0 {
+		backendReq, err := http.NewRequest("POST", backendURL, bytes.NewReader(body))
+		if err != nil {
+			log.Error().Err(err).Msgf("%v backend call failed", r.URL.Path)
+			jsonError(w, "backend call failed", http.StatusInternalServerError)
+			return
+		}
+
+		// forward headers
+		copyTracingHeaders(r, backendReq)
+		setVersionHeaders(backendReq)
+
+		// TODO: make the timeout configurable
+		ctx, cancel := context.WithTimeout(backendReq.Context(), 2*time.Minute)
+		defer cancel()
+
+		// call backend
+		resp, err := http.DefaultClient.Do(backendReq.WithContext(ctx))
+		if err != nil {
+			log.Error().Err(err).Msgf("backend call to %s failed", backendURL)
+			jsonError(w, "backend call failed", http.StatusInternalServerError)
+			return
+		}
+
+		defer resp.Body.Close()
+
+		// copy error status from backend and exit
+		if resp.StatusCode >= 400 {
+			w.WriteHeader(resp.StatusCode)
+			return
+		}
+
+		// forward the received body
+		rbody, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			log.Error().Err(err).Msgf("%v reading the backend request body failed", r.URL.Path)
+			jsonError(w, "backend call failed", http.StatusInternalServerError)
+			return
+		}
+
+		// set logLevel=info when load testing
+		log.Debug().Msgf("Payload received %v from backend: %s", r.URL.Path, string(rbody))
+
+		setResponseHeaders(w)
+		w.Write(rbody)
+	} else {
+		setResponseHeaders(w)
+		w.Write(body)
+	}
+}
+
+func copyTracingHeaders(from *http.Request, to *http.Request) {
+	headers := []string{
+		"x-request-id",
+		"x-b3-traceid",
+		"x-b3-spanid",
+		"x-b3-parentspanid",
+		"x-b3-sampled",
+		"x-b3-flags",
+		"x-ot-span-context",
+	}
+
+	for i := range headers {
+		headerValue := from.Header.Get(headers[i])
+		if len(headerValue) > 0 {
+			to.Header.Set(headers[i], headerValue)
+		}
+	}
+}
+
+func setVersionHeaders(r *http.Request) {
+	r.Header.Set("X-API-Version", version.VERSION)
+	r.Header.Set("X-API-Revision", version.GITCOMMIT)
+}
+
+func setResponseHeaders(w http.ResponseWriter) {
+	color := os.Getenv("color")
+	if len(color) < 1 {
+		color = "blue"
+	}
+	w.Header().Set("X-Color", color)
+	w.WriteHeader(http.StatusAccepted)
+}
+
+func jsonError(w http.ResponseWriter, error string, code int) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	w.Header().Set("X-Content-Type-Options", "nosniff")
+	w.WriteHeader(code)
+
+	data := struct {
+		Code    int    `json:"code"`
+		Message string `json:"message"`
+	}{
+		Code:    code,
+		Message: error,
+	}
+
+	body, err := json.Marshal(data)
+	if err != nil {
+		log.Debug().Err(err).Msg("jsonError marshal failed")
+	} else {
+		w.Write(body)
+	}
+}

pkg/server/handlers.go

@@ -5,10 +5,12 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"encoding/json"
+	"html/template"
 	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
+	"strings"
 	"sync/atomic"
 	"time"
 
@@ -23,23 +25,50 @@ func (s *Server) index(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	resp, err := makeResponse()
-	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		w.Write([]byte(err.Error()))
+	log.Debug().Msgf("Request %s received from %s on %s", r.Header.Get("x-request-id"), r.RemoteAddr, r.RequestURI)
+
+	if strings.Contains(r.UserAgent(), "Mozilla") {
+		uiPath := os.Getenv("uiPath")
+		if len(uiPath) < 1 {
+			uiPath = "ui"
+		}
+		tmpl, err := template.New("vue.html").ParseFiles(path.Join(uiPath, "vue.html"))
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(path.Join(uiPath, "vue.html") + err.Error()))
+			return
+		}
+
+		host, _ := os.Hostname()
+		data := struct {
+			Title string
+		}{
+			Title: host,
+		}
+
+		if err := tmpl.Execute(w, data); err != nil {
+			http.Error(w, path.Join(uiPath, "vue.html")+err.Error(), http.StatusInternalServerError)
+		}
+
+	} else {
+		resp, err := makeResponse()
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(err.Error()))
+			return
+		}
+		d, err := yaml.Marshal(resp)
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(err.Error()))
+			return
+		}
+		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		w.Header().Set("X-Content-Type-Options", "nosniff")
+		w.WriteHeader(http.StatusOK)
+		w.Write(d)
 	}
 
-	d, err := yaml.Marshal(resp)
-	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		w.Write([]byte(err.Error()))
-		return
-	}
-
-	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
-	w.Header().Set("X-Content-Type-Options", "nosniff")
-	w.WriteHeader(http.StatusOK)
-	w.Write(d)
 }
 
 func (s *Server) echo(w http.ResponseWriter, r *http.Request) {
@@ -86,9 +115,21 @@ func (s *Server) backend(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		backendURL := os.Getenv("backend_url")
+		backendURL := os.Getenv("backendURL")
 		if len(backendURL) > 0 {
-			resp, err := http.Post(backendURL, r.Header.Get("Content-type"), bytes.NewReader(body))
+			backendReq, err := http.NewRequest("POST", backendURL, bytes.NewReader(body))
+			if err != nil {
+				log.Error().Msgf("Backend call failed: %v", err)
+				w.WriteHeader(http.StatusInternalServerError)
+				w.Write([]byte(err.Error()))
+				return
+			}
+
+			// forward tracing headers
+			copyTracingHeaders(r, backendReq)
+			setVersionHeaders(backendReq)
+
+			resp, err := http.DefaultClient.Do(backendReq)
 			if err != nil {
 				log.Error().Msgf("Backend call failed: %v", err)
 				w.WriteHeader(http.StatusInternalServerError)
@@ -96,6 +137,10 @@ func (s *Server) backend(w http.ResponseWriter, r *http.Request) {
 				return
 			}
 			defer resp.Body.Close()
+			if resp.StatusCode >= 500 {
+				w.WriteHeader(resp.StatusCode)
+				return
+			}
 			rbody, err := ioutil.ReadAll(resp.Body)
 			if err != nil {
 				log.Error().Msgf("Reading the backend request body failed: %v", err)
@@ -104,11 +149,12 @@ func (s *Server) backend(w http.ResponseWriter, r *http.Request) {
 				return
 			}
 			log.Debug().Msgf("Payload received from backend: %s", string(rbody))
-			w.WriteHeader(http.StatusAccepted)
+
+			setResponseHeaders(w)
 			w.Write(rbody)
 		} else {
 			w.WriteHeader(http.StatusInternalServerError)
-			w.Write([]byte("Backend not specified, set backend_url env var"))
+			w.Write([]byte("Backend not specified, set backendURL env var"))
 		}
 	default:
 		w.WriteHeader(http.StatusNotAcceptable)

pkg/server/response.go

@@ -3,6 +3,7 @@ package server
 import (
 	"bufio"
 	"crypto/tls"
+	"encoding/json"
 	"io/ioutil"
 	"net/http"
 	"os"
@@ -99,7 +100,7 @@ func runtimeToMap() map[string]string {
 		"max_procs":     strconv.FormatInt(int64(runtime.GOMAXPROCS(0)), 10),
 		"num_goroutine": strconv.FormatInt(int64(runtime.NumGoroutine()), 10),
 		"num_cpu":       strconv.FormatInt(int64(runtime.NumCPU()), 10),
-		"external_ip":   findIp("http://api.ipify.org"),
+		"external_ip":   findIp("http://httpbin.org/ip"),
 	}
 	return info
 }
@@ -117,7 +118,7 @@ func findIp(url string) string {
 	req, _ := http.NewRequest("GET", url, nil)
 	res, err := client.Do(req)
 	if err != nil {
-		log.Error().Err(errors.Wrapf(err, "cannot connect to %s", url)).Msg("ipify timeout")
+		log.Error().Err(errors.Wrapf(err, "cannot connect to %s", url)).Msg("timeout")
 		return ip
 	}
 
@@ -129,7 +130,12 @@ func findIp(url string) string {
 			if err != nil {
 				return ip
 			}
-			return string(contents)
+			jsonMap := make(map[string]string)
+			err = json.Unmarshal([]byte(contents), &jsonMap)
+			if err != nil {
+				return ip
+			}
+			return jsonMap["origin"]
 		}
 	}
 

pkg/server/server.go

@@ -57,6 +57,10 @@ func NewServer(options ...func(*Server)) *Server {
 	s.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
 	s.mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
 
+	// API
+	s.mux.HandleFunc("/api/info", s.apiInfo)
+	s.mux.HandleFunc("/api/echo", s.apiEcho)
+
 	return s
 }
 
@@ -115,6 +119,12 @@ func ListenAndServe(port string, timeout time.Duration, stopCh <-chan struct{})
 
 	log.Info().Msgf("Shutting down HTTP server with timeout: %v", timeout)
 
+	// wait for Kubernetes readiness probe
+	// to remove this instance from the load balancer
+	// the readiness check interval must lower than the timeout
+	time.Sleep(timeout)
+
+	// attempt graceful shutdown
 	if err := srv.Shutdown(ctx); err != nil {
 		log.Error().Err(err).Msg("HTTP server graceful shutdown failed")
 	} else {

pkg/version/version.go

@@ -1,4 +1,4 @@
 package version
 
-var VERSION = "0.5.0"
+var VERSION = "0.6.1"
 var GITCOMMIT = "unknown"

ui/vue.html

@@ -0,0 +1,194 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>{{.Title}}</title>
+  <meta charset="utf-8">
+  <!-- <meta http-equiv="refresh" content="5"> -->
+  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
+  <link rel="shortcut icon" type="image/png" href="https://kubernetes.io/images/favicon.png">
+  <link href='https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Material+Icons' rel="stylesheet">
+  <link href="https://unpkg.com/vuetify/dist/vuetify.min.css" rel="stylesheet">
+  <style>
+	[v-cloak] {
+  		display: none;
+	}
+  </style>
+</head>
+<body>
+ <div id="app" v-cloak>
+   <v-app dark>
+    <v-content>
+      <section>
+        <v-parallax src="#" height="600" :class="info.color">
+          <v-layout
+            column
+            align-center
+            justify-center
+            class="white--text"
+          >
+            <img src="https://d33wubrfki0l68.cloudfront.net/33a12d8be0bc50be4738443101616e968c7afb8f/cba76/images/scalable.png" alt="kubernetes" height="200">
+            <h1 class="white--text mb-2 display-1 text-xs-center">${ info.message }</h1>
+            <div class="subheading mb-3 text-xs-center">Served by <b>${ info.hostname }</b></div>
+            <v-btn
+              class="red darken-2 mt-5"
+              dark
+              large
+              @click="postBackend()"
+            >
+              <v-badge left color="red">
+                <span slot="badge">${ pings }</span>
+                <v-icon left dark>touch_app</v-icon>
+              </v-badge>
+              Ping 
+            </v-btn>
+          </v-layout>
+        </v-parallax>
+      </section>
+      <section>
+        <v-layout
+          column
+          wrap
+          class="my-5"
+          align-center
+        >
+          <v-flex xs12 sm4 class="my-3">
+            <div class="text-xs-center">
+              <h2 class="headline">The best way to start developing</h2>
+              <span class="subheading">
+                stateless microservices with Go for Kubernetes
+              </span>
+            </div>
+          </v-flex>
+          <v-flex xs12>
+            <v-container grid-list-xl>
+              <v-layout row wrap align-center>
+                <v-flex xs12 md4>
+                  <v-card class="elevation-0 transparent">
+                    <v-card-text class="text-xs-center">
+                      <v-icon x-large class="blue--text text--lighten-2">cloud</v-icon>
+                    </v-card-text>
+                    <v-card-title primary-title class="layout justify-center">
+                      <div class="headline text-xs-center">Cloud Native</div>
+                    </v-card-title>
+                    <v-card-text>
+                      Distributed as a Helm chart. Builtin Kubernetes health checks (readiness and liveness).
+                      Graceful shutdown on interrupt signals.
+                    </v-card-text>
+                  </v-card>
+                </v-flex>
+                <v-flex xs12 md4>
+                  <v-card class="elevation-0 transparent">
+                    <v-card-text class="text-xs-center">
+                      <v-icon x-large class="blue--text text--lighten-2">graphic_eq</v-icon>
+                    </v-card-text>
+                    <v-card-title primary-title class="layout justify-center">
+                      <div class="headline">Observability</div>
+                    </v-card-title>
+                    <v-card-text>
+                      Instrumentation with Prometheus (RED method).
+                      Structured logging with zerolog and Fluentd.
+                      Tracing with Jaeger and Istio.
+                    </v-card-text>
+                  </v-card>
+                </v-flex>
+                <v-flex xs12 md4>
+                  <v-card class="elevation-0 transparent">
+                    <v-card-text class="text-xs-center">
+                      <v-icon x-large class="blue--text text--lighten-2">flash_on</v-icon>
+                    </v-card-text>
+                    <v-card-title primary-title class="layout justify-center">
+                      <div class="headline text-xs-center">Release automation</div>
+                    </v-card-title>
+                    <v-card-text>
+                      Multi-platform Docker image AMD64 and ARMv7.
+                      CI/CD powered by: TravisCI CircleCI Quay.io Google Cloud Container Builder Skaffold Weave Flux.
+                    </v-card-text>
+                  </v-card>
+                </v-flex>
+              </v-layout>
+            </v-container>
+          </v-flex>
+        </v-layout>
+      </section>
+
+      <v-footer class="blue darken-2">
+        <v-layout row wrap align-center>
+          <v-flex xs12>
+            <div class="white--text ml-3">
+              Powered
+              by <a class="white--text" href="https://github.com/stefanprodan/k8s-podinfo" target="_blank">podinfo</a>
+              version ${ info.version } revision ${ info.revision }
+            </div>
+          </v-flex>
+        </v-layout>
+      </v-footer>
+    </v-content>
+  </v-app>
+ </div>
+ <script src="https://unpkg.com/vue/dist/vue.min.js"></script>
+ <script src="https://unpkg.com/vuetify/dist/vuetify.min.js"></script>
+ <script>
+   new Vue({
+    delimiters: ['${', '}'],
+    el: '#app',
+    data: function() {
+    return {
+        info: {},
+        timer: '',
+        color: '',
+        pings: 0
+    }
+    },
+    created: function() {
+        this.getInfo();
+        this.timer = setInterval(this.getInfo, 3000)
+    },
+    methods: {
+        getInfo: function() {
+            var xhr = new XMLHttpRequest()
+            var self = this
+            xhr.open('GET', "/api/info")
+            xhr.onload = function () {
+                data = JSON.parse(xhr.responseText)
+                // reload page when the version changes
+                if (self.info.version) {
+                    if (self.info.version != data.version) {
+                        console.log("New version", data.version)
+                        window.location.reload()
+                    }
+                }
+                self.info = data
+                document.title = data.hostname
+            }
+            xhr.onerror = function() {
+                console.log(xhr.responseText || 'Network request failed')
+            }
+            xhr.send()
+        },
+        postBackend: function() {
+            var self = this
+            fetch("/api/echo", {
+                method: 'post',
+                headers: {
+                "Content-type": "application/json; charset=UTF-8",
+                "X-APP": Math.random(),
+                },
+                body: JSON.stringify({random: Math.random()})
+            })
+            .then(function(response) {
+                self.pings++
+                self.color = response.headers.get('X-Color')
+                return response.json()
+            })
+            .then(function(json) {
+                console.log('Request successful', json);
+            })
+            .catch(function (error) {
+                console.log('Request failed', error);
+            });
+        }
+    }
+  })
+ </script>
+</body>
+</html>