Merge pull request #86 from stefanprodan/redis-chart

Add Redis deployment to Helm chart

charts/podinfo/README.md

@@ -37,6 +37,7 @@ Parameter | Default | Description
 `backend` | `None` | Echo backend URL
 `backends` | `[]` | Array of echo backend URLs
 `cache` | `None` | Redis address in the format `<host>:<port>`
+`redis.enabled` | `false` | Create Redis deployment for caching purposes
 `ui.color` | `#34577c` |  UI color
 `ui.message` | `None` |  UI greetings message
 `ui.logo` | `None` |  UI logo

charts/podinfo/templates/deployment.yaml

@@ -54,6 +54,8 @@ spec:
             {{- end }}
             {{- if .Values.cache }}
             - --cache-server={{ .Values.cache }}
+            {{- else if .Values.redis.enabled }}
+            - --cache-server={{ template "podinfo.fullname" . }}:6379
             {{- end }}
             - --level={{ .Values.logLevel }}
             - --random-delay={{ .Values.faults.delay }}

charts/podinfo/templates/redis/config.yaml

@@ -0,0 +1,12 @@
+{{- if .Values.redis.enabled -}}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "podinfo.fullname" . }}-redis
+data:
+  redis.conf: |
+    maxmemory 64mb
+    maxmemory-policy allkeys-lru
+    save ""
+    appendonly no
+{{- end }}

charts/podinfo/templates/redis/deployment.yaml

@@ -0,0 +1,68 @@
+{{- if .Values.redis.enabled -}}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ template "podinfo.fullname" . }}-redis
+  labels:
+    app: {{ template "podinfo.fullname" . }}-redis
+spec:
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app: {{ template "podinfo.fullname" . }}-redis
+  template:
+    metadata:
+      labels:
+        app: {{ template "podinfo.fullname" . }}-redis
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/redis/config.yaml") . | sha256sum | quote }}
+    spec:
+      {{- if .Values.serviceAccount.enabled }}
+      serviceAccountName: {{ template "podinfo.serviceAccountName" . }}
+      {{- end }}
+      containers:
+        - name: redis
+          image: "{{ .Values.redis.repository }}:{{ .Values.redis.tag }}"
+          imagePullPolicy: IfNotPresent
+          command:
+            - redis-server
+            - "/redis-master/redis.conf"
+          ports:
+            - name: redis
+              containerPort: 6379
+              protocol: TCP
+          livenessProbe:
+            tcpSocket:
+              port: redis
+            initialDelaySeconds: 5
+            timeoutSeconds: 5
+          readinessProbe:
+            exec:
+              command:
+                - redis-cli
+                - ping
+            initialDelaySeconds: 5
+            timeoutSeconds: 5
+          resources:
+            limits:
+              cpu: 1000m
+              memory: 128Mi
+            requests:
+              cpu: 100m
+              memory: 32Mi
+          volumeMounts:
+            - mountPath: /var/lib/redis
+              name: data
+            - mountPath: /redis-master
+              name: config
+      volumes:
+        - name: data
+          emptyDir: {}
+        - name: config
+          configMap:
+            name: {{ template "podinfo.fullname" . }}-redis
+            items:
+              - key: redis.conf
+                path: redis.conf
+{{- end }}

charts/podinfo/templates/redis/service.yaml

@@ -0,0 +1,17 @@
+{{- if .Values.redis.enabled -}}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "podinfo.fullname" . }}-redis
+  labels:
+    app: {{ template "podinfo.fullname" . }}-redis
+spec:
+  type: ClusterIP
+  selector:
+    app: {{ template "podinfo.fullname" . }}-redis
+  ports:
+    - name: redis
+      port: 6379
+      protocol: TCP
+      targetPort: redis
+{{- end }}

charts/podinfo/values.yaml

@@ -4,7 +4,6 @@ replicaCount: 1
 logLevel: info
 backend: #http://backend-podinfo:9898/echo
 backends: []
-cache: ""
 
 ui:
   color: "#34577c"
@@ -48,6 +47,14 @@ hpa:
   # average http requests per second per pod (k8s-prometheus-adapter)
   requests:
 
+# Redis address in the format <host>:<port>
+cache: ""
+# Redis deployment
+redis:
+  enabled: false
+  repository: redis
+  tag: 6.0.1
+
 serviceAccount:
   # Specifies whether a service account should be created
   enabled: false