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Merge pull request #237 from stefanprodan/hpa-v2

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Update HPA to autoscaling/v2
This commit is contained in:
Stefan Prodan
2022-12-21 12:43:55 +02:00
committed by GitHub
parent 3053e634f9 b39526ebe8
commit 1a89d81ebb
6 changed files with 79 additions and 70 deletions
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README.md
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@@ -22,7 +22,6 @@ Specifications:
* Swagger docs
* CUE, Helm and Kustomize installers
* End-to-End testing with Kubernetes Kind and Helm
* Kustomize testing with GitHub Actions and Open Policy Agent
* Multi-arch container image with Docker buildx and Github Actions
* Container image signing with Sigstore cosign
* CVE scanning with Trivy
@@ -76,6 +75,8 @@ To access the Swagger UI open `<podinfo-host>/swagger/index.html` in a browser.
### Install
To install Podinfo on Kubernetes the minimum required version is **Kubernetes v1.23**.
#### Helm
Install from github.io:
charts/podinfo/Chart.yaml
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@@ -10,4 +10,4 @@ maintainers:
name: stefanprodan
sources:
- https://github.com/stefanprodan/podinfo
kubeVersion: ">=1.19.0-0"
kubeVersion: ">=1.23.0-0"
charts/podinfo/README.md
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@@ -9,7 +9,23 @@ for end-to-end testing and workshops.
## Installing the Chart
To install the chart with the release name `my-release`:
The Podinfo charts are published to
[GitHub Container Registry](https://github.com/stefanprodan/podinfo/pkgs/container/charts%2Fpodinfo)
and signed with [Cosign](https://github.com/sigstore/cosign) & GitHub Actions OIDC.
To install the chart with the release name `my-release` from GHCR:
```console
$ helm upgrade -i my-release oci://ghcr.io/stefanprodan/charts/podinfo
```
To verify a chart with Cosign:
```console
$ cosign verify ghcr.io/stefanprodan/charts/podinfo:<VERSION>
```
Alternatively, you can install the chart from GitHub pages:
```console
$ helm repo add podinfo https://stefanprodan.github.io/podinfo
@@ -34,61 +50,61 @@ The command removes all the Kubernetes components associated with the chart and
The following tables lists the configurable parameters of the podinfo chart and their default values.
Parameter | Default | Description
--- | --- | ---
`replicaCount` | `1` | Desired number of pods
`logLevel` | `info` | Log level: `debug`, `info`, `warn`, `error`
`backend` | `None` | Echo backend URL
`backends` | `[]` | Array of echo backend URLs
`cache` | `None` | Redis address in the format `tcp://<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
`faults.delay` | `false` | Random HTTP response delays between 0 and 5 seconds
`faults.error` | `false` | 1/3 chances of a random HTTP response error
`faults.unhealthy` | `false` | When set, the healthy state is never reached
`faults.unready` | `false` | When set, the ready state is never reached
`faults.testFail` | `false` | When set, a helm test is included which always fails
`faults.testTimeout` | `false` | When set, a helm test is included which always times out
`image.repository` | `stefanprodan/podinfo` | Image repository
`image.tag` | `<VERSION>` | Image tag
`image.pullPolicy` | `IfNotPresent` | Image pull policy
`service.enabled` | `true` | Create a Kubernetes Service, should be disabled when using [Flagger](https://flagger.app)
`service.type` | `ClusterIP` | Type of the Kubernetes Service
`service.metricsPort` | `9797` | Prometheus metrics endpoint port
`service.httpPort` | `9898` | Container HTTP port
`service.externalPort` | `9898` | ClusterIP HTTP port
`service.grpcPort` | `9999` | ClusterIP gPRC port
`service.grpcService` | `podinfo` | gPRC service name
`service.nodePort` | `31198` | NodePort for the HTTP endpoint
`h2c.enabled` | `false` | Allow upgrading to h2c (non-TLS version of HTTP/2)
`hpa.enabled` | `false` | Enables the Kubernetes HPA
`hpa.maxReplicas` | `10` | Maximum amount of pods
`hpa.cpu` | `None` | Target CPU usage per pod
`hpa.memory` | `None` | Target memory usage per pod
`hpa.requests` | `None` | Target HTTP requests per second per pod
`serviceAccount.enabled` | `false` | Whether a service account should be created
`serviceAccount.name` | `None` | The name of the service account to use, if not set and create is true, a name is generated using the fullname template
`serviceAccount.imagePullSecrets` | `[]` | List of image pull secrets if pulling from private registries.
`securityContext` | `{}` | The security context to be set on the podinfo container
`linkerd.profile.enabled` | `false` | Create Linkerd service profile
`serviceMonitor.enabled` | `false` | Whether a Prometheus Operator service monitor should be created
`serviceMonitor.interval` | `15s` | Prometheus scraping interval
`serviceMonitor.additionalLabels` | `{}` | Add additional labels to the service monitor |
`ingress.enabled` | `false` | Enables Ingress
`ingress.className ` | `""` | Use ingressClassName
`ingress.annotations` | `{}` | Ingress annotations
`ingress.hosts` | `[]` | Ingress accepted hosts
`ingress.tls` | `[]` | Ingress TLS configuration
`resources.requests.cpu` | `1m` | Pod CPU request
`resources.requests.memory` | `16Mi` | Pod memory request
`resources.limits.cpu` | `None` | Pod CPU limit
`resources.limits.memory` | `None` | Pod memory limit
`nodeSelector` | `{}` | Node labels for pod assignment
`tolerations` | `[]` | List of node taints to tolerate
`affinity` | `None` | Node/pod affinities
`podAnnotations` | `{}` | Pod annotations
| Parameter | Default | Description |
|-----------------------------------|------------------------|------------------------------------------------------------------------------------------------------------------------|
| `replicaCount` | `1` | Desired number of pods |
| `logLevel` | `info` | Log level: `debug`, `info`, `warn`, `error` |
| `backend` | `None` | Echo backend URL |
| `backends` | `[]` | Array of echo backend URLs |
| `cache` | `None` | Redis address in the format `tcp://<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 |
| `faults.delay` | `false` | Random HTTP response delays between 0 and 5 seconds |
| `faults.error` | `false` | 1/3 chances of a random HTTP response error |
| `faults.unhealthy` | `false` | When set, the healthy state is never reached |
| `faults.unready` | `false` | When set, the ready state is never reached |
| `faults.testFail` | `false` | When set, a helm test is included which always fails |
| `faults.testTimeout` | `false` | When set, a helm test is included which always times out |
| `image.repository` | `stefanprodan/podinfo` | Image repository |
| `image.tag` | `<VERSION>` | Image tag |
| `image.pullPolicy` | `IfNotPresent` | Image pull policy |
| `service.enabled` | `true` | Create a Kubernetes Service, should be disabled when using [Flagger](https://flagger.app) |
| `service.type` | `ClusterIP` | Type of the Kubernetes Service |
| `service.metricsPort` | `9797` | Prometheus metrics endpoint port |
| `service.httpPort` | `9898` | Container HTTP port |
| `service.externalPort` | `9898` | ClusterIP HTTP port |
| `service.grpcPort` | `9999` | ClusterIP gPRC port |
| `service.grpcService` | `podinfo` | gPRC service name |
| `service.nodePort` | `31198` | NodePort for the HTTP endpoint |
| `h2c.enabled` | `false` | Allow upgrading to h2c (non-TLS version of HTTP/2) |
| `hpa.enabled` | `false` | Enables the Kubernetes HPA |
| `hpa.maxReplicas` | `10` | Maximum amount of pods |
| `hpa.cpu` | `None` | Target CPU usage per pod |
| `hpa.memory` | `None` | Target memory usage per pod |
| `hpa.requests` | `None` | Target HTTP requests per second per pod |
| `serviceAccount.enabled` | `false` | Whether a service account should be created |
| `serviceAccount.name` | `None` | The name of the service account to use, if not set and create is true, a name is generated using the fullname template |
| `serviceAccount.imagePullSecrets` | `[]` | List of image pull secrets if pulling from private registries. |
| `securityContext` | `{}` | The security context to be set on the podinfo container |
| `linkerd.profile.enabled` | `false` | Create Linkerd service profile |
| `serviceMonitor.enabled` | `false` | Whether a Prometheus Operator service monitor should be created |
| `serviceMonitor.interval` | `15s` | Prometheus scraping interval |
| `serviceMonitor.additionalLabels` | `{}` | Add additional labels to the service monitor |
| `ingress.enabled` | `false` | Enables Ingress |
| `ingress.className ` | `""` | Use ingressClassName |
| `ingress.annotations` | `{}` | Ingress annotations |
| `ingress.hosts` | `[]` | Ingress accepted hosts |
| `ingress.tls` | `[]` | Ingress TLS configuration |
| `resources.requests.cpu` | `1m` | Pod CPU request |
| `resources.requests.memory` | `16Mi` | Pod memory request |
| `resources.limits.cpu` | `None` | Pod CPU limit |
| `resources.limits.memory` | `None` | Pod memory limit |
| `nodeSelector` | `{}` | Node labels for pod assignment |
| `tolerations` | `[]` | List of node taints to tolerate |
| `affinity` | `None` | Node/pod affinities |
| `podAnnotations` | `{}` | Pod annotations |
Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
@@ -112,13 +128,3 @@ $ helm install my-release podinfo/podinfo -f values.yaml
> **Tip**: You can use the default [values.yaml](values.yaml)
## Upgrading the chart
### To =< 5.0.0
Version 5.0.0 is a major update.
* The chart now follows the new Kubernetes label recommendations:
<https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/>
The simplest way to update is to do a force upgrade, which recreates the resources by doing a delete and an install.
charts/podinfo/templates/hpa.yaml
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@@ -1,5 +1,5 @@
{{- if .Values.hpa.enabled -}}
apiVersion: autoscaling/v2beta2
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
name: {{ template "podinfo.fullname" . }}
kustomize/hpa.yaml
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@@ -1,4 +1,4 @@
apiVersion: autoscaling/v2beta2
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
name: podinfo
test/deploy.sh
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@@ -24,4 +24,6 @@ helm upgrade --install podinfo ./charts/podinfo \
--set image.tag=latest \
--set tls.enabled=true \
--set certificate.create=true \
--set hpa.enabled=true \
--set hpa.cpu=95 \
--namespace=default