mirror of
https://github.com/fluxcd/flagger.git
synced 2026-04-15 06:57:34 +00:00
80 lines
2.3 KiB
Markdown
80 lines
2.3 KiB
Markdown
# Podinfo
|
|
|
|
Podinfo is a tiny web application made with Go
|
|
that showcases best practices of running canary deployments with Flagger and Istio.
|
|
|
|
## Installing the Chart
|
|
|
|
Add Flagger Helm repository:
|
|
|
|
```console
|
|
helm repo add flagger https://flagger.app
|
|
```
|
|
|
|
To install the chart with the release name `frontend`:
|
|
|
|
```console
|
|
helm upgrade -i frontend flagger/podinfo \
|
|
--namespace test \
|
|
--set nameOverride=frontend \
|
|
--set backend=http://backend.test:9898/echo \
|
|
--set canary.enabled=true \
|
|
--set canary.istioIngress.enabled=true \
|
|
--set canary.istioIngress.gateway=istio-system/public-gateway \
|
|
--set canary.istioIngress.host=frontend.istio.example.com
|
|
```
|
|
|
|
To install the chart as `backend`:
|
|
|
|
```console
|
|
helm upgrade -i backend flagger/podinfo \
|
|
--namespace test \
|
|
--set nameOverride=backend \
|
|
--set canary.enabled=true
|
|
```
|
|
|
|
## Uninstalling the Chart
|
|
|
|
To uninstall/delete the `frontend` deployment:
|
|
|
|
```console
|
|
$ helm delete --purge frontend
|
|
```
|
|
|
|
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 podinfo chart and their default values.
|
|
|
|
Parameter | Description | Default
|
|
--- | --- | ---
|
|
`image.repository` | image repository | `quay.io/stefanprodan/podinfo`
|
|
`image.tag` | image tag | `<VERSION>`
|
|
`image.pullPolicy` | image pull policy | `IfNotPresent`
|
|
`hpa.enabled` | enables HPA | `true`
|
|
`hpa.cpu` | target CPU usage per pod | `80`
|
|
`hpa.memory` | target memory usage per pod | `512Mi`
|
|
`hpa.minReplicas` | maximum pod replicas | `2`
|
|
`hpa.maxReplicas` | maximum pod replicas | `4`
|
|
`resources.requests/cpu` | pod CPU request | `1m`
|
|
`resources.requests/memory` | pod memory request | `16Mi`
|
|
`backend` | backend URL | None
|
|
`faults.delay` | random HTTP response delays between 0 and 5 seconds | `false`
|
|
`faults.error` | 1/3 chances of a random HTTP response error | `false`
|
|
|
|
Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
|
|
|
|
```console
|
|
$ helm install flagger/podinfo --name frontend \
|
|
--set=image.tag=1.4.1,hpa.enabled=false
|
|
```
|
|
|
|
Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
|
|
|
|
```console
|
|
$ helm install flagger/podinfo --name frontend -f values.yaml
|
|
```
|
|
|
|
|