Flagger is a Kubernetes operator that automates the promotion of canary deployments using Istio routing for traffic shifting and Prometheus metrics for canary analysis.

Installing the Chart

To install the chart with the release name flagger:

$ helm upgrade --install flagger ./charts/flagger --namespace=istio-system

The command deploys Flagger on the Kubernetes cluster in the istio-system namespace. The configuration section lists the parameters that can be configured during installation.

Uninstalling the Chart

To uninstall/delete the flagger deployment:

$ helm delete --purge flagger

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 Flagger chart and their default values.

Parameter	Description	Default
`image.repository`	image repository	`stefanprodan/flagger`
`image.tag`	image tag	`<VERSION>`
`image.pullPolicy`	image pull policy	`IfNotPresent`
`resources.requests/cpu`	pod CPU request	`10m`
`resources.requests/memory`	pod memory request	`32Mi`
`resources.limits/cpu`	pod CPU limit	`1000m`
`resources.limits/memory`	pod memory limit	`512Mi`
`affinity`	node/pod affinities	None
`nodeSelector`	node labels for pod assignment	`{}`
`tolerations`	list of node taints to tolerate	`[]`

Specify each parameter using the --set key=value[,key=value] argument to helm upgrade. For example,

$ helm upgrade --install flagger ./charts/flagger \
  --namespace=istio-system \
  --set=image.tag=0.0.2

Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,

$ helm upgrade --install flagger ./charts/flagger \
  --namespace=istio-system \
  -f values.yaml

Tip

: You can use the default values.yaml