Add canary analysis Grafana dashboard

Makefile

@@ -25,7 +25,7 @@ test: test-fmt test-codegen
 	go test ./...
 
 helm-package:
-	cd charts/ && helm package steerer/ && helm package podinfo-steerer/
+	cd charts/ && helm package steerer/ && helm package podinfo-steerer/ && helm package grafana/
 	mv charts/*.tgz docs/
 	helm repo index docs --url https://stefanprodan.github.io/steerer --merge ./docs/index.yaml
 

charts/grafana/.helmignore

@@ -0,0 +1,21 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj

charts/grafana/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+name: grafana
+version: 5.2.4
+appVersion: 5.2.0
+description: A Helm chart for monitoring progressive deployments powered by Istio and Steerer
+home: https://github.com/stefanprodan/steerer

charts/grafana/README.md

@@ -0,0 +1,65 @@
+# Weave Cloud Grafana
+
+Grafana v5 with Kubernetes dashboards and Prometheus and Weave Cloud data sources.
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```console
+$ helm install stable/grafana --name my-release \
+    --set service.type=NodePort \
+    --set token=WEAVE-TOKEN \
+    --set password=admin
+```
+
+The command deploys Grafana on the Kubernetes cluster in the default namespace.
+The [configuration](#configuration) section lists the parameters that can be configured during installation.
+
+## Uninstalling the Chart
+
+To uninstall/delete the `my-release` deployment:
+
+```console
+$ helm delete --purge my-release
+```
+
+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 Grafana chart and their default values.
+
+Parameter | Description | Default
+--- | --- | ---
+`image.repository` | Image repository | `grafana/grafana`
+`image.pullPolicy` | Image pull policy | `IfNotPresent`
+`image.tag` | Image tag | `5.0.1`
+`replicaCount` | desired number of pods | `1`
+`resources` | pod resources | `none`
+`tolerations` | List of node taints to tolerate | `[]`
+`affinity` | node/pod affinities | `node`
+`nodeSelector` | node labels for pod assignment | `{}`
+`service.type` | type of service | `LoadBalancer`
+`url` | Prometheus URL, used when Weave token is empty | `http://prometheus:9090`
+`token` | Weave Cloud token | `none`
+`user` | Grafana admin username | `admin`
+`password` | Grafana admin password | `none`
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
+
+```console
+$ helm install stable/grafana --name my-release \
+  --set=token=WEAVE-TOKEN \
+  --set password=admin
+```
+
+Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,
+
+```console
+$ helm install stable/grafana --name my-release -f values.yaml
+```
+
+> **Tip**: You can use the default [values.yaml](values.yaml)
+```
+