CoreOS etcd-operator (helm#214)

* initial commit

* update NOTES.txt, enable cluster by default

* update default etcd version
add README
rename default values
update NOTES.txt

* add quotes to app label value

* disable cluster by default as TPR get's created by operator

* update PV provisioner comments

stable/etcd-operator/.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

stable/etcd-operator/Chart.yaml

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+apiVersion: v1
+description: CoreOS etcd-operator Helm chart for Kubernetes
+name: etcd-operator
+version: 0.1.0
+sources:
+  - https://github.com/coreos/etcd-operator
+maintainers:
+  - name: Lachlan Evenson
+    email: [email protected]
+icon: https://github.com/coreos/etcd/blob/master/logos/etcd-horizontal-color.png

stable/etcd-operator/README.md

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+# CoreOS etcd-operator
+
+[etcd-operator](https://coreos.com/blog/introducing-the-etcd-operator.html) Simplify etcd cluster 
+configuration and management.
+
+__DISCLAIMER:__ While this chart has been well-tested, the etcd-operator is still currently in alpha.
+Current project status is available [here](https://github.com/coreos/etcd-operator) 
+
+## Introduction
+
+This chart bootstraps an etcd-operator and allows the deployment of etcd-cluster(s).
+
+## Official Documentation
+
+Official project documentation found [here](https://github.com/coreos/etcd-operator)
+
+## Prerequisites
+
+- Kubernetes 1.4+ with Beta APIs enabled
+- __Suggested:__ PV provisioner support in the underlying infrastructure to support backups
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```bash
+$ helm install stable/etcd-operator --name my-release
+```
+
+## Uninstalling the Chart
+
+To uninstall/delete the `my-release` deployment:
+
+```bash
+$ helm delete my-release
+```
+
+The command removes all the Kubernetes components EXCEPT the persistent volume.
+
+## Updating
+Updating the TPR resource will not result in the cluster being update until `kubectl apply` for
+TPRs is fixed see [kubernetes/issues/29542](https://github.com/kubernetes/kubernetes/issues/29542)
+Work around options are documented [here](https://github.com/coreos/etcd-operator#resize-an-etcd-cluster)
+
+## Configuration
+
+The following tables lists the configurable parameters of the etcd-operator chart and their default values.
+
+| Parameter                                         | Description                                                          | Default                                        |
+| ------------------------------------------------- | -------------------------------------------------------------------- | ---------------------------------------------- |
+| `replicaCount`                                    | Number of etcd-operator replicas to create (only 1 is supported)     | `1`                                            |
+| `image.repository`                                | etcd-operator container image                                        | `quay.io/coreos/etcd-operator`                 |
+| `image.tag`                                       | etcd-operator container image tag                                    | `latest`                                       |
+| `image.pullPolicy`                                | etcd-operator container image pull policy                            | `IfNotPresent`                                 |
+| `resources.limits.cpu`                            | CPU limit per etcd-operator pod                                      | `100m`                                         |
+| `resources.limits.memory`                         | Memory limit per etcd-operator pod                                   | `128Mi`                                        |
+| `resources.requests.cpu`                          | CPU request per etcd-operator pod                                    | `100m`                                         |
+| `resources.requests.memory`                       | Memory request per etcd-operator pod                                 | `128Mi`                                        |
+| `cluster.enabled`                                 | Whether to enable provisioning of and etcd-cluster                   | `true`                                         |
+| `cluster.name`                                    | etcd cluster name                                                    | `etcd-cluster`                                 |
+| `cluster.version`                                 | etcd cluster version                                                 | `v3.1.0-rc.0`                               |
+| `cluster.size`                                    | etcd cluster size                                                    | `3`                                            |
+| `cluster.backup.enabled`                          | Whether to create PV for cluster backups                             | `true`                                         |
+| `cluster.backup.provisioner`                      | Which PV provisioner to use                                          | `kubernetes.io/gce-pd` (kubernetes.io/aws-ebs) |
+| `cluster.backup.config.snapshotIntervalInSecond`  | etcd snapshot interval in seconds                                    | `30`                                           |
+| `cluster.backup.config.maxSnapshot`               | maximum number of snapshots to keep                                  | `5`                                            |
+| `cluster.backup.config.volumeSizeInMB`            | size of backup PV                                                    | `512MB`                                        |
+| `cluster.backup.config.storageType`              | Type to storage to provision                                          | `PersistentVolume`                             |
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example:
+
+```bash
+$ helm install --name my-release --set cluster.version=v3.1.0-alpha.1  stable/etcd-operator
+```
+
+Alternatively, a YAML file that specifies the values for the parameters can be provided while
+installing the chart. For example:
+
+```bash
+$ helm install --name my-release --values values.yaml stable/etcd-operator
+```

stable/etcd-operator/templates/NOTES.txt

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+{{- if .Values.cluster.enabled -}}
+1. Watch etcd cluster start
+  kubectl get pods -l etcd_cluster={{ .Values.cluster.name }} --namespace {{ .Release.Namespace }} -w
+2. Confirm etcd cluster is healthy
+  $ kubectl run --rm -i --tty etcd-test --image quay.io/coreos/etcd --restart=Never -- /bin/sh
+  / # ETCDCTL_API=3 etcdctl --endpoints http://{{ .Values.cluster.name }}-0000:2379 put foo bar
+  / # ETCDCTL_API=3 etcdctl --endpoints http://{{ .Values.cluster.name }}-0000:2379 member list
+  OK
+  (ctrl-D to exit)
+3. Optional
+  Check the etcd-operator logs
+  export POD=$(kubectl get pods -l app={{ template "fullname" . }} --namespace {{ .Release.Namespace }} --output name)
+  kubectl logs $POD --namespace={{ .Release.Namespace }}
+
+{{- else -}}
+1. etcd-operator deployed. 
+  If you would like to deploy an etcd-cluster set cluster.enabled to true in values.yaml
+  Check the etcd-operator logs
+    export POD=$(kubectl get pods -l app={{ template "fullname" . }} --namespace {{ .Release.Namespace }} --output name)
+    kubectl logs $POD --namespace={{ .Release.Namespace }}
+
+{{- end -}}

stable/etcd-operator/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 24 -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 24 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "fullname" -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 24 -}}
+{{- end -}}

stable/etcd-operator/templates/deployment.yaml

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+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: {{ template "fullname" . }}
+  labels:
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    app: "{{ template "fullname" . }}"
+    heritage: "{{ .Release.Service }}"
+    release: "{{ .Release.Name }}"
+spec:
+  replicas: {{ .Values.replicaCount }}
+  template:
+    metadata:
+      labels:
+        chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+        app: {{ template "fullname" . }}
+        heritage: "{{ .Release.Service }}"
+        release: "{{ .Release.Name }}"
+    spec:
+      containers:
+      - name: {{ .Chart.Name }}
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        command: 
+        - "/bin/sh"
+        - "-c"
+        - "/usr/local/bin/etcd-operator --pv-provisioner={{ .Values.cluster.backup.provisioner }}"
+        env:
+        - name: MY_POD_NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        resources:
+{{ toYaml .Values.resources | indent 12 }}

stable/etcd-operator/templates/etcd-cluster.yaml

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+{{- if .Values.cluster.enabled -}}
+apiVersion: "coreos.com/v1"
+kind: "EtcdCluster"
+metadata:
+  labels:
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    app: "{{ template "fullname" . }}"
+    heritage: "{{ .Release.Service }}"
+    release: "{{ .Release.Name }}"
+  name: "{{ .Values.cluster.name }}"
+spec:
+  size: {{ .Values.cluster.size }}
+  version: "{{ .Values.cluster.version }}"
+  {{- if .Values.cluster.backup.enabled }}
+  backup:
+{{ toYaml .Values.cluster.backup.config | indent 4 }}
+  {{- end -}}
+{{- end -}}

stable/etcd-operator/values.yaml

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+# Default values for etcd-operator.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+replicaCount: 1
+image:
+  repository: quay.io/coreos/etcd-operator
+  tag: latest
+  pullPolicy: IfNotPresent
+resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 128Mi
+## etcd-cluster specific values
+cluster:
+  enabled: false
+  name: etcd-cluster
+  size: 3
+  version: v3.1.0-rc.0
+  backup:
+    enabled: false
+    ## Cloud specific PV provisioner
+    ## Supports either kubernetes.io/gce-pd or kubernetes.io/aws-ebs
+    provisioner: kubernetes.io/gce-pd
+    config:
+      ## short snapshot interval for testing, do not use this in production!
+      snapshotIntervalInSecond: 30
+      maxSnapshot: 5
+      volumeSizeInMB: 512
+      storageType: PersistentVolume