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Diffstat (limited to 'kubernetes/common/music/charts/zookeeper')
14 files changed, 863 insertions, 0 deletions
diff --git a/kubernetes/common/music/charts/zookeeper/.helmignore b/kubernetes/common/music/charts/zookeeper/.helmignore new file mode 100644 index 0000000000..f0c1319444 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/.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 diff --git a/kubernetes/common/music/charts/zookeeper/Chart.yaml b/kubernetes/common/music/charts/zookeeper/Chart.yaml new file mode 100644 index 0000000000..01e81736f6 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/Chart.yaml @@ -0,0 +1,15 @@ +name: zookeeper +home: https://zookeeper.apache.org/ +version: 1.0.2 +appVersion: 3.4.10 +description: Centralized service for maintaining configuration information, naming, + providing distributed synchronization, and providing group services. +icon: https://zookeeper.apache.org/images/zookeeper_small.gif +sources: +- https://github.com/apache/zookeeper +- https://github.com/kubernetes/contrib/tree/master/statefulsets/zookeeper +maintainers: +- name: lachie83 + email: lachlan.evenson@microsoft.com +- name: kow3ns + email: owensk@google.com diff --git a/kubernetes/common/music/charts/zookeeper/OWNERS b/kubernetes/common/music/charts/zookeeper/OWNERS new file mode 100644 index 0000000000..dd9facde2a --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/OWNERS @@ -0,0 +1,6 @@ +approvers: +- lachie83 +- kow3ns +reviewers: +- lachie83 +- kow3ns diff --git a/kubernetes/common/music/charts/zookeeper/README.md b/kubernetes/common/music/charts/zookeeper/README.md new file mode 100644 index 0000000000..22bbac49dc --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/README.md @@ -0,0 +1,140 @@ +# incubator/zookeeper + +This helm chart provides an implementation of the ZooKeeper [StatefulSet](http://kubernetes.io/docs/concepts/abstractions/controllers/statefulsets/) found in Kubernetes Contrib [Zookeeper StatefulSet](https://github.com/kubernetes/contrib/tree/master/statefulsets/zookeeper). + +## Prerequisites +* Kubernetes 1.6+ +* PersistentVolume support on the underlying infrastructure +* A dynamic provisioner for the PersistentVolumes +* A familiarity with [Apache ZooKeeper 3.4.x](https://zookeeper.apache.org/doc/current/) + +## Chart Components +This chart will do the following: + +* Create a fixed size ZooKeeper ensemble using a [StatefulSet](http://kubernetes.io/docs/concepts/abstractions/controllers/statefulsets/). +* Create a [PodDisruptionBudget](https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-disruption-budget/) so kubectl drain will respect the Quorum size of the ensemble. +* Create a [Headless Service](https://kubernetes.io/docs/concepts/services-networking/service/) to control the domain of the ZooKeeper ensemble. +* Create a Service configured to connect to the available ZooKeeper instance on the configured client port. +* Optionally apply a [Pod Anti-Affinity](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) to spread the ZooKeeper ensemble across nodes. +* Optionally start JMX Exporter and Zookeeper Exporter containers inside Zookeeper pods. +* Optionally create a job which creates Zookeeper chroots (e.g. `/kafka1`). + +## Installing the Chart +You can install the chart with the release name `zookeeper` as below. + +```console +$ helm repo add incubator http://storage.googleapis.com/kubernetes-charts-incubator +$ helm install --name zookeeper incubator/zookeeper +``` + +If you do not specify a name, helm will select a name for you. + +### Installed Components +You can use `kubectl get` to view all of the installed components. + +```console{%raw} +$ kubectl get all -l app=zookeeper +NAME: zookeeper +LAST DEPLOYED: Wed Apr 11 17:09:48 2018 +NAMESPACE: default +STATUS: DEPLOYED + +RESOURCES: +==> v1beta1/PodDisruptionBudget +NAME MIN AVAILABLE MAX UNAVAILABLE ALLOWED DISRUPTIONS AGE +zookeeper N/A 1 1 2m + +==> v1/Service +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +zookeeper-headless ClusterIP None <none> 2181/TCP,3888/TCP,2888/TCP 2m +zookeeper ClusterIP 10.98.179.165 <none> 2181/TCP 2m + +==> v1beta1/StatefulSet +NAME DESIRED CURRENT AGE +zookeeper 3 3 2m +``` + +1. `statefulsets/zookeeper` is the StatefulSet created by the chart. +1. `po/zookeeper-<0|1|2>` are the Pods created by the StatefulSet. Each Pod has a single container running a ZooKeeper server. +1. `svc/zookeeper-headless` is the Headless Service used to control the network domain of the ZooKeeper ensemble. +1. `svc/zookeeper` is a Service that can be used by clients to connect to an available ZooKeeper server. + +## Configuration +You can specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. + +Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example, + +```console +$ helm install --name my-release -f values.yaml incubator/zookeeper +``` + +## Default Values + +- You can find all user-configurable settings, their defaults and commentary about them in [values.yaml](values.yaml). + +## Deep Dive + +## Image Details +The image used for this chart is based on Ubuntu 16.04 LTS. This image is larger than Alpine or BusyBox, but it provides glibc, rather than ulibc or mucl, and a JVM release that is built against it. You can easily convert this chart to run against a smaller image with a JVM that is built against that image's libc. However, as far as we know, no Hadoop vendor supports, or has verified, ZooKeeper running on such a JVM. + +## JVM Details +The Java Virtual Machine used for this chart is the OpenJDK JVM 8u111 JRE (headless). + +## ZooKeeper Details +The ZooKeeper version is the latest stable version (3.4.10). The distribution is installed into /opt/zookeeper-3.4.10. This directory is symbolically linked to /opt/zookeeper. Symlinks are created to simulate a rpm installation into /usr. + +## Failover +You can test failover by killing the leader. Insert a key: +```console +$ kubectl exec zookeeper-0 -- /opt/zookeeper/bin/zkCli.sh create /foo bar; +$ kubectl exec zookeeper-2 -- /opt/zookeeper/bin/zkCli.sh get /foo; +``` + +Watch existing members: +```console +$ kubectl run --attach bbox --image=busybox --restart=Never -- sh -c 'while true; do for i in 0 1 2; do echo zk-${i} $(echo stats | nc <pod-name>-${i}.<headless-service-name>:2181 | grep Mode); sleep 1; done; done'; + +zk-2 Mode: follower +zk-0 Mode: follower +zk-1 Mode: leader +zk-2 Mode: follower +``` + +Delete Pods and wait for the StatefulSet controller to bring them back up: +```console +$ kubectl delete po -l app=zookeeper +$ kubectl get po --watch-only +NAME READY STATUS RESTARTS AGE +zookeeper-0 0/1 Running 0 35s +zookeeper-0 1/1 Running 0 50s +zookeeper-1 0/1 Pending 0 0s +zookeeper-1 0/1 Pending 0 0s +zookeeper-1 0/1 ContainerCreating 0 0s +zookeeper-1 0/1 Running 0 19s +zookeeper-1 1/1 Running 0 40s +zookeeper-2 0/1 Pending 0 0s +zookeeper-2 0/1 Pending 0 0s +zookeeper-2 0/1 ContainerCreating 0 0s +zookeeper-2 0/1 Running 0 19s +zookeeper-2 1/1 Running 0 41s +``` + +Check the previously inserted key: +```console +$ kubectl exec zookeeper-1 -- /opt/zookeeper/bin/zkCli.sh get /foo +ionid = 0x354887858e80035, negotiated timeout = 30000 + +WATCHER:: + +WatchedEvent state:SyncConnected type:None path:null +bar +``` + +## Scaling +ZooKeeper can not be safely scaled in versions prior to 3.5.x. This chart currently uses 3.4.x. There are manual procedures for scaling a 3.4.x ensemble, but as noted in the [ZooKeeper 3.5.2 documentation](https://zookeeper.apache.org/doc/r3.5.2-alpha/zookeeperReconfig.html) these procedures require a rolling restart, are known to be error prone, and often result in a data loss. + +While ZooKeeper 3.5.x does allow for dynamic ensemble reconfiguration (including scaling membership), the current status of the release is still alpha, and 3.5.x is therefore not recommended for production use. + +## Limitations +* StatefulSet and PodDisruptionBudget are beta resources. +* Only supports storage options that have backends for persistent volume claims. diff --git a/kubernetes/common/music/charts/zookeeper/templates/NOTES.txt b/kubernetes/common/music/charts/zookeeper/templates/NOTES.txt new file mode 100644 index 0000000000..4f7a27bd99 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/NOTES.txt @@ -0,0 +1,7 @@ +Thank you for installing ZooKeeper on your Kubernetes cluster. More information +about ZooKeeper can be found at https://zookeeper.apache.org/doc/current/ + +Your connection string should look like: + {{ template "common.fullname" . }}-0.{{ template "common.fullname" . }}-headless:{{ .Values.service.ports.client.port }},{{ template "common.fullname" . }}-1.{{ template "common.fullname" . }}-headless:{{ .Values.service.ports.client.port }},... + +You can also use the client service {{ template "common.fullname" . }}:{{ .Values.service.ports.client.port }} to connect to an available ZooKeeper server. diff --git a/kubernetes/common/music/charts/zookeeper/templates/_helpers.tpl b/kubernetes/common/music/charts/zookeeper/templates/_helpers.tpl new file mode 100644 index 0000000000..1ef5353fa1 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/_helpers.tpl @@ -0,0 +1,32 @@ +{{/* vim: set filetype=mustache: */}} +{{/* +Expand the name of the chart. +*/}} +{{- define "common.name" -}} +{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}} +{{- end -}} + +{{/* +Create a default fully qualified app name. +We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec). +If release name contains chart name it will be used as a full name. +*/}} +{{- define "common.fullname" -}} +{{- if .Values.fullnameOverride -}} +{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}} +{{- else -}} +{{- $name := default .Chart.Name .Values.nameOverride -}} +{{- if contains $name .Release.Name -}} +{{- .Release.Name | trunc 63 | trimSuffix "-" -}} +{{- else -}} +{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}} +{{- end -}} +{{- end -}} +{{- end -}} + +{{/* +Create chart name and version as used by the chart label. +*/}} +{{- define "zookeeper.chart" -}} +{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}} +{{- end -}} diff --git a/kubernetes/common/music/charts/zookeeper/templates/config-jmx-exporter.yaml b/kubernetes/common/music/charts/zookeeper/templates/config-jmx-exporter.yaml new file mode 100644 index 0000000000..aeb9a2c031 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/config-jmx-exporter.yaml @@ -0,0 +1,19 @@ +{{- if .Values.exporters.jmx.enabled }} +apiVersion: v1 +kind: ConfigMap +metadata: + name: {{ .Release.Name }}-jmx-exporter + labels: + app: {{ template "common.name" . }} + chart: {{ .Chart.Name }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} +data: + config.yml: |- + hostPort: 127.0.0.1:{{ .Values.env.JMXPORT }} + lowercaseOutputName: {{ .Values.exporters.jmx.config.lowercaseOutputName }} + rules: +{{ .Values.exporters.jmx.config.rules | toYaml | indent 6 }} + ssl: false + startDelaySeconds: {{ .Values.exporters.jmx.config.startDelaySeconds }} +{{- end }} diff --git a/kubernetes/common/music/charts/zookeeper/templates/job-chroots.yaml b/kubernetes/common/music/charts/zookeeper/templates/job-chroots.yaml new file mode 100644 index 0000000000..38592ddeac --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/job-chroots.yaml @@ -0,0 +1,62 @@ +{{- if .Values.jobs.chroots.enabled }} +{{- $root := . }} +{{- $job := .Values.jobs.chroots }} +apiVersion: batch/v1 +kind: Job +metadata: + name: {{ template "common.fullname" . }}-chroots + annotations: + "helm.sh/hook": post-install,post-upgrade + "helm.sh/hook-weight": "-5" + "helm.sh/hook-delete-policy": hook-succeeded + labels: + app: {{ template "common.name" . }} + chart: {{ .Chart.Name }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} + component: jobs + job: chroots +spec: + activeDeadlineSeconds: {{ $job.activeDeadlineSeconds }} + backoffLimit: {{ $job.backoffLimit }} + completions: {{ $job.completions }} + parallelism: {{ $job.parallelism }} + template: + metadata: + labels: + app: {{ template "common.name" . }} + release: {{ .Release.Name }} + component: jobs + job: chroots + spec: + restartPolicy: {{ $job.restartPolicy }} + containers: + - name: main + image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}" + imagePullPolicy: {{ .Values.image.pullPolicy }} + command: + - /bin/bash + - -o + - pipefail + - -euc + {{- $port := .Values.service.ports.client.port }} + - > + sleep 15; + export SERVER={{ template "common.fullname" $root }}:{{ $port }}; + {{- range $job.config.create }} + echo '==> {{ . }}'; + echo '====> Create chroot if does not exist.'; + zkCli.sh -server {{ template "common.fullname" $root }}:{{ $port }} get {{ . }} 2>&1 >/dev/null | grep 'cZxid' + || zkCli.sh -server {{ template "common.fullname" $root }}:{{ $port }} create {{ . }} ""; + echo '====> Confirm chroot exists.'; + zkCli.sh -server {{ template "common.fullname" $root }}:{{ $port }} get {{ . }} 2>&1 >/dev/null | grep 'cZxid'; + echo '====> Chroot exists.'; + {{- end }} + env: + {{- range $key, $value := $job.env }} + - name: {{ $key | upper | replace "." "_" }} + value: {{ $value | quote }} + {{- end }} + resources: +{{ toYaml $job.resources | indent 12 }} +{{- end -}} diff --git a/kubernetes/common/music/charts/zookeeper/templates/poddisruptionbudget.yaml b/kubernetes/common/music/charts/zookeeper/templates/poddisruptionbudget.yaml new file mode 100644 index 0000000000..7a9f3fe105 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/poddisruptionbudget.yaml @@ -0,0 +1,17 @@ +apiVersion: policy/v1beta1 +kind: PodDisruptionBudget +metadata: + name: {{ template "common.fullname" . }} + labels: + app: {{ template "common.name" . }} + chart: {{ .Chart.Name }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} + component: server +spec: + selector: + matchLabels: + app: {{ template "common.name" . }} + release: {{ .Release.Name }} + component: server +{{ toYaml .Values.podDisruptionBudget | indent 2 }} diff --git a/kubernetes/common/music/charts/zookeeper/templates/service-headless.yaml b/kubernetes/common/music/charts/zookeeper/templates/service-headless.yaml new file mode 100644 index 0000000000..70ebf6013e --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/service-headless.yaml @@ -0,0 +1,21 @@ +apiVersion: v1 +kind: Service +metadata: + name: {{ template "common.fullname" . }}-headless + labels: + app: {{ template "common.name" . }} + chart: {{ .Chart.Name }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} +spec: + clusterIP: None + ports: +{{- range $key, $port := .Values.ports }} + - name: {{ $key }} + port: {{ $port.containerPort }} + targetPort: {{ $port.name }} + protocol: {{ $port.protocol }} +{{- end }} + selector: + app: {{ template "common.name" . }} + release: {{ .Release.Name }} diff --git a/kubernetes/common/music/charts/zookeeper/templates/service.yaml b/kubernetes/common/music/charts/zookeeper/templates/service.yaml new file mode 100644 index 0000000000..6ac3066ecf --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/service.yaml @@ -0,0 +1,23 @@ +apiVersion: v1 +kind: Service +metadata: + name: {{ .Values.service.name }} + labels: + app: {{ template "common.name" . }} + chart: {{ .Chart.Name }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} + annotations: +{{- with .Values.service.annotations }} +{{ toYaml . | indent 4 }} +{{- end }} +spec: + type: {{ .Values.service.type }} + ports: + {{- range $key, $value := .Values.service.ports }} + - name: {{ $key }} +{{ toYaml $value | indent 6 }} + {{- end }} + selector: + app: {{ template "common.name" . }} + release: {{ .Release.Name }} diff --git a/kubernetes/common/music/charts/zookeeper/templates/statefulset.yaml b/kubernetes/common/music/charts/zookeeper/templates/statefulset.yaml new file mode 100644 index 0000000000..135b59e2b6 --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/statefulset.yaml @@ -0,0 +1,191 @@ +apiVersion: apps/v1beta1 +kind: StatefulSet +metadata: + name: {{ template "common.fullname" . }} + labels: + app: {{ template "common.name" . }} + chart: {{ .Chart.Name }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} + component: server +spec: + podAntiAffinity: + preferredDuringSchedulingIgnoredDuringExecution: + - weight: 1 + podAffinityTerm: + labelSelector: + matchExpressions: + - key: app + operator: In + values: + - "{{ .Chart.Name }}" + serviceName: {{ template "common.fullname" . }}-headless + replicas: {{ .Values.replicaCount }} + terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }} + selector: + matchLabels: + app: {{ template "common.name" . }} + release: {{ .Release.Name }} + component: server + updateStrategy: +{{ toYaml .Values.updateStrategy | indent 4 }} + template: + metadata: + labels: + app: {{ template "common.name" . }} + release: {{ .Release.Name }} + component: server + {{- if .Values.podLabels }} + ## Custom pod labels + {{- range $key, $value := .Values.podLabels }} + {{ $key }}: {{ $value | quote }} + {{- end }} + {{- end }} + annotations: + {{- if .Values.podAnnotations }} + ## Custom pod annotations + {{- range $key, $value := .Values.podAnnotations }} + {{ $key }}: {{ $value | quote }} + {{- end }} + {{- end }} + spec: +{{- if .Values.schedulerName }} + schedulerName: "{{ .Values.schedulerName }}" +{{- end }} + securityContext: +{{ toYaml .Values.securityContext | indent 8 }} + containers: + + - name: zookeeper + image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}" + imagePullPolicy: {{ .Values.image.pullPolicy }} + command: + - /bin/bash + - -xec + - zkGenConfig.sh && exec zkServer.sh start-foreground + ports: +{{- range $key, $port := .Values.ports }} + - name: {{ $key }} +{{ toYaml $port | indent 14 }} +{{- end }} + livenessProbe: +{{ toYaml .Values.livenessProbe | indent 12 }} + readinessProbe: +{{ toYaml .Values.readinessProbe | indent 12 }} + env: + - name: ZK_REPLICAS + value: {{ .Values.replicaCount | quote }} + {{- range $key, $value := .Values.env }} + - name: {{ $key | upper | replace "." "_" }} + value: {{ $value | quote }} + {{- end }} + resources: +{{ include "common.resources" . }} + volumeMounts: + - name: zookeeper-data + mountPath: /var/lib/zookeeper + +{{- if .Values.exporters.jmx.enabled }} + - name: jmx-exporter + image: "{{ .Values.exporters.jmx.image.repository }}:{{ .Values.exporters.jmx.image.tag }}" + imagePullPolicy: {{ .Values.exporters.jmx.image.pullPolicy }} + ports: + {{- range $key, $port := .Values.exporters.jmx.ports }} + - name: {{ $key }} +{{ toYaml $port | indent 14 }} + {{- end }} + livenessProbe: +{{ toYaml .Values.exporters.jmx.livenessProbe | indent 12 }} + readinessProbe: +{{ toYaml .Values.exporters.jmx.readinessProbe | indent 12 }} + env: + - name: SERVICE_PORT + value: {{ .Values.exporters.jmx.ports.jmxxp.containerPort | quote }} + {{- with .Values.exporters.jmx.env }} + {{- range $key, $value := . }} + - name: {{ $key | upper | replace "." "_" }} + value: {{ $value | quote }} + {{- end }} + {{- end }} + resources: +{{ toYaml .Values.exporters.jmx.resources | indent 12 }} + volumeMounts: + - name: config-jmx-exporter + mountPath: /opt/jmx_exporter/config.yml + subPath: config.yml +{{- end }} + +{{- if .Values.exporters.zookeeper.enabled }} + - name: zookeeper-exporter + image: "{{ .Values.exporters.zookeeper.image.repository }}:{{ .Values.exporters.zookeeper.image.tag }}" + imagePullPolicy: {{ .Values.exporters.zookeeper.image.pullPolicy }} + args: + - -bind-addr=:{{ .Values.exporters.zookeeper.ports.zookeeperxp.containerPort }} + - -metrics-path={{ .Values.exporters.zookeeper.path }} + - -zookeeper=localhost:{{ .Values.ports.client.containerPort }} + - -log-level={{ .Values.exporters.zookeeper.config.logLevel }} + - -reset-on-scrape={{ .Values.exporters.zookeeper.config.resetOnScrape }} + ports: + {{- range $key, $port := .Values.exporters.zookeeper.ports }} + - name: {{ $key }} +{{ toYaml $port | indent 14 }} + {{- end }} + livenessProbe: +{{ toYaml .Values.exporters.zookeeper.livenessProbe | indent 12 }} + readinessProbe: +{{ toYaml .Values.exporters.zookeeper.readinessProbe | indent 12 }} + env: + {{- range $key, $value := .Values.exporters.zookeeper.env }} + - name: {{ $key | upper | replace "." "_" }} + value: {{ $value | quote }} + {{- end }} + resources: +{{ toYaml .Values.exporters.zookeeper.resources | indent 12 }} +{{- end }} + + {{- with .Values.nodeSelector }} + nodeSelector: +{{ toYaml . | indent 8 }} + {{- end }} + {{- with .Values.affinity }} + affinity: +{{ toYaml . | indent 8 }} + {{- end }} + {{- with .Values.tolerations }} + tolerations: +{{ toYaml . | indent 8 }} + {{- end }} + {{- if (or .Values.exporters.jmx.enabled (not .Values.persistence.enabled)) }} + volumes: + {{- if .Values.exporters.jmx.enabled }} + - name: config-jmx-exporter + configMap: + name: {{ .Release.Name }}-jmx-exporter + {{- end }} + {{- if not .Values.persistence.enabled }} + - name: zookeeper-data + emptyDir: {} + {{- end }} + {{- end }} + {{- if .Values.persistence.enabled }} + volumeClaimTemplates: + - metadata: + name: zookeeper-data + labels: + app: {{ .Chart.Name }} + chart: "{{ .Chart.Name }}-{{ .Chart.Version }}" + release: "{{ .Release.Name }}" + heritage: "{{ .Release.Service }}" + annotations: + volume.beta.kubernetes.io/storage-class: {{ .Values.persistence.storageClass }} + spec: + storageClassName: {{ .Values.persistence.storageClass }} + accessModes: + - {{ .Values.persistence.accessMode | quote }} + resources: + requests: + storage: {{ .Values.persistence.size | quote }} + selector: + matchLabels: + release: "{{ .Release.Name }}" + {{- end }} diff --git a/kubernetes/common/music/charts/zookeeper/templates/volumes.yaml b/kubernetes/common/music/charts/zookeeper/templates/volumes.yaml new file mode 100644 index 0000000000..b0c05fdbfd --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/templates/volumes.yaml @@ -0,0 +1,25 @@ +{{ if .Values.persistence.enabled }} +{{- $root := . -}} +{{ range $i, $e := until (atoi (quote $root.Values.replicaCount) | default 3) }} +--- +apiVersion: v1 +kind: PersistentVolume +metadata: + name: {{ $root.Release.Name }}-{{ $root.Values.service.name }}-{{ $i }} + namespace: {{ $root.Release.Namespace }} + labels: + type: {{ $root.Values.persistence.storageType }} + app: {{ $root.Values.service.name }} + chart: {{ $root.Chart.Name }}-{{ $root.Chart.Version | replace "+" "_" }} + release: {{ $root.Release.Name }} + heritage: {{ $root.Release.Service }} +spec: + capacity: + storage: {{ $root.Values.persistence.size }} + accessModes: + - {{ $root.Values.persistence.accessMode }} + hostPath: + path: {{ $root.Values.persistence.mountPath }}/{{ $root.Release.Name }}/{{ $root.Values.persistence.mountSubPath }}-{{$i}} + persistentVolumeReclaimPolicy: {{ $root.Values.persistence.volumeReclaimPolicy }} +{{ end }} +{{ end }} diff --git a/kubernetes/common/music/charts/zookeeper/values.yaml b/kubernetes/common/music/charts/zookeeper/values.yaml new file mode 100644 index 0000000000..ea02e6151e --- /dev/null +++ b/kubernetes/common/music/charts/zookeeper/values.yaml @@ -0,0 +1,284 @@ +## As weighted quorums are not supported, it is imperative that an odd number of replicas +## be chosen. Moreover, the number of replicas should be either 1, 3, 5, or 7. +## +## ref: https://github.com/kubernetes/contrib/tree/master/statefulsets/zookeeper#stateful-set +replicaCount: 3 # Desired quantity of ZooKeeper pods. This should always be (1,3,5, or 7) + +podDisruptionBudget: + maxUnavailable: 1 # Limits how many Zokeeper pods may be unavailable due to voluntary disruptions. + +terminationGracePeriodSeconds: 1800 # Duration in seconds a Zokeeper pod needs to terminate gracefully. + +## OnDelete requires you to manually delete each pod when making updates. +## This approach is at the moment safer than RollingUpdate because replication +## may be incomplete when replication source pod is killed. +## +## ref: http://blog.kubernetes.io/2017/09/kubernetes-statefulsets-daemonsets.html +updateStrategy: + type: OnDelete # Pods will only be created when you manually delete old pods. + +## refs: +## - https://github.com/kubernetes/contrib/tree/master/statefulsets/zookeeper +## - https://github.com/kubernetes/contrib/blob/master/statefulsets/zookeeper/Makefile#L1 +image: + #repository: nexus3.onap.org:10001/library/zookeeper + #tag: 3.3 + repository: gcr.io/google_samples/k8szk # Container image repository for zookeeper container. + tag: v3 # Container image tag for zookeeper container. + pullPolicy: IfNotPresent # Image pull criteria for zookeeper container. + +service: + name: zookeeper + type: ClusterIP # Exposes zookeeper on a cluster-internal IP. + annotations: {} # Arbitrary non-identifying metadata for zookeeper service. + ## AWS example for use with LoadBalancer service type. + # external-dns.alpha.kubernetes.io/hostname: zookeeper.cluster.local + # service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true" + # service.beta.kubernetes.io/aws-load-balancer-internal: "true" + ports: + client: + port: 2181 # Service port number for client port. + targetPort: client # Service target port for client port. + protocol: TCP # Service port protocol for client port. + + +ports: + client: + containerPort: 2181 # Port number for zookeeper container client port. + protocol: TCP # Protocol for zookeeper container client port. + election: + containerPort: 3888 # Port number for zookeeper container election port. + protocol: TCP # Protocol for zookeeper container election port. + server: + containerPort: 2888 # Port number for zookeeper container server port. + protocol: TCP # Protocol for zookeeper container server port. + +# Resource Limit flavor -By Default using small +flavor: large +# Segregation for Different environment (Small and Large) +resources: + small: + limits: + cpu: 1 + memory: 1Gi + requests: + cpu: 500m + memory: 500Mi + large: + limits: + cpu: 3 + memory: 2Gi + requests: + cpu: 2 + memory: 1Gi + unlimited: {} + +nodeSelector: {} # Node label-values required to run zookeeper pods. + +tolerations: [] # Node taint overrides for zookeeper pods. + +affinity: {} # Criteria by which pod label-values influence scheduling for zookeeper pods. +affinity: + podAntiAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + - topologyKey: "kubernetes.io/hostname" + labelSelector: + matchLabels: + release: zookeeper + +podAnnotations: {} # Arbitrary non-identifying metadata for zookeeper pods. + +podLabels: {} # Key/value pairs that are attached to zookeeper pods. + +livenessProbe: + exec: + command: + - zkOk.sh + initialDelaySeconds: 20 + +readinessProbe: + exec: + command: + - zkOk.sh + initialDelaySeconds: 20 + +securityContext: + fsGroup: 1000 + #runAsUser: 1000 + +persistence: + enabled: true + ## zookeeper data Persistent Volume Storage Class + ## If defined, storageClassName: <storageClass> + ## If set to "-", storageClassName: "", which disables dynamic provisioning + ## If undefined (the default) or set to null, no storageClassName spec is + ## set, choosing the default provisioner. (gp2 on AWS, standard on + ## GKE, AWS & OpenStack) + ## + volumeReclaimPolicy: Retain + accessMode: ReadWriteOnce + mountPath: /dockerdata-nfs + mountSubPath: music/zookeeper + storageType: local + storageClass: "" + size: 4Gi + +## Exporters query apps for metrics and make those metrics available for +## Prometheus to scrape. +exporters: + + jmx: + enabled: false + image: + repository: sscaling/jmx-prometheus-exporter + tag: 0.3.0 + pullPolicy: IfNotPresent + config: + lowercaseOutputName: false + rules: + - pattern: "org.apache.ZooKeeperService<name0=ReplicatedServer_id(\\d+)><>(\\w+)" + name: "zookeeper_$2" + - pattern: "org.apache.ZooKeeperService<name0=ReplicatedServer_id(\\d+), name1=replica.(\\d+)><>(\\w+)" + name: "zookeeper_$3" + labels: + replicaId: "$2" + - pattern: "org.apache.ZooKeeperService<name0=ReplicatedServer_id(\\d+), name1=replica.(\\d+), name2=(\\w+)><>(\\w+)" + name: "zookeeper_$4" + labels: + replicaId: "$2" + memberType: "$3" + - pattern: "org.apache.ZooKeeperService<name0=ReplicatedServer_id(\\d+), name1=replica.(\\d+), name2=(\\w+), name3=(\\w+)><>(\\w+)" + name: "zookeeper_$4_$5" + labels: + replicaId: "$2" + memberType: "$3" + startDelaySeconds: 30 + env: {} + resources: {} + path: /metrics + ports: + jmxxp: + containerPort: 9404 + protocol: TCP + livenessProbe: + httpGet: + path: /metrics + port: jmxxp + initialDelaySeconds: 30 + periodSeconds: 15 + timeoutSeconds: 60 + failureThreshold: 8 + successThreshold: 1 + readinessProbe: + httpGet: + path: /metrics + port: jmxxp + initialDelaySeconds: 30 + periodSeconds: 15 + timeoutSeconds: 60 + failureThreshold: 8 + successThreshold: 1 + + zookeeper: + enabled: false + image: + repository: josdotso/zookeeper-exporter + tag: v1.1.2 + pullPolicy: IfNotPresent + config: + logLevel: info + resetOnScrape: "true" + env: {} + resources: {} + path: /metrics + ports: + zookeeperxp: + containerPort: 9141 + protocol: TCP + livenessProbe: + httpGet: + path: /metrics + port: zookeeperxp + initialDelaySeconds: 30 + periodSeconds: 15 + timeoutSeconds: 60 + failureThreshold: 8 + successThreshold: 1 + readinessProbe: + httpGet: + path: /metrics + port: zookeeperxp + initialDelaySeconds: 30 + periodSeconds: 15 + timeoutSeconds: 60 + failureThreshold: 8 + successThreshold: 1 + +env: + + ## Options related to JMX exporter. + JMXAUTH: "false" + JMXDISABLE: "false" + JMXPORT: 1099 + JMXSSL: "false" + + ## The port on which the server will accept client requests. + ZK_CLIENT_PORT: 2181 + + ## The port on which the ensemble performs leader election. + ZK_ELECTION_PORT: 3888 + + ## The JVM heap size. + ZK_HEAP_SIZE: 2G + + ## The number of Ticks that an ensemble member is allowed to perform leader + ## election. + ZK_INIT_LIMIT: 5 + + ## The Log Level that for the ZooKeeper processes logger. + ## Choices are `TRACE,DEBUG,INFO,WARN,ERROR,FATAL`. + ZK_LOG_LEVEL: INFO + + ## The maximum number of concurrent client connections that + ## a server in the ensemble will accept. + ZK_MAX_CLIENT_CNXNS: 60 + + ## The maximum session timeout that the ensemble will allow a client to request. + ## Upstream default is `20 * ZK_TICK_TIME` + ZK_MAX_SESSION_TIMEOUT: 40000 + + ## The minimum session timeout that the ensemble will allow a client to request. + ## Upstream default is `2 * ZK_TICK_TIME`. + ZK_MIN_SESSION_TIMEOUT: 4000 + + ## The delay, in hours, between ZooKeeper log and snapshot cleanups. + ZK_PURGE_INTERVAL: 0 + + ## The port on which the leader will send events to followers. + ZK_SERVER_PORT: 2888 + + ## The number of snapshots that the ZooKeeper process will retain if + ## `ZK_PURGE_INTERVAL` is set to a value greater than `0`. + ZK_SNAP_RETAIN_COUNT: 3 + + ## The number of Tick by which a follower may lag behind the ensembles leader. + ZK_SYNC_LIMIT: 10 + + ## The number of wall clock ms that corresponds to a Tick for the ensembles + ## internal time. + ZK_TICK_TIME: 2000 + +jobs: + chroots: + enabled: false + activeDeadlineSeconds: 300 + backoffLimit: 5 + completions: 1 + config: + create: [] + # - /kafka + # - /ureplicator + env: [] + parallelism: 1 + resources: {} + restartPolicy: Never |