Elasticsearch helm chart

elasticsearch/.helmignore

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+# 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

elasticsearch/Chart.yaml

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+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: v1
+description: A Helm chart for Elasticsearch
+name: elasticsearch
+version: 0.1.0
+maintainers:
+  - name: OpenStack-Helm Authors

elasticsearch/README.md

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+# Elasticsearch Helm Chart
+
+This chart installs a working version of Elasticsearch cluster on Kubernetes. 
+
+### Installation
+
+Values.yaml contains configuration for Elasticsearch cluster. 
+
+#### Note: Minimum of 2 Master Nodes are required for elasticsearch cluster 
+
+```
+helm install elasticsearch
+
+```
+### To verify the helm deployment was successful:
+
+```
+helm list
+```
+
+### To confirm all pods are up and running:
+
+```
+kubectl get pods
+
+```
+
+### To view list of services
+
+```
+kubectl get svc
+```
+
+```
+elasticsearch-discovery   10.99.148.252    <none>        9300/TCP                             47m
+elasticsearch-logging     10.105.222.126   <pending>     9200:31070/TCP                       47m
+```
+
+### Test elasticsearch functionality:
+
+#### From any host within cluster..
+
+1) Check if Elasticsearch cluster is up
+```
+curl http://10.105.222.126:9200
+```
+```
+curl http://10.105.222.126:9200/_cluster/health?pretty
+```
+
+2) Store data manually using APIs
+```
+curl -XPUT 'http://10.105.222.126:9200/blog/user/renmak' -d \
+'{ "name" : "Dilbert Brown" }'
+```
+```
+curl -XPUT 'http://10.105.222.126:9200/blog/post/1' -d \
+'{ "user":"renmak", "title":"how to test ES"}'
+```
+3) Retrive data manually using APIs
+```
+curl -XGET 'http://10.105.222.126:9200/blog/user/renmak?pretty=true'
+
+curl -XGET 'http://10.105.222.126:9200/blog/post/1?pretty=true'
+
+curl -XGET 'http://10.105.222.126:9200/blog/post/_search?q=user:renmak&pretty=true'
+
+curl -XGET 'http://10.105.222.126:9200/_search?q=*renmak&pretty=true'
+
+```
+

elasticsearch/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 | trimSuffix "-" -}}
+{{- 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 | trimSuffix "-" -}}
+{{- end -}}

elasticsearch/templates/deployment-es-client.yaml

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+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: {{ .Values.labels.es_client.name }}
+  labels:
+    component: {{ .Values.labels.common.component }}
+    role: {{ .Values.labels.es_client.role }}
+spec:
+  replicas: {{ .Values.replicas.es_client }}
+  template:
+    metadata:
+      labels:
+        component: {{ .Values.labels.common.component }}
+        role: {{ .Values.labels.es_client.role }}
+      annotations:
+        # Elasticsearch uses a hybrid mmapfs / niofs directory by default to
+        # store its indices. The default operating system limits on mmap counts
+        # is likely to be too low, which may result in out of memory exceptions,
+        # so we use vm.max_map_count=262144 to increase that value.
+        pod.beta.kubernetes.io/init-containers: '[
+          {
+          "name": "sysctl",
+            "image": "busybox",
+            "imagePullPolicy": "IfNotPresent",
+            "command": ["sysctl", "-w", "vm.max_map_count=262144"],
+            "securityContext": {
+              "privileged": true
+            }
+          }
+        ]'  
+    spec:
+      containers:
+      - name: {{ .Values.labels.es_client.name }}
+        securityContext:
+          privileged: false
+          capabilities:
+            add:
+              - IPC_LOCK
+              - SYS_RESOURCE
+        image: {{ .Values.images.elasticsearch }}
+        imagePullPolicy: {{ .Values.images.pullPolicy }}
+        {{- if .Values.resources.enabled }}
+        resources:
+          limits:
+            cpu: {{ .Values.resources.limits.cpu }}
+            memory: {{ .Values.resources.limits.memory }}
+          requests:
+            cpu: {{ .Values.resources.requests.cpu }}
+            memory: {{ .Values.resources.requests.memory }}
+        {{- end }}
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: "CLUSTER_NAME"
+          value: {{ .Values.cluster_name }}
+        - name: NODE_MASTER
+          value: "false"
+        - name: NODE_DATA
+          value: "false"
+        - name: HTTP_ENABLE
+          value: "true"
+        - name: "ES_JAVA_OPTS"
+          value: {{ .Values.es_java_opts.es_client }}
+        ports:
+        - containerPort: {{ .Values.network.client.port }}
+          name: {{ .Values.network.client.name }}
+          protocol: {{ .Values.network.client.protocol }}
+        - containerPort: {{ .Values.network.discovery.port}} 
+          name: {{ .Values.network.discovery.name }}
+          protocol: {{ .Values.network.discovery.protocol }}
+        volumeMounts:
+        - name: storage
+          mountPath: /data
+      volumes:
+      - name: storage
+        emptyDir: {}

elasticsearch/templates/deployment-es-data.yaml

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+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: {{ .Values.labels.es_data.name }}
+  labels:
+    component: {{ .Values.labels.common.component }}
+    role: {{ .Values.labels.es_data.role }}
+spec:
+  replicas: {{ .Values.replicas.es_data }}
+  template:
+    metadata:
+      labels:
+        component: {{ .Values.labels.common.component }}
+        role: {{ .Values.labels.es_data.role }}
+      annotations:
+        pod.beta.kubernetes.io/init-containers: '[
+          {
+          "name": "sysctl",
+            "image": "busybox",
+            "imagePullPolicy": "IfNotPresent",
+            "command": ["sysctl", "-w", "vm.max_map_count=262144"],
+            "securityContext": {
+              "privileged": true
+            }
+          }
+        ]'
+    spec:
+      containers:
+      - name: {{ .Values.labels.es_data.name }}
+        securityContext:
+          privileged: false
+          capabilities:
+            add:
+              - IPC_LOCK
+              - SYS_RESOURCE
+        image: {{ .Values.images.elasticsearch }}
+        imagePullPolicy: {{ .Values.images.pullPolicy }}
+        {{- if .Values.resources.enabled }}
+        resources:
+          limits:
+            cpu: {{ .Values.resources.limits.cpu }}
+            memory: {{ .Values.resources.limits.memory }}
+          requests:
+            cpu: {{ .Values.resources.requests.cpu }}
+            memory: {{ .Values.resources.requests.memory }}
+        {{- end }}
+        env:
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: "CLUSTER_NAME"
+          value: {{ .Values.cluster_name }}
+        - name: NODE_MASTER
+          value: "false"
+        - name: NODE_INGEST
+          value: "false"
+        - name: HTTP_ENABLE
+          value: "false"
+        - name: "ES_JAVA_OPTS"
+          value: {{ .Values.es_java_opts.es_data }}
+        ports:
+        - containerPort: {{ .Values.network.discovery.port}} 
+          name: {{ .Values.network.discovery.name}} 
+          protocol: {{ .Values.network.discovery.protocol}} 
+        volumeMounts:
+        - name: storage
+          mountPath: /data
+      volumes:
+        - name: storage
+          emptyDir: {}