[incubator/elasticsearch] Optionally expose http (#3213)

Declares a value for exposing port 9200 for master and data pods and
sets it to `false`. This allows for downstream users to open
elasticsearch http port for monitoring or other purposes. We use datadog for our
monitoring and the agent pod expects port 9200 to be open so that it can
get and send metrics at the container level.

incubator/elasticsearch/Chart.yaml

@@ -1,6 +1,6 @@
 name: elasticsearch
 home: https://www.elastic.co/products/elasticsearch
-version: 0.4.4
+version: 0.4.5
 description: Flexible and powerful open source, distributed real-time search and analytics
   engine.
 icon: https://static-www.elastic.co/assets/blteb1c97719574938d/logo-elastic-elasticsearch-lt.svg

incubator/elasticsearch/README.md

@@ -69,6 +69,7 @@ The following tables lists the configurable parameters of the elasticsearch char
 | `client.podAnnotations`              | Client Deployment annotations                                       | `{}`                                 |
 | `client.serviceAnnotations`          | Client Service annotations                                          | `{}`                                 |
 | `client.serviceType`                 | Client service type                                                 | `ClusterIP`                          |
+| `master.exposeHttp`                 | Expose http port 9200 on master Pods for monitoring, etc           | `false`                              |
 | `master.name`                        | Master component name                                               | `master`                             |
 | `master.replicas`                    | Master node replicas (deployment)                                   | `2`                                  |
 | `master.resources`                   | Master node resources requests & limits                             | `{} - cpu limit must be an integer`  |
@@ -80,6 +81,7 @@ The following tables lists the configurable parameters of the elasticsearch char
 | `master.persistence.size`            | Master persistent volume size                                       | `4Gi`                                |
 | `master.persistence.storageClass`    | Master persistent volume Class                                      | `nil`                                |
 | `master.persistence.accessMode`      | Master persistent Access Mode                                       | `ReadWriteOnce`                      |
+| `data.exposeHttp`                   | Expose http port 9200 on data Pods for monitoring, etc              | `false`                              |
 | `data.replicas`                      | Data node replicas (statefulset)                                    | `3`                                  |
 | `data.resources`                     | Data node resources requests & limits                               | `{} - cpu limit must be an integer`  |
 | `data.heapSize`                      | Data node heap size                                                 | `1536m`                              |

incubator/elasticsearch/templates/data-statefulset.yaml

@@ -96,6 +96,10 @@ spec:
         ports:
         - containerPort: 9300
           name: transport
+{{ if .Values.data.exposeHttp }}
+        - containerPort: 9200
+          name: http
+{{ end }}
         resources:
 {{ toYaml .Values.data.resources | indent 12 }}
         readinessProbe:

incubator/elasticsearch/templates/master-statefulset.yaml

@@ -107,6 +107,10 @@ spec:
         ports:
         - containerPort: 9300
           name: transport
+{{ if .Values.master.exposeHttp }}
+        - containerPort: 9200
+          name: http
+{{ end }}
         volumeMounts:
         - mountPath: /usr/share/elasticsearch/data
           name: data

incubator/elasticsearch/values.yaml

@@ -42,6 +42,7 @@ client:
 
 master:
   name: master
+  exposeHttp: false
   replicas: 3
   heapSize: "512m"
   persistence:
@@ -65,6 +66,7 @@ master:
 
 data:
   name: data
+  exposeHttp: false
   replicas: 2
   heapSize: "1536m"
   persistence: