[kibana] Always set server.host to the docker default

kibana/README.md

@@ -50,6 +50,7 @@ helm install --name kibana elastic/kibana --version 7.1.1 --set imageTag=7.1.1
 | `imagePullPolicy`         | The Kubernetes [imagePullPolicy](https://kubernetes.io/docs/concepts/containers/images/#updating-images) value                                                                                                                                                                                                                                                 | `IfNotPresent`                                                                                                            |
 | `resources`               | Allows you to set the [resources](https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/) for the statefulset                                                                                                                                                                                                                   | `requests.cpu: 100m`<br>`requests.memory: 2Gi`<br>`limits.cpu: 1000m`<br>`limits.memory: 2Gi`                             |
 | `protocol`                | The protocol that will be used for the readinessProbe. Change this to `https` if you have `server.ssl.enabled: true` set                                                                                                                                                                                                                                       | `http`                                                                                                                    |
+| `serverHost`              | The [`server.host`](https://www.elastic.co/guide/en/kibana/current/settings.html) Kibana setting. This is set explicitly so that the default always matches what comes with the docker image.                                                                                                                                                                  | `0.0.0.0`                                                                                                                 |
 | `healthCheckPath`         | The path used for the readinessProbe to check that Kibana is ready                                                                                                                                                                                                                                                                                             | `/app/kibana`                                                                                                             |
 | `kibanaConfig`            | Allows you to add any config files in `/usr/share/kibana/config/` such as `kibana.yml`. See [values.yaml](./values.yaml) for an example of the formatting.                                                                                                                                                                                                     | `{}`                                                                                                                      |
 | `podSecurityContext`      | Allows you to set the [securityContext](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod) for the pod                                                                                                                                                                                             | `{}`                                                                                                                      |

kibana/examples/default/test/goss.yaml

@@ -12,3 +12,9 @@ http:
   http://helm-kibana-default-kibana:5601/app/kibana:
     status: 200
     timeout: 2000
+
+port:
+  tcp:5601:
+    listening: true
+    ip:
+    - '0.0.0.0'

kibana/examples/security/security.yml

@@ -34,3 +34,9 @@ secretMounts:
   - name: kibana-certificates
     secretName: kibana-certificates
     path: /usr/share/kibana/config/certs/kibana
+
+port:
+  tcp:5601:
+    listening: true
+    ip:
+    - '0.0.0.0'

kibana/templates/deployment.yaml

@@ -72,6 +72,8 @@ spec:
           - name: ELASTICSEARCH_HOSTS
             value: "{{ .Values.elasticsearchHosts }}"
           {{- end }}
+          - name: SERVER_HOST
+            value: "{{ .Values.serverHost }}"
 {{- if .Values.extraEnvs }}
 {{ toYaml .Values.extraEnvs | indent 10 }}
 {{- end }}

kibana/tests/kibana_test.py

@@ -31,6 +31,9 @@ def test_defaults():
     assert c['env'][0]['name'] == 'ELASTICSEARCH_HOSTS'
     assert c['env'][0]['value'] == elasticsearchHosts
 
+    assert c['env'][1]['name'] == 'SERVER_HOST'
+    assert c['env'][1]['value'] == '0.0.0.0'
+
     assert 'http "/app/kibana"' in c['readinessProbe']['exec']['command'][-1]
 
     # Empty customizable defaults
@@ -291,3 +294,14 @@ def test_adding_a_nodePort():
     r = helm_template(config)
 
     assert r['service'][name]['spec']['ports'][0]['nodePort'] == 30001
+
+def test_override_the_serverHost():
+    config = '''
+    serverHost: "localhost"
+    '''
+
+    r = helm_template(config)
+
+    c = r['deployment'][name]['spec']['template']['spec']['containers'][0]
+    assert c['env'][1]['name'] == 'SERVER_HOST'
+    assert c['env'][1]['value'] == 'localhost'

kibana/values.yaml

@@ -34,6 +34,8 @@ resources:
 
 protocol: http
 
+serverHost: "0.0.0.0"
+
 healthCheckPath: "/app/kibana"
 
 # Allows you to add any config files in /usr/share/kibana/config/