Add 'additionalEnvVars' to the chart (#303)

* Add 'additionalEnv' to the chart

Signed-off-by: Steven <[email protected]>

charts/cloudnative-pg/README.md

@@ -27,6 +27,7 @@ CloudNativePG Operator Helm Chart
 | Key | Type | Default | Description |
 |-----|------|---------|-------------|
 | additionalArgs | list | `[]` | Additinal arguments to be added to the operator's args list. |
+| additionalEnv | list | `[]` | Array containing extra environment variables which can be templated. See [values.yaml](./values.yaml) for examples.
 | affinity | object | `{}` | Affinity for the operator to be installed. |
 | commonAnnotations | object | `{}` | Annotations to be added to all other resources. |
 | config | object | `{"create":true,"data":{},"name":"cnpg-controller-manager-config","secret":false}` | Operator configuration. |

charts/cloudnative-pg/templates/deployment.yaml

@@ -72,6 +72,9 @@ spec:
               fieldPath: metadata.namespace
         - name: MONITORING_QUERIES_CONFIGMAP
           value: "{{ .Values.monitoringQueriesConfigMap.name }}"
+        {{- if .Values.additionalEnv }}
+        {{- tpl (.Values.additionalEnvVars | toYaml) . | nindent 8 }}
+        {{- end }}
         image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
         imagePullPolicy: {{ .Values.image.pullPolicy }}
         livenessProbe:

charts/cloudnative-pg/values.yaml

@@ -66,6 +66,14 @@ config:
 # -- Additinal arguments to be added to the operator's args list.
 additionalArgs: []
 
+# -- Array containing extra environment variables which can be templated.
+# For example:
+#  - name: RELEASE_NAME
+#    value: "{{ .Release.Name }}"
+#  - name: MY_VAR
+#    value: "mySpecialKey"
+additionalEnv: []
+
 serviceAccount:
   # -- Specifies whether the service account should be created.
   create: true