[bitnami/redis] Added extraEnvVars for metrics container (#9482)

* Added extraEnvVars for metrics container

Signed-off-by: Abhimanyu Saharan <desk.abhimanyu@gmail.com>

* Bumped chart version from 16.5.4 to 16.6.0

Signed-off-by: Abhimanyu Saharan <desk.abhimanyu@gmail.com>

bitnami/redis/Chart.yaml

@@ -24,4 +24,4 @@ maintainers:
 name: redis
 sources:
   - https://github.com/bitnami/bitnami-docker-redis
-version: 16.5.5
+version: 16.6.0

bitnami/redis/README.md

@@ -423,6 +423,7 @@ The command removes all the Kubernetes components associated with the chart and
 | `metrics.command`                            | Override default metrics container init command (useful when using custom images)                | `[]`                     |
 | `metrics.redisTargetHost`                    | A way to specify an alternative Redis™ hostname                                            | `localhost`              |
 | `metrics.extraArgs`                          | Extra arguments for Redis™ exporter, for example:                                          | `{}`                     |
+| `metrics.extraEnvVars`                       | Array with extra environment variables to add to Redis™ exporter                           | `[]`                     |
 | `metrics.containerSecurityContext.enabled`   | Enabled Redis™ exporter containers' Security Context                                       | `true`                   |
 | `metrics.containerSecurityContext.runAsUser` | Set Redis™ exporter containers' Security Context runAsUser                                 | `1001`                   |
 | `metrics.extraVolumes`                       | Optionally specify extra list of additional volumes for the Redis™ metrics sidecar         | `[]`                     |

bitnami/redis/templates/master/application.yaml

@@ -287,6 +287,9 @@ spec:
             - name: REDIS_EXPORTER_TLS_CA_CERT_FILE
               value: {{ template "redis.tlsCACert" . }}
             {{- end }}
+            {{- if .Values.metrics.extraEnvVars }}
+            {{- include "common.tplvalues.render" (dict "value" .Values.metrics.extraEnvVars "context" $) | nindent 12 }}
+            {{- end }}
           ports:
             - name: metrics
               containerPort: 9121

bitnami/redis/values.yaml

@@ -1281,6 +1281,13 @@ metrics:
   ##   check-keys: myKey,myOtherKey
   ##
   extraArgs: {}
+  ## @param metrics.extraEnvVars Array with extra environment variables to add to Redis™ exporter
+  ## e.g:
+  ## extraEnvVars:
+  ##   - name: FOO
+  ##     value: "bar"
+  ##
+  extraEnvVars: []
   ## Configure Container Security Context
   ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/#set-the-security-context-for-a-pod
   ## @param metrics.containerSecurityContext.enabled Enabled Redis™ exporter containers' Security Context