Added support for existing rabbitmq password secret (#14958)

Signed-off-by: Jonny Ford <jonnyford1@gmail.com>

stable/prometheus-rabbitmq-exporter/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Rabbitmq metrics exporter for prometheus
 name: prometheus-rabbitmq-exporter
-version: 0.5.0
+version: 0.5.1
 appVersion: v0.29.0
 home: https://github.com/kbudde/rabbitmq_exporter
 sources:

stable/prometheus-rabbitmq-exporter/README.md

@@ -54,6 +54,7 @@ The following table lists the configurable parameters and their default values.
 | `rabbitmq.url`           | rabbitmq management url                                                | `http://myrabbit:15672`   |
 | `rabbitmq.user`          | rabbitmq user login                                                    | `guest`                   |
 | `rabbitmq.password`      | rabbitmq password login                                                | `guest`                   |
+| `rabbitmq.existingPasswordSecret` | existing secret name containing password key                  | `~`                       |
 | `rabbitmq.capabilities`  | comma-separated list of capabilities supported by the RabbitMQ server  | `bert,no_sort`            |
 | `rabbitmq.include_queues`| regex queue filter. just matching names are exported                   | `.*`                      |
 | `rabbitmq.skip_queues`   | regex, matching queue names are not exported                           | `^$`                      |
@@ -65,10 +66,10 @@ The following table lists the configurable parameters and their default values.
 | `rabbitmq.timeout`       | timeout in seconds for retrieving data from management plugin          | `30`                      |
 | `rabbitmq.max_queues`    | max number of queues before we drop metrics (disabled if set to 0)     | `0`                       |
 | `annotations`            | pod annotations for easier discovery                                   | {}                        |
-| `prometheus.monitor.enabled` | Set this to `true` to create ServiceMonitor for Prometheus operator | `false` | 
-| `prometheus.monitor.additionalLabels` | Additional labels that can be used so ServiceMonitor will be discovered by Prometheus | {} | 
-| `prometheus.monitor.interval` | Interval at which Prometheus Operator scrapes exporter | `15s` | 
-| `prometheus.monitor.namespace` | 	Selector to select which namespaces the Endpoints objects are discovered from. | [] | 
+| `prometheus.monitor.enabled` | Set this to `true` to create ServiceMonitor for Prometheus operator | `false` |
+| `prometheus.monitor.additionalLabels` | Additional labels that can be used so ServiceMonitor will be discovered by Prometheus | {} |
+| `prometheus.monitor.interval` | Interval at which Prometheus Operator scrapes exporter | `15s` |
+| `prometheus.monitor.namespace` | 	Selector to select which namespaces the Endpoints objects are discovered from. | [] |
 
 For more information please refer to the [rabbitmq_exporter](https://github.com/kbudde/rabbitmq_exporter) documentation.
 

stable/prometheus-rabbitmq-exporter/templates/deployment.yaml

@@ -30,8 +30,16 @@ spec:
               value: "{{ .Values.rabbitmq.url }}"
             - name: RABBIT_USER
               value: "{{ .Values.rabbitmq.user }}"
+            {{- if .Values.rabbitmq.existingPasswordSecret }}
+            - name: RABBIT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name:  "{{ .Values.rabbitmq.existingPasswordSecret }}"
+                  key: password
+            {{- else }}
             - name: RABBIT_PASSWORD
               value: "{{ .Values.rabbitmq.password }}"
+            {{- end }}
             - name: PUBLISH_PORT
               value: "{{ .Values.service.internalPort }}"
             - name: LOG_LEVEL

stable/prometheus-rabbitmq-exporter/values.yaml

@@ -33,6 +33,8 @@ rabbitmq:
   url: http://myrabbit:15672
   user: guest
   password: guest
+  # If existingPasswordSecret is set then password is ignored
+  existingPasswordSecret: ~
   capabilities: bert,no_sort
   include_queues: ".*"
   include_vhost: ".*"