[prometheus-mysql-exporter] Implement config.extraArgs to be able to …

…define any cmdline argument (#5010)

* Implement config.extraArgs to be able to define all cmdline arguments

Signed-off-by: festeveira <f.esteveira@hotmail.com>

* Update values.yaml

Signed-off-by: André Bauer <monotek@users.noreply.github.com>

---------

Signed-off-by: festeveira <f.esteveira@hotmail.com>
Signed-off-by: André Bauer <monotek@users.noreply.github.com>
Co-authored-by: André Bauer <monotek@users.noreply.github.com>

charts/prometheus-mysql-exporter/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: A Helm chart for prometheus mysql exporter with cloudsqlproxy
 name: prometheus-mysql-exporter
-version: 2.7.0
+version: 2.8.0
 home: https://github.com/prometheus/mysqld_exporter
 appVersion: v0.16.0
 sources:

charts/prometheus-mysql-exporter/templates/deployment.yaml

@@ -53,6 +53,9 @@ spec:
           {{- if .Values.config.logFormat }}
             - "--log.format={{ .Values.config.logFormat }}"
           {{- end}}
+          {{-  if .Values.config.extraArgs  }}
+          {{- .Values.config.extraArgs | toYaml | nindent 12 }}
+          {{-  end  }}
           {{- with .Values.collectors }}
           {{- range $index, $element := . }}
           {{- if and (typeIs "bool" $element) $element }}

charts/prometheus-mysql-exporter/values.yaml

@@ -122,10 +122,13 @@ annotations:
   prometheus.io/path: "/metrics"
   prometheus.io/port: "9104"
 
-config: {}
+config:
   # Allow to set specifc options on the exporter
   # logLevel: info
   # logFormat: "logger:stderr"
+  #
+  # extra arguments as a list of strings
+  extraArgs: []
 
 collectors: {}
   # auto_increment.columns: false