[mariadb] Add probes for exporter

Implement readiness/liveness probes for exporter

Change-Id: I7e73872dd35b8e6adf67d585e7d4d9250eca70c3

mariadb/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v10.6.7
 description: OpenStack-Helm MariaDB
 name: mariadb
-version: 0.2.65
+version: 0.2.66
 home: https://mariadb.com/kb/en/
 icon: http://badges.mariadb.org/mariadb-badge-180x60.png
 sources:

mariadb/templates/statefulset.yaml

@@ -28,6 +28,11 @@ exec:
     - -t
     - liveness
 {{- end }}
+{{- define "exporterProbeTemplate" }}
+httpGet:
+    path: /metrics
+    port: {{ tuple "prometheus_mysql_exporter" "internal" "metrics" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
+{{- end }}
 
 {{- if (.Values.global).subchart_release_name }}
 {{- $_ := set . "deployment_name" .Chart.Name }}
@@ -266,6 +271,8 @@ spec:
 {{ tuple $envAll "prometheus_mysql_exporter" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ dict "envAll" $envAll "application" "server" "container" "exporter" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.prometheus_mysql_exporter | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+{{ dict "envAll" . "component" "server" "container" "mariadb_exporter" "type" "readiness" "probeTemplate" (include "exporterProbeTemplate" $envAll | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 }}
+{{ dict "envAll" . "component" "server" "container" "mariadb_exporter" "type" "liveness" "probeTemplate" (include "exporterProbeTemplate" $envAll | fromYaml) | include "helm-toolkit.snippets.kubernetes_probe" | indent 10 }}
           command:
             - /tmp/mysqld-exporter.sh
           ports:

mariadb/values.yaml

@@ -76,6 +76,19 @@ pod:
             initialDelaySeconds: 120
             periodSeconds: 30
             timeoutSeconds: 15
+      mariadb_exporter:
+        readiness:
+          enabled: true
+          params:
+            initialDelaySeconds: 5
+            periodSeconds: 60
+            timeoutSeconds: 10
+        liveness:
+          enabled: true
+          params:
+            initialDelaySeconds: 15
+            periodSeconds: 60
+            timeoutSeconds: 10
   security_context:
     server:
       pod:

releasenotes/notes/mariadb.yaml

@@ -81,4 +81,5 @@ mariadb:
   - 0.2.63 Use service ip for endpoint discovery
   - 0.2.64 Add terminationGracePeriodSeconds
   - 0.2.65 Allow to use default storage class
+  - 0.2.66 Add probes for exporter
 ...