Add Alertmanager dashboard to Grafana

This patch set adds a new Alertmanager dashboard to Grafana.  Note
that a new configmap is created for this instead of using the
same configmap which includes all the dashboards. Using the same
configmap will eventually run into issue with configmap size limitation.

Change-Id: I10561c0b0b464c3b67d4a738f9f2cb70ef601b3d

grafana/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v7.4.5
 description: OpenStack-Helm Grafana
 name: grafana
-version: 0.1.8
+version: 0.1.9
 home: https://grafana.com/
 sources:
   - https://github.com/grafana/grafana

grafana/templates/configmap-dashboards-alertmanager.yaml

@@ -0,0 +1,25 @@
+{{/*
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/}}
+
+{{- if .Values.manifests.configmap_dashboards_alertmanager }}
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: grafana-dashboards-alertmanager
+data:
+{{ range $key, $value := .Values.conf.dashboards_alertmanager }}
+  {{$key}}.json: {{ $value | toJson }}
+{{ end }}
+{{- end }}

grafana/templates/deployment.yaml

@@ -125,6 +125,13 @@ spec:
               mountPath: /etc/grafana/dashboards/{{$key}}.json
               subPath: {{$key}}.json
             {{- end }}
+{{- if .Values.manifests.configmap_dashboards_alertmanager }}
+            {{- range $key, $value := .Values.conf.dashboards_alertmanager }}
+            - name: grafana-dashboards-alertmanager
+              mountPath: /etc/grafana/dashboards/{{$key}}.json
+              subPath: {{$key}}.json
+            {{- end }}
+{{- end }}
 {{- dict "enabled" $envAll.Values.manifests.certificates "name" $envAll.Values.endpoints.oslo_db.auth.admin.secret.tls.internal "path" "/etc/mysql/certs" | include "helm-toolkit.snippets.tls_volume_mount" | indent 12 }}
 {{ if $mounts_grafana.volumeMounts }}{{ toYaml $mounts_grafana.volumeMounts | indent 12 }}{{ end }}
       volumes:
@@ -150,6 +157,12 @@ spec:
           configMap:
             name: grafana-dashboards
             defaultMode: 0555
+{{- if .Values.manifests.configmap_dashboards_alertmanager }}
+        - name: grafana-dashboards-alertmanager
+          configMap:
+            name: grafana-dashboards-alertmanager
+            defaultMode: 0555
+{{- end }}
         - name: data
           emptyDir: {}
 {{- dict "enabled" $envAll.Values.manifests.certificates "name" $envAll.Values.endpoints.oslo_db.auth.admin.secret.tls.internal | include "helm-toolkit.snippets.tls_volume" | indent 8 }}

grafana/values.yaml

@@ -367,6 +367,7 @@ manifests:
   configmap_bin: true
   configmap_etc: true
   configmap_dashboards: true
+  configmap_dashboards_alertmanager: false
   deployment: true
   ingress: true
   helm_tests: true
@@ -485,4 +486,5 @@ conf:
     grafana_net:
       url: https://grafana.net
   dashboards: {}
+  dashboards_alertmanager: {}
 ...

releasenotes/notes/grafana.yaml

@@ -9,4 +9,5 @@ grafana:
   - 0.1.6 Enable TLS for Grafana ingress path
   - 0.1.7 Update Grafana version and Selenium script
   - 0.1.8 Use full image ref for docker official images
+  - 0.1.9 Add Alertmanager dashboard to Grafana
 ...