[alertmanager] Add additional configuration options.

charts/alertmanager/Chart.yaml

@@ -6,7 +6,7 @@ icon: https://raw.githubusercontent.com/prometheus/prometheus.github.io/master/a
 sources:
   - https://github.com/prometheus/alertmanager
 type: application
-version: 1.1.0
+version: 1.2.0
 appVersion: v0.25.0
 kubeVersion: ">=1.19.0-0"
 keywords:

charts/alertmanager/templates/services.yaml

@@ -31,6 +31,9 @@ spec:
       {{- if (and (eq .Values.service.type "NodePort") .Values.service.nodePort) }}
       nodePort: {{ .Values.service.nodePort }}
       {{- end }}
+    {{- with .Values.service.extraPorts }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
   selector:
     {{- include "alertmanager.selectorLabels" . | nindent 4 }}
 ---
@@ -53,13 +56,16 @@ spec:
       name: http
     {{- if or (gt (int .Values.replicaCount) 1) (.Values.additionalPeers) }}
     - port: {{ .Values.service.clusterPort }}
-      targetPort: {{ .Values.service.clusterPort }}
+      targetPort: clusterpeer-tcp
       protocol: TCP
       name: cluster-tcp
     - port: {{ .Values.service.clusterPort }}
-      targetPort: {{ .Values.service.clusterPort }}
+      targetPort: clusterpeer-udp
       protocol: UDP
       name: cluster-udp
     {{- end }}
+    {{- with .Values.service.extraPorts }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
   selector:
     {{- include "alertmanager.selectorLabels" . | nindent 4 }}

charts/alertmanager/templates/statefulset.yaml

@@ -97,9 +97,20 @@ spec:
         - name: {{ .Chart.Name }}-{{ .Values.configmapReload.name }}
           image: "{{ .Values.configmapReload.image.repository }}:{{ .Values.configmapReload.image.tag }}"
           imagePullPolicy: "{{ .Values.configmapReload.image.pullPolicy }}"
+          {{- with .Values.configmapReload.extraEnv }}
+          env:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
           args:
+            {{- if and (hasKey .Values.configmapReload.extraArgs "config-file" | not) (hasKey .Values.configmapReload.extraArgs "watched-dir" | not)  }}
             - --watched-dir=/etc/alertmanager
+            {{- end }}
+            {{- if not (hasKey .Values.configmapReload.extraArgs "reload-url") }}
             - --reload-url=http://127.0.0.1:9093/-/reload
+            {{- end }}
+            {{- range $key, $value := .Values.configmapReload.extraArgs }}
+            - --{{ $key }}={{ $value }}
+            {{- end }}
           resources:
             {{- toYaml .Values.configmapReload.resources | nindent 12 }}
           {{- with .Values.configmapReload.containerPort }}
@@ -109,6 +120,9 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /etc/alertmanager
+            {{- if .Values.configmapReload.extraVolumeMounts }}
+            {{- toYaml .Values.configmapReload.extraVolumeMounts | nindent 12 }}
+            {{- end }}
         {{- end }}
         - name: {{ .Chart.Name }}
           securityContext:
@@ -130,7 +144,9 @@ spec:
           {{- end }}
           args:
             - --storage.path=/alertmanager
+            {{- if not (hasKey .Values.extraArgs "config.file") }}
             - --config.file=/etc/alertmanager/alertmanager.yml
+            {{- end }}
             {{- if or (gt (int .Values.replicaCount) 1) (.Values.additionalPeers) }}
             - --cluster.advertise-address=[$(POD_IP)]:{{ $svcClusterPort }}
             - --cluster.listen-address=0.0.0.0:{{ $svcClusterPort }}
@@ -153,6 +169,14 @@ spec:
             - name: http
               containerPort: 9093
               protocol: TCP
+            {{- if or (gt (int .Values.replicaCount) 1) (.Values.additionalPeers) }}
+            - name: clusterpeer-tcp
+              containerPort: {{ $svcClusterPort }}
+              protocol: TCP
+            - name: clusterpeer-udp
+              containerPort: {{ $svcClusterPort }}
+              protocol: UDP
+            {{- end }}
           livenessProbe:
             {{- toYaml .Values.livenessProbe | nindent 12 }}
           readinessProbe:

charts/alertmanager/values.yaml

@@ -107,6 +107,9 @@ service:
   # if you want to force a specific nodePort. Must be use with service.type=NodePort
   # nodePort:
 
+  # Optionally specify extra list of additional ports exposed on both services
+  extraPorts: []
+
 ingress:
   enabled: false
   className: ""
@@ -245,6 +248,19 @@ configmapReload:
   ##
   resources: {}
 
+  extraArgs: {}
+
+  ## Optionally specify extra list of additional volumeMounts
+  extraVolumeMounts: []
+    # - name: extras
+    #   mountPath: /usr/share/extras
+    #   readOnly: true
+
+  ## Optionally specify extra environment variables to add to alertmanager container
+  extraEnv: []
+    # - name: FOO
+    #   value: BAR
+
 templates: {}
 #   alertmanager.tmpl: |-