Support init containers in helm chart

charts/kafka-lag-exporter/templates/000-ServiceAccount.yaml

@@ -2,10 +2,14 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
+  {{- if .Values.serviceAccount.nameOverride }}
+  name: {{ .Values.serviceAccount.nameOverride }}
+  {{- else }}
   name: {{ include "kafka-lag-exporter.fullname" . }}-serviceaccount
+  {{- end }}
   labels:
     app.kubernetes.io/name: {{ include "kafka-lag-exporter.name" . }}
     helm.sh/chart: {{ include "kafka-lag-exporter.chart" . }}
     app.kubernetes.io/instance: {{ .Release.Name }}
     app.kubernetes.io/managed-by: {{ .Release.Service }}
-{{- end }}
+{{- end }}

charts/kafka-lag-exporter/templates/040-Deployment.yaml

@@ -24,8 +24,12 @@ spec:
       {{- end }}
     spec:
       {{- if or .Values.watchers.strimzi .Values.serviceAccount.create }}
+      {{- if .Values.serviceAccount.nameOverride }}
+      serviceAccountName: {{ .Values.serviceAccount.nameOverride }}
+      {{- else }}
       serviceAccountName: {{ include "kafka-lag-exporter.fullname" . }}-serviceaccount
       {{- end }}
+      {{- end }}
       containers:
         - name: {{ .Chart.Name }}
           {{- if .Values.image.digest }}
@@ -34,7 +38,10 @@ spec:
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
           {{- end }}
           imagePullPolicy: {{ .Values.image.pullPolicy }}
-          env: []
+          {{- if .Values.env }}
+          env:
+{{ toYaml .Values.env | indent 10 }}
+          {{- end }}
           ports:
             - name: http
               containerPort: {{ .Values.service.port }}
@@ -60,8 +67,15 @@ spec:
               subPath: {{ .subPath }}
               readOnly: {{ .readOnly }}
           {{- end }}
+          {{- range .Values.extraMounts }}
+            - name: {{ .name }}
+              mountPath: {{ .mountPath }}
+          {{- end }}
           resources:
 {{ toYaml .Values.resources | indent 12 }}
+    {{- with .Values.initContainers }}
+      initContainers: {{ toYaml . | nindent 8 }}
+    {{- end }}
     {{- with .Values.nodeSelector }}
       nodeSelector:
 {{ toYaml . | indent 8 }}
@@ -83,3 +97,7 @@ spec:
           configMap:
             name: {{ .configMap }}
       {{- end }}
+      {{- range .Values.extraMounts }}
+        - name: {{ .name }}
+{{ toYaml .mount | indent 10 }}
+      {{- end }}

charts/kafka-lag-exporter/values.yaml

@@ -43,6 +43,9 @@ watchers:
 ## Otherwise, the default service account for the namespace will be used.
 serviceAccount:
   create: false
+  ## The name of the service account will be generated based on the release name, use nameOverride to override
+  ## with a static name.
+  # nameOverride: my-serviceaccount
 
 ## You can use regex to control the metrics exposed by Prometheus endpoint.
 ## Any metric that matches one of the regex in the whitelist will be exposed.
@@ -80,6 +83,11 @@ securityContext: {}
   # runAsNonRoot: true
   # capabilities:
   #   drop: ["all"]
+initContainers: []
+## Init containers to be added to the pod.
+# - name: my-init-container
+#   image: busybox:latest
+#   command: ['sh', '-c', 'echo hello']
 service:
   type: ClusterIP
   port: 8000
@@ -99,6 +107,15 @@ extraConfigmapMounts: []
   #   mountPath: /etc/pki/ca-trust/extracted/java/cacerts
   #   subPath: ca-bundle.jks
   #   readOnly: true
+extraMounts: []
+  # - name: my-secrets
+  #   mount:
+  #     emptyDir:
+  #       medium: Memory
+  #   mountPath: /var/run/my-secrets
+env: {}
+  # - name: JAVA_OPTS
+  #   value: "-Djava.security.auth.login.config=/var/run/my-secrets/jaasConfig"
 podAnnotations: {}
   # foo: bar