gerrit: charts and app configuration

Change-Id: If4f05f749719d6ba0e2ced8da563699bc6fbc4c0
diff --git a/charts/gerrit-replica/templates/git-backend.deployment.yaml b/charts/gerrit-replica/templates/git-backend.deployment.yaml
new file mode 100644
index 0000000..037bcb9
--- /dev/null
+++ b/charts/gerrit-replica/templates/git-backend.deployment.yaml
@@ -0,0 +1,168 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Release.Name }}-git-backend-deployment
+  labels:
+    app.kubernetes.io/component: git-backend
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  replicas: {{ .Values.gitBackend.replicas }}
+  strategy:
+    rollingUpdate:
+      maxSurge: {{ .Values.gitBackend.maxSurge }}
+      maxUnavailable: {{ .Values.gitBackend.maxUnavailable }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: git-backend
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/component: git-backend
+        app.kubernetes.io/instance: {{ .Release.Name }}
+        chart: {{ template "gerrit-replica.chart" . }}
+        heritage: {{ .Release.Service }}
+        release: {{ .Release.Name }}
+        {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 8 }}
+        {{- end }}
+        {{- if .Values.gitBackend.additionalPodLabels }}
+{{ toYaml .Values.gitBackend.additionalPodLabels  | indent 8 }}
+        {{- end }}
+      annotations:
+        chartRevision: "{{ .Release.Revision }}"
+    spec:
+      {{- with .Values.gitBackend.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.gitBackend.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.gitBackend.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.gitBackend.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        fsGroup: 100
+      {{ if .Values.images.registry.ImagePullSecret.name -}}
+      imagePullSecrets:
+      - name: {{ .Values.images.registry.ImagePullSecret.name }}
+      {{- range .Values.images.additionalImagePullSecrets }}
+      - name: {{ . }}
+      {{- end }}
+      {{- end }}
+      initContainers:
+      {{- if and .Values.nfsWorkaround.enabled .Values.nfsWorkaround.chownOnStartup }}
+      - name: nfs-init
+        image: {{ .Values.images.busybox.registry -}}/busybox:{{- .Values.images.busybox.tag }}
+        command:
+        - sh
+        - -c
+        args:
+        - |
+          chown 1000:100 /var/mnt/logs
+          chown 1000:100 /var/mnt/git
+        env:
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        volumeMounts:
+        - name: logs
+          subPathExpr: "gerrit-replica/$(POD_NAME)"
+          mountPath: "/var/mnt/logs"
+        - name: git-repositories
+          mountPath: "/var/mnt/git"
+        {{- if .Values.nfsWorkaround.idDomain }}
+        - name: nfs-config
+          mountPath: "/etc/idmapd.conf"
+          subPath: idmapd.conf
+        {{- end }}
+      {{- end }}
+      containers:
+      - name: apache-git-http-backend
+        imagePullPolicy: {{ .Values.images.imagePullPolicy }}
+        image: {{ template "registry" . }}{{ .Values.gitBackend.image }}:{{ .Values.images.version }}
+        env:
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        ports:
+        - name: http-port
+          containerPort: 80
+        resources:
+{{ toYaml .Values.gitBackend.resources | indent 10 }}
+        livenessProbe:
+          tcpSocket:
+            port: http-port
+{{ toYaml .Values.gitBackend.livenessProbe | indent 10 }}
+        readinessProbe:
+          tcpSocket:
+            port: http-port
+{{ toYaml .Values.gitBackend.readinessProbe | indent 10 }}
+        volumeMounts:
+        - name: git-repositories
+          mountPath: "/var/gerrit/git"
+        - name: logs
+          subPathExpr: "apache-git-http-backend/$(POD_NAME)"
+          mountPath: "/var/log/apache2"
+        {{- if and .Values.nfsWorkaround.enabled .Values.nfsWorkaround.idDomain }}
+        - name: nfs-config
+          mountPath: "/etc/idmapd.conf"
+          subPath: idmapd.conf
+        {{- end }}
+        - name: git-backend-secret
+          readOnly: true
+          subPath: .htpasswd
+          mountPath: "/var/apache/credentials/.htpasswd"
+      {{ if .Values.istio.enabled -}}
+      - name: istio-proxy
+        image: auto
+        lifecycle:
+          preStop:
+            exec:
+              command:
+              - "/bin/sh"
+              - "-c"
+              - "while [ $(netstat -plunt | grep tcp | grep -v envoy | wc -l | xargs) -ne 0 ]; do sleep 1; done"
+      {{- end }}
+      volumes:
+      - name: git-repositories
+        persistentVolumeClaim:
+          {{- if .Values.gitRepositoryStorage.externalPVC.use }}
+          claimName: {{ .Values.gitRepositoryStorage.externalPVC.name }}
+          {{- else }}
+          claimName: {{ .Release.Name }}-git-repositories-pvc
+          {{- end }}
+      - name: git-backend-secret
+        secret:
+          secretName: {{ .Release.Name }}-git-backend-secret
+      - name: logs
+        {{ if .Values.logStorage.enabled -}}
+        persistentVolumeClaim:
+          {{- if .Values.logStorage.externalPVC.use }}
+          claimName: {{ .Values.logStorage.externalPVC.name }}
+          {{- else }}
+          claimName: {{ .Release.Name }}-log-pvc
+          {{- end }}
+        {{ else -}}
+        emptyDir: {}
+        {{- end }}
+      {{- if and .Values.nfsWorkaround.enabled .Values.nfsWorkaround.idDomain }}
+      - name: nfs-config
+        configMap:
+          name: {{ .Release.Name }}-nfs-configmap
+      {{- end }}