[COMMON] Use deployment for postgresql

Instead of statefulset + inner work in the container, use deployments in
order to be more reliable

Change-Id: Icf4fe1303ae3489c822558e28bb08b69af2d4970
Issue-ID: OOM-2234
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>

6 files changed, 66 insertions, 6 deletions

diff --git a/kubernetes/common/postgres/charts/pgpool/configs/pool_hba.conf b/kubernetes/common/postgres/charts/pgpool/configs/pool_hba.conf
index d8918409e8..580185c6f0 100644
--- a/kubernetes/common/postgres/charts/pgpool/configs/pool_hba.conf
+++ b/kubernetes/common/postgres/charts/pgpool/configs/pool_hba.conf
@@ -65,3 +65,4 @@
 #local   all         all                               trust
 # IPv4 local connections:
 host    all         all         0.0.0.0/0          md5
+
diff --git a/kubernetes/common/postgres/charts/pgpool/configs/pool_passwd b/kubernetes/common/postgres/charts/pgpool/configs/pool_passwd
deleted file mode 100644
index 3636d1de74..0000000000
--- a/kubernetes/common/postgres/charts/pgpool/configs/pool_passwd
+++ /dev/null
@@ -1,2 +0,0 @@
-testuser:md599e8713364988502fa6189781bcf648f
-postgres:md53175bce1d3201d16594cebf9d7eb3f9d
diff --git a/kubernetes/common/postgres/charts/pgpool/templates/deployment.yaml b/kubernetes/common/postgres/charts/pgpool/templates/deployment.yaml
index 15fa18d81d..a4b0ca8657 100644
--- a/kubernetes/common/postgres/charts/pgpool/templates/deployment.yaml
+++ b/kubernetes/common/postgres/charts/pgpool/templates/deployment.yaml
@@ -31,6 +31,33 @@ spec:
         app: {{ include "common.name" . }}
         release: {{ .Release.Name }}
     spec:
+      initContainers:
+      - name: {{ include "common.name" . }}-job
+        image: "{{.Values.repository}}/{{.Values.image}}"
+        imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+        volumeMounts:
+        - name: pgpool-pgconf
+          mountPath: /pgconf/pgpoolconfigdir
+          readOnly: false
+        - name: pgpool-pgconf-static
+          mountPath: /configdir/
+          readOnly: false
+        command:
+        - /bin/sh
+        args:
+        - -c
+        - |
+          cp /configdir/pgpool.conf   /pgconf/pgpoolconfigdir/
+          cp /configdir/pool_hba.conf /pgconf/pgpoolconfigdir/
+          pg_md5 -f /pgconf/pgpoolconfigdir/pgpool.conf --md5auth --username=${PG_USER} ${PG_PASSWORD} 
+        env:
+        - name: PG_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "common.fullname" . }}
+              key: db-user-password
+        - name: PG_USER
+          value: {{ index .Values.credentials.pgusername }}
       containers:
       - image: "{{.Values.repository}}/{{.Values.image}}"
         imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
@@ -43,7 +70,10 @@ spec:
         - name: PG_USERNAME
           value: {{.Values.credentials.pgusername}}
         - name: PG_PASSWORD
-          value: {{.Values.credentials.pgpassword}}
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "common.fullname" . }}
+              key: db-user-password
         ports:
         - containerPort: 5432
           name: pgpool
@@ -64,5 +94,7 @@ spec:
           readOnly: false
       volumes:
       - name: pgpool-pgconf
+        emptyDir: {}
+      - name: pgpool-pgconf-static
         configMap:
           name: {{ include "common.fullname" . }}-pgpool-configmap
diff --git a/kubernetes/common/postgres/charts/pgpool/templates/secrets.yaml b/kubernetes/common/postgres/charts/pgpool/templates/secrets.yaml
new file mode 100644
index 0000000000..b449faca92
--- /dev/null
+++ b/kubernetes/common/postgres/charts/pgpool/templates/secrets.yaml
@@ -0,0 +1,28 @@
+# Copyright © 2018 Amdocs, Bell Canada
+#
+# 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.
+
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+type: Opaque
+data:
+  db-user-password: {{ default "" .Values.credentials.pgpassword | b64enc | quote }}
+
diff --git a/kubernetes/common/postgres/charts/pgpool/templates/service.yaml b/kubernetes/common/postgres/charts/pgpool/templates/service.yaml
index 86442a2740..4306b264b2 100644
--- a/kubernetes/common/postgres/charts/pgpool/templates/service.yaml
+++ b/kubernetes/common/postgres/charts/pgpool/templates/service.yaml
@@ -15,11 +15,11 @@ spec:
     {{if eq .Values.service.type "NodePort" -}}
     - port: {{ .Values.service.externalPort }}
       nodePort: {{ .Values.global.nodePortPrefix | default .Values.nodePortPrefix }}{{ .Values.service.nodePort }}
-      name: {{ .Values.service.name }}
+      name: {{ .Values.service.portName }}
     {{- else -}}
     - port: {{ .Values.service.externalPort }}
       targetPort: {{ .Values.service.internalPort }}
-      name: {{ .Values.service.name }}
+      name: {{ .Values.service.portName }}
     {{- end}}
   selector:
     app: {{ include "common.name" . }}
diff --git a/kubernetes/common/postgres/charts/pgpool/values.yaml b/kubernetes/common/postgres/charts/pgpool/values.yaml
index cb732b7cd7..8ceff8f964 100644
--- a/kubernetes/common/postgres/charts/pgpool/values.yaml
+++ b/kubernetes/common/postgres/charts/pgpool/values.yaml
@@ -38,7 +38,8 @@ credentials:
   pgusername: testuser
   pgpassword: password
 service:
-  name: pgpool 
+  name: pgpool
+  portName: tcp-postgres
   type: ClusterIP
   externalPort: 5432
   internalPort: 5432