[COMMON] Use common secret template in dgbuilder

Taken into account how "easy" it would be to modify the dgbuilder
which is written in JavaScript (which is not my mother tongue to say
the least) let's try to remove hardcoded passwords from config files
without modifying the application container itself.

In order to achieve this:

1) Remove createReleaseDir.sh script from the container as it is never
used and contains a ton of passwords

2) Replace all sensitive values in config files with references to
respective environment variables

3) Introduce init container that will run envsubst command on config
files and copy them from ConfigMap value to the new volume which is
backed by tmpfs so that the plain text passwords are never written to
the disk

For now all the hardcoded values are still there to minimize the risk
of breaking the deployment but step by step they will be removed in
next commits.

Issue-ID: OOM-2247
Change-Id: I5a428e3415713857084ba6aaa6be9b04a8eb8c0f
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>

3 files changed, 41 insertions, 40 deletions

diff --git a/kubernetes/common/dgbuilder/templates/configmap.yaml b/kubernetes/common/dgbuilder/templates/configmap.yaml
index 24f61b5487..828818c68d 100644
--- a/kubernetes/common/dgbuilder/templates/configmap.yaml
+++ b/kubernetes/common/dgbuilder/templates/configmap.yaml
@@ -24,16 +24,3 @@ metadata:
     heritage: {{ .Release.Service }}
 data:
 {{ tpl (.Files.Glob "resources/config/*").AsConfig . | indent 2 }}
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ include "common.fullname" . }}-scripts
-  namespace: {{ include "common.namespace" . }}
-  labels:
-    app: {{ include "common.name" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ include "common.release" . }}
-    heritage: {{ .Release.Service }}
-data:
-{{ tpl (.Files.Glob "resources/scripts/*").AsConfig . | indent 2 }}
diff --git a/kubernetes/common/dgbuilder/templates/deployment.yaml b/kubernetes/common/dgbuilder/templates/deployment.yaml
index 495c4c6ab6..b3f0ab05a3 100644
--- a/kubernetes/common/dgbuilder/templates/deployment.yaml
+++ b/kubernetes/common/dgbuilder/templates/deployment.yaml
@@ -32,6 +32,40 @@ spec:
     spec:
       initContainers:
       - command:
+        - sh
+        args:
+        - -c
+        - "cd /config-input && for PFILE in `ls -1 .`; do envsubst <${PFILE} >/config/${PFILE}; done"
+        env:
+        - name: DB_USER
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "db-user-creds" "key" "login") | indent 10 }}
+        - name: DB_PASSWORD
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "db-user-creds" "key" "password") | indent 10 }}
+        - name: HTTP_USER
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "http-user-creds" "key" "login") | indent 10 }}
+        - name: HTTP_PASSWORD
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "http-user-creds" "key" "password") | indent 10 }}
+        - name: HTTP_ADMIN_USER
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "admin-creds" "key" "login") | indent 10 }}
+        - name: HTTP_ADMIN_PASSWORD
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "admin-creds" "key" "password") | indent 10 }}
+        - name: HTTP_NODE_USER
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "node-creds" "key" "login") | indent 10 }}
+        - name: HTTP_NODE_PASSWORD
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "node-creds" "key" "password") | indent 10 }}
+        - name: REST_CONF_USER
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "restconf-creds" "key" "login") | indent 10 }}
+        - name: REST_CONF_PASSWORD
+          {{- include "common.secret.envFromSecret" (dict "global" . "uid" "restconf-creds" "key" "password") | indent 10 }}
+        volumeMounts:
+        - mountPath: /config-input
+          name: config-input
+        - mountPath: /config
+          name: config
+        image: "{{ .Values.global.envsubstImage }}"
+        imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
+        name: {{ include "common.name" . }}-update-config
+      - command:
         - /root/ready.py
         args:
         - --container-name
@@ -59,11 +93,6 @@ spec:
             initialDelaySeconds: {{ .Values.readiness.initialDelaySeconds }}
             periodSeconds: {{ .Values.readiness.periodSeconds }}
           env:
-          - name: MYSQL_ROOT_PASSWORD
-            valueFrom:
-              secretKeyRef:
-                name: {{ template "common.fullname" . }}
-                key: db-root-password
           - name: SDNC_CONFIG_DIR
             value: /opt/onap/sdnc/data/properties
           volumeMounts:
@@ -79,10 +108,7 @@ spec:
           - name: config
             mountPath: /opt/onap/ccsdk/dgbuilder/svclogic/svclogic.properties
             subPath: svclogic.properties
-          - name: scripts
-            mountPath: /opt/onap/ccsdk/dgbuilder/createReleaseDir.sh
-            subPath: createReleaseDir.sh
-          - name: scripts
+          - name: config
             mountPath: /opt/onap/ccsdk/dgbuilder/releases/sdnc1.0/customSettings.js
             subPath: customSettings.js
           resources:
@@ -99,12 +125,11 @@ spec:
         - name: localtime
           hostPath:
             path: /etc/localtime
-        - name: config
+        - name: config-input
           configMap:
             name: {{ include "common.fullname" . }}-config
-        - name: scripts
-          configMap:
-            name: {{ include "common.fullname" . }}-scripts
-            defaultMode: 0755
+        - name: config
+          emptyDir:
+            medium: Memory
       imagePullSecrets:
       - name: "{{ include "common.namespace" . }}-docker-registry-key"
diff --git a/kubernetes/common/dgbuilder/templates/secrets.yaml b/kubernetes/common/dgbuilder/templates/secrets.yaml
index e00d7cfc03..c9a409fdca 100644
--- a/kubernetes/common/dgbuilder/templates/secrets.yaml
+++ b/kubernetes/common/dgbuilder/templates/secrets.yaml
@@ -1,4 +1,5 @@
 # Copyright © 2018 AT&T, Amdocs, Bell Canada
+# Copyright © 2020 Samsung Electronics
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -12,16 +13,4 @@
 # 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.fullname" . }}
-    chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
-    release: {{ include "common.release" . }}
-    heritage: {{ .Release.Service }}
-type: Opaque
-data:
-  db-root-password: {{ .Values.config.dbRootPassword | b64enc | quote }}
\ No newline at end of file
+{{ include "common.secret" . }}