update mongo db blueprint (#1106)

* examples: update README for mongo db example

* modify mongo blueprint to make it work when the release name is mongodb

* integration tests were failing

* This is better approach to handle this issue

* update the readme with note when using existing blueprint

examples/stable/mongodb/README.md

@@ -52,7 +52,13 @@ $ kanctl create profile s3compliant --access-key <aws-access-key-id> \
 
 The command will configure a location where artifacts resulting from Kanister data operations such as backup should go. This is stored as a profiles.cr.kanister.io CustomResource (CR) which is then referenced in Kanister ActionSets. Every ActionSet requires a Profile reference to complete the action. This CR (profiles.cr.kanister.io) can be shared between Kanister-enabled application instances.
 
+**NOTE:**
 
+If you have installed MongoDB chart using existing mongo secret by setting paramter `--set auth.existingSecret=<mongo-secret-name>` you will need to modify the secret name in the blueprint `mongo-blueprint.yaml` at following places:
+```bash
+actions.backup.phases[0].objects.mongosecret.name: <mongo-secret-name>
+actions.restore.phases[0].objects.mongosecret.name: <mongo-secret-name>
+```
 ### Create Blueprint
 Create Blueprint in the same namespace as the controller
 

examples/stable/mongodb/blueprint-v2/mongo-blueprint.yaml

@@ -16,7 +16,7 @@ actions:
       objects:
         mongosecret:
           kind: Secret
-          name: '{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb'
+          name: '{{ .StatefulSet.Name }}'
           namespace: "{{ .StatefulSet.Namespace }}"
       args:
         namespace: "{{ .StatefulSet.Namespace }}"
@@ -29,7 +29,7 @@ actions:
           - pipefail
           - -c
           - |
-            host='{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-0.{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
+            host='{{ .StatefulSet.Name }}-0.{{ .StatefulSet.Name }}-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
             dbPassword='{{ index .Phases.takeConsistentBackup.Secrets.mongosecret.Data "mongodb-root-password" | toString }}'
             dump_cmd="mongodump --oplog --gzip --archive --host ${host} -u root -p ${dbPassword}"
             backup_file_path='rs_backup.gz'
@@ -45,7 +45,7 @@ actions:
       objects:
         mongosecret:
           kind: Secret
-          name: '{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb'
+          name: '{{ .StatefulSet.Name }}'
           namespace: "{{ .StatefulSet.Namespace }}"
       args:
         namespace: "{{ .StatefulSet.Namespace }}"
@@ -58,7 +58,7 @@ actions:
           - pipefail
           - -c
           - |
-            host='{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-0.{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
+            host='{{ .StatefulSet.Name }}-0.{{ .StatefulSet.Name }}-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
             dbPassword='{{ index .Phases.pullFromStore.Secrets.mongosecret.Data "mongodb-root-password" | toString }}'
             restore_cmd="mongorestore --gzip --archive --oplogReplay --drop --host ${host} -u root -p ${dbPassword}"
             backup_file_path='rs_backup.gz'

examples/stable/mongodb/mongo-blueprint.yaml

@@ -14,7 +14,7 @@ actions:
       objects:
         mongosecret:
           kind: Secret
-          name: '{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb'
+          name: '{{ .StatefulSet.Name }}'
           namespace: "{{ .StatefulSet.Namespace }}"
       args:
         namespace: "{{ .StatefulSet.Namespace }}"
@@ -27,7 +27,7 @@ actions:
           - pipefail
           - -c
           - |
-            host='{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-0.{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
+            host='{{ .StatefulSet.Name }}-0.{{ .StatefulSet.Name }}-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
             dbPassword='{{ index .Phases.takeConsistentBackup.Secrets.mongosecret.Data "mongodb-root-password" | toString }}'
             dump_cmd="mongodump --oplog --gzip --archive --host ${host} -u root -p ${dbPassword}"
             ${dump_cmd} | kando location push --profile '{{ toJson .Profile }}' --path '/mongodb-replicaset-backups/{{ .StatefulSet.Name }}/{{ toDate "2006-01-02T15:04:05.999999999Z07:00" .Time  | date "2006-01-02T15-04-05" }}/rs_backup.gz' -
@@ -40,7 +40,7 @@ actions:
       objects:
         mongosecret:
           kind: Secret
-          name: '{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb'
+          name: '{{ .StatefulSet.Name }}'
           namespace: "{{ .StatefulSet.Namespace }}"
       args:
         namespace: "{{ .StatefulSet.Namespace }}"
@@ -53,7 +53,7 @@ actions:
           - pipefail
           - -c
           - |
-            host='{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-0.{{ index .Object.metadata.labels "app.kubernetes.io/instance" }}-mongodb-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
+            host='{{ .StatefulSet.Name }}-0.{{ .StatefulSet.Name }}-headless.{{ .StatefulSet.Namespace }}.svc.cluster.local'
             dbPassword='{{ index .Phases.pullFromBlobStore.Secrets.mongosecret.Data "mongodb-root-password" | toString }}'
             restore_cmd="mongorestore --gzip --archive --oplogReplay --drop --host ${host} -u root -p ${dbPassword}"
             kando location pull --profile '{{ toJson .Profile }}' --path '{{ .ArtifactsIn.cloudObject.KeyValue.path }}' - | ${restore_cmd}