Separation db-cluster and app

cnpg-liquid/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

cnpg-liquid/Chart.yaml

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+apiVersion: v2
+name: cnpg-liquid
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

cnpg-liquid/templates/cnpg-cluster.yaml

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+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: {{ required "Cluster name required" .Values.cnpg.clusterName }}
+  annotations:
+    "helm.sh/hook": pre-install
+    "helm.sh/hook-weight": "-1"
+spec:
+  startDelay: 300
+  stopDelay: 300
+  instances: 3
+  storage:
+    size: 2Gi
+  monitoring:
+    enablePodMonitor: true
+
+  {{ if .Values.cnpg.recovery.enable }}
+  externalClusters:
+    - name: {{ required "Old cluster name required" .Values.cnpg.recovery.oldClusterName }}
+      barmanObjectStore:
+        destinationPath: {{ .Values.cnpg.recovery.oldClusterName }}
+        endpointURL: {{ .Values.s3.endpointUrl | quote }}
+        s3Credentials:
+          accessKeyId:
+            name: {{ .Values.s3.secretName | quote}}
+            key: {{ .Values.s3.accessKeyKey | quote }}
+          secretAccessKey:
+            name: {{ .Values.s3.secretName | quote}}
+            key: {{ .Values.s3.secretKeyKey | quote }}
+        wal:
+          maxParallel: 8
+
+
+  {{ end }}
+
+  bootstrap:
+    {{ if .Values.cnpg.recovery.enable }}
+    recovery:
+      source: {{ required "Old cluster name required" .Values.cnpg.recovery.oldClusterName }}
+    {{ end }}
+
+  {{ if .Values.cnpg.backup.enable }}
+  backup:
+    barmanObjectStore:
+      destinationPath: {{ .Values.cnpg.backup.destinationPath }}
+      endpointURL: {{ .Values.s3.endpointUrl | quote }}
+      s3Credentials:
+        accessKeyId:
+          name: {{ .Values.s3.secretName | quote}}
+          key: {{ .Values.s3.accessKeyKey | quote }}
+        secretAccessKey:
+          name: {{ .Values.s3.secretName | quote}}
+          key: {{ .Values.s3.secretKeyKey | quote }}
+      wal:
+        compression: bzip2
+        maxParallel: 8
+      data:
+        compression: bzip2
+    retentionPolicy: "7d"
+  {{ end }}

cnpg-liquid/values.yaml

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+s3:
+  endpointUrl: https://storage.yandexcloud.net
+  secretName: s3-credentials
+  accessKeyKey: ACCESS_KEY_ID
+  secretKeyKey: ACCESS_SECRET_KEY
+cnpg:
+  clusterName: liquid-db
+  backup:
+    enable: true
+    destinationPath: "s3://liquid-code/backup"
+  recovery:
+    enable: false
+    oldClusterName: liquid-db
+    sourcePath: "s3://liquid-code/backup"