postgres: migrate to backups via the barman plugin

postgres/config/backup/objectstore.yaml

@@ -0,0 +1,15 @@
+apiVersion: barmancloud.cnpg.io/v1
+kind: ObjectStore
+metadata:
+  name: truenas-s3
+spec:
+  configuration:
+    destinationPath: "s3://weyma-talos-shared-pgsql-new/"
+    endpointURL: http://10.105.15.20:9000
+    s3Credentials:
+      accessKeyId:
+        key: s3AccessKey
+        name: s3-backup-creds
+      secretAccessKey:
+        key: s3SecretKey
+        name: s3-backup-creds

postgres/config/backup/scheduled_backup.yaml

@@ -6,4 +6,7 @@ spec:
   schedule: "0 0 4 * * *"
   backupOwnerReference: self
   cluster:
-    name: weyma-pgsql
+    name: weyma-pgsql
+  method: plugin
+  pluginConfiguration:
+    name: barman-cloud.cloudnative-pg.io

postgres/config/clusters/main.yaml

@@ -11,17 +11,10 @@ spec:
     size: 50Gi
     storageClass: rook-ceph-block
 
-  backup:
-    barmanObjectStore:
-      destinationPath: "s3://weyma-talos-shared-pgsql-new/"
-      endpointURL: http://10.105.15.20:9000
-      s3Credentials:
-        accessKeyId:
-          key: s3AccessKey
-          name: s3-backup-creds
-        secretAccessKey:
-          key: s3SecretKey
-          name: s3-backup-creds
+  plugins:
+    - name: barman-cloud.cloudnative-pg.io
+      parameters:
+        barmanObjectName: truenas-s3
 
   inheritedMetadata:
     labels: