Reapply "feat: add backups for postgres"

This reverts commit d5d242601f.

postgres/index.ts

@@ -35,7 +35,7 @@ export class PostgresCluster extends Construct {
       namespace: options.namespace,
     });
 
-    const destinationPath = "s3://rihla-backups/";
+    const destinationPath = "s3://homelab-backups/";
 
     const endpointURL = options.backupR2EndpointURL;
     const barmanConfiguration = {
@@ -321,7 +321,7 @@ export class PostgresCluster extends Construct {
         },
         spec: {
           instances: 3,
-          maxSyncReplicas: 0,
+          maxSyncReplicas: 1,
           primaryUpdateStrategy: "unsupervised",
           certificates: {
             serverCASecret: certNames.server,
@@ -346,12 +346,47 @@ export class PostgresCluster extends Construct {
           ],
           enableSuperuserAccess: false,
           bootstrap: {
-            initdb: {
+            recovery: {
+              source: "clusterBackup",
               database: "postgres",
+              owner: options.primaryUser,
               secret: {
                 name: options.initSecretName,
               },
-              postInitSQL: [`CREATE USER ${options.primaryUser} SUPERUSER;`],
+            },
+          },
+          externalClusters: [
+            {
+              name: "clusterBackup",
+              plugin: {
+                name: "barman-cloud.cloudnative-pg.io",
+                parameters: {
+                  barmanObjectName: "r2-postgres-backup-store",
+                  serverName: "postgres-cluster",
+                },
+              },
+            },
+          ],
+          managed: {
+            services: {
+              disabledDefaultServices: ["ro", "r"],
+              additional: [
+                {
+                  selectorType: "rw",
+                  serviceTemplate: {
+                    metadata: {
+                      name: "postgres-cluster",
+                      annotations: {
+                        "external-dns.alpha.kubernetes.io/hostname":
+                          "postgres.dogar.dev",
+                      },
+                    },
+                    spec: {
+                      type: "LoadBalancer",
+                    },
+                  },
+                },
+              ],
             },
           },
           storage: {