reintroduce postgres operator example database pods (#233)

Signed-off-by: Jeff McCoy <[email protected]>

examples/postgres-operator/README.md

@@ -2,8 +2,6 @@
 
 This example demonstrates deploying a performant and highly available PostgreSQL database to a Zarf airgap cluster. It uses Zalando's [postgres-operator](https://github.com/zalando/postgres-operator) and provides the Postgres Operator UI and a deployment of PGAdmin for demo purposes.
 
-:warning: NOTE: It looks like this example doesn't currently quite work. The operators come up but it doesn't deploy a postgres database like it used to. We are working on a fix.
-
 ## Tool Choice
 
 After looking at several alternatives, Zalando's postgres operator felt like the best choice. Other tools that were close runners-up were the postgres-operator by [CrunchyData](https://github.com/CrunchyData/postgres-operator) and [KubeDB](https://github.com/kubedb/operator).

examples/postgres-operator/manifests/postgres-cluster.yaml

@@ -0,0 +1,28 @@
+apiVersion: "acid.zalan.do/v1"
+kind: "postgresql"
+metadata:
+  name: "acid-zarf-test"
+  namespace: "postgres-operator"
+  labels:
+    team: acid
+spec:
+  teamId: "acid"
+  postgresql:
+    version: "13"
+  numberOfInstances: 3
+  enableConnectionPooler: true
+  volume:
+    size: "2Gi"
+  users:
+    zarf: []
+  databases:
+    zarf: zarf
+  enableLogicalBackup: true
+  logicalBackupSchedule: "*/2 * * * *"
+  resources:
+    requests:
+      cpu: 100m
+      memory: 100Mi
+    limits:
+      cpu: 500m
+      memory: 500Mi

examples/postgres-operator/manifests/postgres-operator.yaml

@@ -54,6 +54,8 @@ spec:
       runAsNonRoot: true
       readOnlyRootFilesystem: true
       allowPrivilegeEscalation: false
+    podServiceAccount:
+      name: "zalando-postgres-operator"
 ---
 apiVersion: v1
 kind: ConfigMap
@@ -70,3 +72,11 @@ data:
   WALG_DISABLE_S3_SSE: "true"
   USE_WALG_RESTORE: "false"
   AWS_S3_FORCE_PATH_STYLE: "true"
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata: 
+  name: zalando-postgres-operator
+  namespace: postgres-operator
+imagePullSecrets: 
+  - name: private-registry

examples/postgres-operator/zarf.yaml

@@ -9,6 +9,11 @@ components:
     required: true
     manifests: manifests
 
+    scripts:
+      retry: true
+      after:
+        - "kubectl patch serviceaccount default -p '{\"imagePullSecrets\": [{\"name\": \"private-registry\"}]}' -n postgres-operator"
+
     charts:
       - name: postgres-operator
         url: https://opensource.zalando.com/postgres-operator/charts/postgres-operator
@@ -26,12 +31,14 @@ components:
         url: https://repo1.dso.mil/platform-one/big-bang/apps/application-utilities/minio.git
         version: 4.2.3-bb.1
 
+
     images:
       - registry.opensource.zalan.do/acid/postgres-operator:v1.7.0
       - registry.opensource.zalan.do/acid/spilo-13:2.1-p1
       - registry.opensource.zalan.do/acid/logical-backup:v1.7.0
       - registry.opensource.zalan.do/acid/pgbouncer:master-18
       - registry.opensource.zalan.do/acid/postgres-operator-ui:v1.7.0
       - docker.io/dpage/pgadmin4:5.5
+      - docker.io/rancher/pause:3.1
       - registry1.dso.mil/ironbank/opensource/minio/operator:v4.2.3
       - registry1.dso.mil/ironbank/opensource/minio/minio:RELEASE.2021-08-31T05-46-54Z