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pgData Volume Auto-Grow KUTTL test
Adds a simple KUTTL E2E test for the pgData volume auto-grow feature. This test performs one volume expansion and verifies the appropriate annotation was set and Event was triggered. Issue: PGO-1282
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‎testing/kuttl/e2e-other/autogrow-volume/00-assert.yaml

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# Ensure that the default StorageClass supports VolumeExpansion
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apiVersion: storage.k8s.io/v1
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kind: StorageClass
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metadata:
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annotations:
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storageclass.kubernetes.io/is-default-class: "true"
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allowVolumeExpansion: true

‎testing/kuttl/e2e-other/autogrow-volume/01-create.yaml

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apiVersion: kuttl.dev/v1beta1
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kind: TestStep
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apply:
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- files/01-create-cluster.yaml
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assert:
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- files/01-cluster-and-pvc-created.yaml

‎testing/kuttl/e2e-other/autogrow-volume/02-add-data.yaml

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apiVersion: kuttl.dev/v1beta1
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kind: TestStep
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apply:
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- files/02-create-data.yaml
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assert:
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- files/02-create-data-completed.yaml

‎testing/kuttl/e2e-other/autogrow-volume/03-assert.yaml

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---
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# Check that annotation is set
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apiVersion: v1
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kind: Pod
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metadata:
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labels:
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postgres-operator.crunchydata.com/cluster: auto-grow-volume
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postgres-operator.crunchydata.com/data: postgres
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postgres-operator.crunchydata.com/instance-set: instance1
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postgres-operator.crunchydata.com/patroni: auto-grow-volume-ha
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annotations:
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suggested-pgdata-pvc-size: 1461Mi

‎testing/kuttl/e2e-other/autogrow-volume/04-assert.yaml

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# We know that the PVC sizes have changed so now we can check that they have been
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# updated to have the expected size
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---
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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labels:
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postgres-operator.crunchydata.com/cluster: auto-grow-volume
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postgres-operator.crunchydata.com/instance-set: instance1
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spec:
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resources:
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requests:
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storage: 1461Mi
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status:
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accessModes:
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- ReadWriteOnce
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capacity:
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storage: 2Gi
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phase: Bound

‎testing/kuttl/e2e-other/autogrow-volume/05-check-event.yaml

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---
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apiVersion: kuttl.dev/v1beta1
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kind: TestStep
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commands:
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# Verify expected event has occurred
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- script: |
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EVENT=$(
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kubectl get events --namespace="${NAMESPACE}" \
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--field-selector reason="VolumeAutoGrow" --output=jsonpath={.items..message}
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)
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if [[ "${EVENT}" != "pgData volume expansion to 1461Mi requested for auto-grow-volume/instance1." ]]; then exit 1; fi

‎testing/kuttl/e2e-other/autogrow-volume/README.md

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### AutoGrow Volume
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* 00: Assert the storage class allows volume expansion
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* 01: Create and verify PostgresCluster and PVC
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* 02: Add data to trigger growth and verify Job completes
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* 03: Verify annotation on the instance Pod
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* 04: Verify the PVC request has been set and the PVC has grown
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* 05: Verify the expansion request Event has been created
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Note: This Event should be created between steps 03 and 04 but is checked at the end for timing purposes.

‎testing/kuttl/e2e-other/autogrow-volume/files/01-cluster-and-pvc-created.yaml

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apiVersion: postgres-operator.crunchydata.com/v1beta1
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kind: PostgresCluster
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metadata:
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name: auto-grow-volume
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status:
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instances:
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- name: instance1
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readyReplicas: 1
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replicas: 1
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updatedReplicas: 1
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---
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apiVersion: v1
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kind: PersistentVolumeClaim
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metadata:
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labels:
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postgres-operator.crunchydata.com/cluster: auto-grow-volume
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postgres-operator.crunchydata.com/instance-set: instance1
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spec:
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resources:
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requests:
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storage: 1Gi
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status:
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accessModes:
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- ReadWriteOnce
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capacity:
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storage: 1Gi
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phase: Bound

‎testing/kuttl/e2e-other/autogrow-volume/files/01-create-cluster.yaml

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apiVersion: postgres-operator.crunchydata.com/v1beta1
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kind: PostgresCluster
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metadata:
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name: auto-grow-volume
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spec:
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postgresVersion: ${KUTTL_PG_VERSION}
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instances:
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- name: instance1
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dataVolumeClaimSpec:
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accessModes:
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- "ReadWriteOnce"
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resources:
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requests:
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storage: 1Gi
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limits:
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storage: 2Gi
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backups:
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pgbackrest:
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repos:
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- name: repo1
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volume:
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volumeClaimSpec:
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accessModes:
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- "ReadWriteOnce"
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resources:
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requests:
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storage: 1Gi

‎testing/kuttl/e2e-other/autogrow-volume/files/02-create-data-completed.yaml

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---
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apiVersion: batch/v1
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kind: Job
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metadata:
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name: create-data
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status:
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succeeded: 1

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