cloudnative-pg feat: introduce WAL archive volume

Closes #10

Signed-off-by: Armando Ruocco [email protected]

Aug 02 '22 08:08 armru

/test

Aug 02 '22 09:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2781171804

Aug 02 '22 09:08 cnpg-bot

I have made some minor changes in the preferred location. I suggest that the "pg_wal" volume is a sibling of the PGDATA one. What is missing now is the invocation of the initdb parameter with --waldir option (see https://www.postgresql.org/docs/current/app-initdb.html)

Aug 02 '22 13:08 gbartolini

/test

Aug 02 '22 14:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2782889739

Aug 02 '22 14:08 cnpg-bot

/test

Aug 02 '22 16:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2783635174

Aug 02 '22 16:08 cnpg-bot

/test

Aug 02 '22 20:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2785051386

Aug 02 '22 20:08 cnpg-bot

I think we need to improve the DetectPVCs function too, because we can't reattach a PVC of a data directory if we don't have the corresponding WAL volume.

Aug 03 '22 09:08 leonardoce

$ k get pvc -w
NAME                       STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
cluster-example-1          Bound    pvc-a419cd79-d644-4234-82fa-fd3f6dacdd14   1Gi        RWO            standard       4s
pg-wal-cluster-example-1   Bound    pvc-4e07f615-f3ac-4d08-bff1-d935e09c9cec   1Gi        RWO            standard       4s
cluster-example-1          Bound    pvc-a419cd79-d644-4234-82fa-fd3f6dacdd14   1Gi        RWO            standard       11s

I think our users are used to have the resources created by Cluster having the same prefix. This is what happens usually in Kubernetes.

Perhaps we could have cluster-example-1-wal as a name, instead of pg-wal-cluster-example-1

Aug 03 '22 09:08 leonardoce

We should think about the meaning of the DanglingPVC, ResizingPVC, InitializingPVC, HealthyPVC fields too. In this moment ResizingPVC is considering the WAL PVCs too, while the other ones are not including it.

Aug 03 '22 09:08 leonardoce

/test

Aug 04 '22 08:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2795289801

Aug 04 '22 08:08 cnpg-bot

/test

Aug 04 '22 14:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2797278319

Aug 04 '22 14:08 cnpg-bot

/test

Aug 05 '22 12:08 armru

@armru, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2803610447

Aug 05 '22 12:08 cnpg-bot

/test

Aug 10 '22 14:08 jsilvela

@jsilvela, here's the link to the E2E on CNPG workflow run: https://github.com/cloudnative-pg/cloudnative-pg/actions/runs/2833398328

Aug 10 '22 14:08 cnpg-bot