Issues with configuring backup against S3 storage

PostgreSQL Percona Operator for PostgreSQL
1

Description:

We have trouble configuring backup against a local MinIO instance. When creating the cluster, the cluster is successfully being created, but the operator reports ERROR unable to create stanza and when trying to run a on-demand backup, nothing happens and the status of backup resource is Starting.

Currently running OpenShift 4.15.

Steps to Reproduce:

  1. Create cluster resource with the pgbackrest parameters against local MinIO instance.
  2. Create a pg-backup resource to trigger on-demand backup.
  3. Status for pg-backup resource is Starting forever.

Version:

v.2.4.0

Logs:

Log from operator:

2024-11-12T17:23:01.313Z        INFO    Waiting for backup to start     {"controller": "perconapgbackup", "controllerGroup": "pgv2.percona.com", "controllerKind": "PerconaPGBackup", "PerconaPGBackup": {"name":"<REDACTED>","namespace":"<REDACTED>"}, "namespace": "<REDACTED>", "name": "<REDACTED>", "reconcileID": "436f40f4-34f1-4dff-b633-08f8fe31780a", "request": {"name":"<REDACTED>","namespace":"<REDACTED>"}}
2024-11-12T17:23:01.648Z        ERROR   get latest backup       {"controller": "perconapgcluster", "controllerGroup": "pgv2.percona.com", "controllerKind": "PerconaPGCluster", "PerconaPGCluster": {"name":"<REDACTED>","namespace":"<REDACTED>"}, "namespace": "<REDACTED>", "name": "<REDACTED>", "reconcileID": "16ba3814-edfd-4046-a67d-df35ae4fbbd7", "error": "no completed backups found", "errorVerbose": "no completed backups found\ngithub.com/percona/percona-postgresql-operator/percona/watcher.getLatestBackup\n\t/go/src/github.com/percona/percona-postgresql-operator/percona/watcher/wal.go:129\ngithub.com/percona/percona-postgresql-operator/percona/watcher.WatchCommitTimestamps\n\t/go/src/github.com/percona/percona-postgresql-operator/percona/watcher/wal.go:65\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1695"}
runtime.goexit
        /usr/local/go/src/runtime/asm_amd64.s:1695
2024-11-12T17:23:04.803Z        ERROR   unable to create stanza {"controller": "postgrescluster", "controllerGroup": "postgres-operator.crunchydata.com", "controllerKind": "PostgresCluster", "PostgresCluster": {"name":"<REDACTED>","namespace":"<REDACTED>"}, "namespace": "<REDACTED>", "name": "<REDACTED>", "reconcileID": "3264a2fa-dd1a-4272-b79a-cd9167f45de4", "reconciler": "pgBackRest", "error": "command terminated with exit code 32: ", "errorVerbose": "command terminated with exit code 32: \ngithub.com/percona/percona-postgresql-operator/internal/pgbackrest.Executor.StanzaCreateOrUpgrade\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/pgbackrest/pgbackrest.go:96\ngithub.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).reconcileStanzaCreate\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/pgbackrest.go:2705\ngithub.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).reconcilePGBackRest\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/pgbackrest.go:1412\ngithub.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).Reconcile\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/controller.go:390\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:114\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:311\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:261\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:222\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1695\ngithub.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).reconcileStanzaCreate\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/pgbackrest.go:2712\ngithub.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).reconcilePGBackRest\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/pgbackrest.go:1412\ngithub.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).Reconcile\n\t/go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/controller.go:390\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:114\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:311\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:261\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2\n\t/go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:222\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1695"}
github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster.(*Reconciler).Reconcile
        /go/src/github.com/percona/percona-postgresql-operator/internal/controller/postgrescluster/controller.go:390
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile
        /go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:114
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler
        /go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:311
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
        /go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:261
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
        /go/pkg/mod/sigs.k8s.io/controller-runtime@v0.18.4/pkg/internal/controller/controller.go:222

Expected Result:

That the backup would succeed.

Actual Result:

The status of the pg-backup resource is stuck on Starting.

Additional Information:

Cluster resource:

...
      configuration:
        - secret:
            name: <REDACTED>-pgbackrest-secrets
      global:
        repo1-retention-full: "14"
        repo1-retention-full-type: time
        repo1-retention-diff: "14"
        repo1-retention-diff-type: time
      manual:
        repoName: repo1
        options:
         - --type=full
      repos:
      - name: repo1
        s3:
          endpoint: "http://<REDACTED>:9000" # yes, our internal MinIO instance is for some reason http only..
          bucket: "<REDACTED>"
          region: minio
...

-pgbackrest-config config map:

...
data:
  pgbackrest-server.conf: ""
  pgbackrest_instance.conf: |
    # Generated by postgres-operator. DO NOT EDIT.
    # Your changes will not be saved.

    [global]
    log-path = /pgdata/pgbackrest/log
    repo1-path = /pgbackrest/repo1
    repo1-retention-diff = 14
    repo1-retention-diff-type = time
    repo1-retention-full = 14
    repo1-retention-full-type = time
    repo1-s3-bucket = <REDACTED>
    repo1-s3-endpoint = http://<REDACTED>:9000
    repo1-s3-region = minio
    repo1-type = s3

    [db]
    pg1-path = /pgdata/pg16
    pg1-port = 5432
    pg1-socket-path = /tmp/postgres
...
2

Did you create your -pgbackrest-secrets secret with the other required S3 credentials ? repo1-s3-key, repo1-s3-key-secret
And other configuration like repo1-s3-uri-style=path, repo1-storage-verify-tls=n

3

Yep!

I have also tried the repo1-s3-uri-style=path (to be honest, I don’t know what this is actually doing) and repo1-storage-verify-tls=n (shouldn’t be needed at all as we using HTTP at the moment).

4

@92fnko I will check this on Monday and get back to you. Anything specific about your Minio installation?

5

Ok, I will need more details from you.
I tried it today with minio and it worked fine.
How do you deploy minio - any specific config parameters?

My minio installation is deployed with https (default when you deploy with helm). And my pgbackrest config map looks like this:

    archive-async = y
    log-path = /pgdata/pgbackrest/log
    repo1-path = /pgbackrest/repo1
    repo1-s3-bucket = sp-test
    repo1-s3-endpoint = https://minio.default.svc.cluster.local
    repo1-s3-region = us-east-1
    repo1-s3-uri-style = path
    repo1-storage-verify-tls = n
    repo1-type = s3
    spool-path = /pgdata/pgbackrest-spool
6

@92fnko for some reason, for me only works with repo2-storage-verify-tls=y , but we have a https endpoint … you can try and see

7

Thanks for the input! Apparently, the pgbackrest uses path as S3 URI style by default, so repo1-s3-uri-style shouldn’t be needed.

@Sergey_Pronin We are currently using an external MinIO (outside the cluster), and it will soon be on HTTPS only. But out of curiosity, would you mind set up the MinIO without HTTPS and test the same scenario?

8

@92fnko please share with me how you deploy minio. I took the latest minio instruction and it automatically deployed it with HTTPs. I can figure it out, but then it might be a different version, different config, etc. So please share the helm values.yaml or any other manifest that you use.

9

I’ve just created this thread Documenting my tests in using HTTP with pgbackrest and Minio and Discourse suggested me this thread.

I had the same problem as OP whilst running pgbackrest over HTTP, it doesn’t seem to be possible, though that was just my experience. Hope the link above helps!

1 Like