Aliyun OSS - S3 compatible storage issue!!!

[shusaan]

I have configured cluster to access (Aliyun OSS) S3 compatible storage but it show this error, can you please help me how to resolve this.
Here are configuration.

---
apiVersion: postgresql.cnpg.io/v1
kind: Cluster
metadata:
  name: cluster1
spec:
  instances: 1
  startDelay: 300
  stopDelay: 300
  replicationSlots:
    highAvailability:
      enabled: true
    updateInterval: 300
  primaryUpdateStrategy: unsupervised
  storage:
    storageClass: sc-ha
    size: 20Gi
  walStorage:
    storageClass: sc-ha
    size: 20Gi
  monitoring:
    enablePodMonitor: true
  backup:
    barmanObjectStore:
      destinationPath: "s3://testbucket/"
      endpointURL: "https://cn-shanghai.oss.aliyuncs.com"
      s3Credentials:
        accessKeyId:
          name: minio-creds
          key: MINIO_ACCESS_KEY
        secretAccessKey:
          name: minio-creds
          key: MINIO_SECRET_KEY
      wal:
        compression: gzip
        maxParallel: 8
    retentionPolicy: "30d"

Here are the logs

{"level":"info","ts":"2023-10-19T14:55:21Z","logger":"barman-cloud-check-wal-archive","msg":"2023-10-19 14:55:21,576 [1568] ERROR: Barman cloud WAL archive check exception: An error occurred (403) when calling the HeadBucket operation: Forbidden","pipe":"stderr","logging_pod":"cluster1-1"}
{"level":"error","ts":"2023-10-19T14:55:21Z","logger":"wal-archive","msg":"Error invoking barman-cloud-check-wal-archive","logging_pod":"cluster1-1","currentPrimary":"cluster1-1","targetPrimary":"cluster1-1","options":["--endpoint-url","https://cn-shanghai.oss.aliyuncs.com","--cloud-provider","aws-s3","s3://testbucket/","cluster1"],"exitCode":-1,"error":"exit status 4","stacktrace":"github.com/cloudnative-pg/cloudnative-pg/pkg/management/log.(*logger).Error\n\tpkg/management/log/log.go:128\ngithub.com/cloudnative-pg/cloudnative-pg/pkg/management/barman/archiver.(*WALArchiver).CheckWalArchiveDestination\n\tpkg/management/barman/archiver/archiver.go:257\ngithub.com/cloudnative-pg/cloudnative-pg/internal/cmd/manager/walarchive.checkWalArchive\n\tinternal/cmd/manager/walarchive/cmd.go:373\ngithub.com/cloudnative-pg/cloudnative-pg/internal/cmd/manager/walarchive.run\n\tinternal/cmd/manager/walarchive/cmd.go:190\ngithub.com/cloudnative-pg/cloudnative-pg/internal/cmd/manager/walarchive.NewCmd.func1\n\tinternal/cmd/manager/walarchive/cmd.go:85\ngithub.com/spf13/cobra.(*Command).execute\n\tpkg/mod/github.com/spf13/cobra@v1.7.0/command.go:940\ngithub.com/spf13/cobra.(*Command).ExecuteC\n\tpkg/mod/github.com/spf13/cobra@v1.7.0/command.go:1068\ngithub.com/spf13/cobra.(*Command).Execute\n\tpkg/mod/github.com/spf13/cobra@v1.7.0/command.go:992\nmain.main\n\tcmd/manager/main.go:64\nruntime.main\n\t/opt/hostedtoolcache/go/1.21.1/x64/src/runtime/proc.go:267"}
{"level":"error","ts":"2023-10-19T14:55:21Z","msg":"while barman-cloud-check-wal-archive","logging_pod":"cluster1-1","error":"unexpected failure invoking barman-cloud-wal-archive: exit status 4","stacktrace":"github.com/cloudnative-pg/cloudnative-pg/pkg/management/log.(*logger).Error\n\tpkg/management/log/log.go:128\ngithub.com/cloudnative-pg/cloudnative-pg/pkg/management/log.Error\n\tpkg/management/log/log.go:166\ngithub.com/cloudnative-pg/cloudnative-pg/internal/cmd/manager/walarchive.checkWalArchive\n\tinternal/cmd/manager/walarchive/cmd.go:374\ngithub.com/cloudnative-pg/cloudnative-pg/internal/cmd/manager/walarchive.run\n\tinternal/cmd/manager/walarchive/cmd.go:190\ngithub.com/cloudnative-pg/cloudnative-pg/internal/cmd/manager/walarchive.NewCmd.func1\n\tinternal/cmd/manager/walarchive/cmd.go:85\ngithub.com/spf13/cobra.(*Command).execute\n\tpkg/mod/github.com/spf13/cobra@v1.7.0/command.go:940\ngithub.com/spf13/cobra.(*Command).ExecuteC\n\tpkg/mod/github.com/spf13/cobra@v1.7.0/command.go:1068\ngithub.com/spf13/cobra.(*Command).Execute\n\tpkg/mod/github.com/spf13/cobra@v1.7.0/command.go:992\nmain.main\n\tcmd/manager/main.go:64\nruntime.main\n\t/opt/hostedtoolcache/go/1.21.1/x64/src/runtime/proc.go:267"}

I Have also tested with user that has full permission but the error was same, is there any custom config required for ALIYUN OSS storage?
As per Document the OSS is compatible with S3.

Please advice

[mikewallace1979]

Hi @shusaan - it's quite common for S3-compatible object stores to have different requirements around the endpoint URL.

Currently you have:

      endpointURL: "https://cn-shanghai.oss.aliyuncs.com"

However no such URL is listed in the documentation for regions and endpoints - the public endpoint listed for Shanghai is oss-cn-shanghai.aliyuncs.com.

Can you retry with:

      endpointURL: "https://oss-cn-shanghai.aliyuncs.com"

and let us know the outcome?

Thanks.