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10 changes: 10 additions & 0 deletions web/docs/object_stores.md
Original file line number Diff line number Diff line change
Expand Up @@ -171,13 +171,23 @@ spec:
value: when_required
- name: AWS_RESPONSE_CHECKSUM_VALIDATION
value: when_required
- name: AWS_DEFAULT_REGION
value: eu-central-1
[...]
```

These settings ensure that checksum calculations and validations are only
applied when explicitly required, avoiding compatibility issues with certain
S3-compatible storage providers.

Newer AWS SDK libraries can also fail to resolve the target region
automatically, particularly on recent releases of S3-compatible storage
providers. If the sidecar logs show region-related errors, set
`AWS_DEFAULT_REGION` in the same `env` block. This was reported in
[GitHub issue #800](https://github.com/cloudnative-pg/plugin-barman-cloud/issues/800),
where the operator also required the checksum variables on a cloud with
strict defaults.

Example with DigitalOcean Spaces (SFO3, path-style):

```yaml
Expand Down