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Update Helm Chart docs with instructions for deploying RocksDB variant (#9006)

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* Update documentation for helm chart, with instructions on how to deploy the RocksDB image tag variant.

Signed-off-by: Mark McCormick <mark.mccormick@chainguard.dev>

Nit: Update example to make it clearer that the seaweedfs version needs to be replaced.

Signed-off-by: Mark McCormick <mark.mccormick@chainguard.dev>

* docs(helm): clarify RocksDB variant instructions

- Note that filer persistence (enablePVC) is required so RocksDB
  metadata survives restarts.
- Explain why master/volume also use the rocksdb-tagged image.
- Tighten wording around WEED_LEVELDB2_ENABLED override.

---------

Signed-off-by: Mark McCormick <mark.mccormick@chainguard.dev>
Co-authored-by: Chris Lu <chris.lu@gmail.com>
This commit is contained in:
Mark McCormick
2026-04-13 18:56:14 +01:00
committed by GitHub
parent cc5b246973
commit 2ee6907c19
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k8s/charts/seaweedfs/README.md
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@@ -49,6 +49,35 @@ CREATE TABLE IF NOT EXISTS `filemeta` (
Alternative database can also be configured (e.g. leveldb, postgres) following the instructions at `filer.extraEnvironmentVars`.
#### RocksDB variant
The `_large_disk_rocksdb` image tag ships with RocksDB pre-configured as the filer backend.
To use this image with the Helm chart, override the image on all three components and disable
the chart's default `WEED_LEVELDB2_ENABLED`, which would otherwise re-enable LevelDB2 and
override the image's built-in RocksDB configuration:
```yaml
# Replace <VERSION> with the desired seaweedfs version, e.g. 3.80_large_disk_rocksdb.
master:
imageOverride: chrislusf/seaweedfs:<VERSION>_large_disk_rocksdb
volume:
imageOverride: chrislusf/seaweedfs:<VERSION>_large_disk_rocksdb
filer:
enablePVC: true
imageOverride: chrislusf/seaweedfs:<VERSION>_large_disk_rocksdb
extraEnvironmentVars:
WEED_LEVELDB2_ENABLED: "false"
```
Notes:
* `master` and `volume` use the same image tag so that all components share a consistent
SeaweedFS build; RocksDB itself is only used by the filer.
* `filer.enablePVC: true` (or another form of persistent storage for the filer) is required
so that the RocksDB metadata store survives pod restarts — otherwise metadata will be lost.
### Node Labels
Kubernetes nodes can have labels which help to define which node(Host) will run which pod: