[GH-ISSUE #272] Error -2 connecting to open-webui-redis:6379. Name or service not known. (upgrade from 6.28.0 to 6.29.0) #94

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opened 2026-10-18 21:05:55 +00:00 by bsakaguchi · 2 comments
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Originally created by @mrclrchtr on GitHub (Jul 23, 2025).
Original GitHub issue: https://github.com/open-webui/helm-charts/issues/272

After the upgrade, redis can no longer be found:

Error -2 connecting to open-webui-redis:6379. Name or service not known.

That's right, because now there is only:

❯ k get services
NAME                        TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)    AGE
open-webui                  ClusterIP   10.0.13.211   <none>        80/TCP     118d
open-webui-redis-headless   ClusterIP   None          <none>        6379/TCP   118d
open-webui-redis-master     ClusterIP   10.0.15.247   <none>        6379/TCP   118d
redis-cluster:
  enabled: true
  clusterDomain: cluster.xxx.xx.local
  architecture: standalone

Mitigated by:

redis-cluster:
  url: redis://open-webui-redis-master:6379
Originally created by @mrclrchtr on GitHub (Jul 23, 2025). Original GitHub issue: https://github.com/open-webui/helm-charts/issues/272 After the upgrade, redis can no longer be found: ``` Error -2 connecting to open-webui-redis:6379. Name or service not known. ``` That's right, because now there is only: ```bash ❯ k get services NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE open-webui ClusterIP 10.0.13.211 <none> 80/TCP 118d open-webui-redis-headless ClusterIP None <none> 6379/TCP 118d open-webui-redis-master ClusterIP 10.0.15.247 <none> 6379/TCP 118d ``` ``` redis-cluster: enabled: true clusterDomain: cluster.xxx.xx.local architecture: standalone ``` Mitigated by: ``` redis-cluster: url: redis://open-webui-redis-master:6379 ```
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Owner

@james-westbrook commented on GitHub (Jul 25, 2025):

Sorry about that @mrclrchtr, didn't think about the impact on existing clusters when I merged that. I need to also address the use of the Bitnami chart (https://github.com/open-webui/helm-charts/issues/270) next week, so I'll figure out the best way to work a fix in for this as well.

<!-- gh-comment-id:3119516340 --> @james-westbrook commented on GitHub (Jul 25, 2025): Sorry about that @mrclrchtr, didn't think about the impact on existing clusters when I merged that. I need to also address the use of the Bitnami chart (https://github.com/open-webui/helm-charts/issues/270) next week, so I'll figure out the best way to work a fix in for this as well.
Author
Owner

@james-westbrook commented on GitHub (Jul 29, 2025):

Due to the removal of Redis cluster as a chart dependency, leaving this one unresolved.

<!-- gh-comment-id:3130231225 --> @james-westbrook commented on GitHub (Jul 29, 2025): Due to the removal of Redis cluster as a chart dependency, leaving this one unresolved.
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open-webui/helm-charts#94
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