[GH-ISSUE #854] UNKNOWN: redis command error: SADD failed: READONLY You can't write against a read only replica. #420

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opened 2026-03-02 05:21:05 +03:00 by kerem · 2 comments

kerem commented

2026-03-02 05:21:05 +03:00

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Originally created by @avvari-da on GitHub (Apr 6, 2024).
Original GitHub issue: https://github.com/hibiken/asynq/issues/854

Originally assigned to: @hibiken on GitHub.

Describe the bug
Getting the following error randomly.
UNKNOWN: redis command error: SADD failed: READONLY You can't write against a read only replica.
Finding a tough time figuring out the issue.

Additional context
Am using Redis Sentinel on Kubernetes.

Please help!
Thanks in advance.

Originally created by @avvari-da on GitHub (Apr 6, 2024). Original GitHub issue: https://github.com/hibiken/asynq/issues/854 Originally assigned to: @hibiken on GitHub. **Describe the bug** Getting the following error randomly. `UNKNOWN: redis command error: SADD failed: READONLY You can't write against a read only replica.` Finding a tough time figuring out the issue. **Additional context** Am using Redis Sentinel on Kubernetes. Please help! Thanks in advance.

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2026-03-02 05:21:05 +03:00

kerem commented

2026-03-02 05:21:06 +03:00

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@cold-bin commented on GitHub (May 4, 2024):

can your redis perform config set readonly no in redis-cli after data migrated?

@cold-bin commented on GitHub (May 4, 2024): can your redis perform `config set readonly no` in redis-cli after data migrated?

kerem commented

2026-03-02 05:21:06 +03:00

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@hernandikrammes commented on GitHub (May 23, 2024):

We identify that on this situation the use of CPU on kubernetes get very high. Someone could validate that too?

@hernandikrammes commented on GitHub (May 23, 2024): We identify that on this situation the use of CPU on kubernetes get very high. Someone could validate that too?

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