RedisTooManyMasters with multiple Redis clusters

[exolab]

We are seeing this alert after deploying multiple Redis clusters in different namespaces. AFAICT Redis itself does not consider this setup a problem.

Does the alert not take this scenario into account, or are we mistaken in thinking we do not have a real problem?

Shouldn't the query be

count(redis_instance_info{role="master"}) by (namespace) > 1 or something similar that takes this scenario into account?

[oliver006]

Interesting. Where/how was the alert created? Is it part the provided grafana dashboard?
From your description it sounds likely that the query is wrong.

[exolab]

Thank you for your answer.

We are seeing it in Alertmanager. I have now created an issue where the rule is actually defined. ;)

samber/awesome-prometheus-alerts#419