Shlink with Redis in Openshift

[filou01]

Shlink version

latest

PHP version

shipped with container

How do you serve Shlink

Docker image

Database engine

MicrosoftSQL

Database version

latest

Summary

Hi,

i´m planning to run shlink in an openshift cluster with a pod-count greater than 1.
In the backend there is a MS-SQL DB (HA Cluster).
If i´ve understood it correct, it is necessary to use a redis in-mem instance when the shlink pod count is greater than 1.
For reduncancy reasons i´ve set up two redis containers (each standalone) and configured both of them to be used from my shlink pods.
So far everythink works fine, until both redis pods restart. Afterwards the shlink pods don´t reconnect to the redis instances any more until they are restarted.
Before restarting it is not possible to create new short links.

Is there a configuration issue or is that a bug within shlink?
Is it really necessary to use redis when the shlink pod count is greater than 1?

Thank you and regards

[acelaya]

Is there a configuration issue or is that a bug within shlink?

This sounds like a bug to me. Could you open a bug report? https://github.com/shlinkio/shlink/issues/new?template=Bug.yml

Is it really necessary to use redis when the shlink pod count is greater than 1?

Yes, as there are operations that should not be run more than once in parallel (like migrations), so a central storage is needed for all Shlink instances to coordinate.