Grafana Hanging During Start Up

Grafana
1

We are running Grafana 12.0.0 using six instances. During startup one or more of the instances will hang and never recover even if restarted. We are using MariaDB 10.3.13 running in a Galera cluster with 5 instances.

This is the last entry in the log during start up:

logger=sqlstore t=2025-09-28T12:30:08.213606264-05:00 level=info msg=“Connecting to DB” dbtype=mysql
logger=migrator t=2025-09-28T12:30:08.222598016-05:00 level=info msg=“Locking database”
logger=migrator t=2025-09-28T12:30:08.224651042-05:00 level=info msg=“Starting DB migrations”
logger=migrator t=2025-09-28T12:30:08.240201525-05:00 level=info msg=“Executing migration” id=“Add missing dashboard_uid to annotation table”

Has anyone else experienced this type of behavior?

Thank You!

Eric

2

Try to use latest in that 12.0.x release series. That’s 12.0.7, so there can be some bugfixes/improvements already. Maybe for your issue as well (read release notes if you want to be sure).
Also define “hangings”. A few seconds delay is normal. Did you setup proper HA Set up Grafana for high availability | Grafana documentation when you are saying that you have multiple instances?

3

Hi,

When I inherited this Grafana environment the HA was never set up. We are using multiple instances that have a load balancer in front of them nothing else is in place. I will begin looking into.

Thanks for the response!

Eric