To check on effects of measures such as https://gerrit.wikimedia.org/r/c/operations/puppet/+/881007 for T327060 it would be useful to have graphs showing disk space usage on gitlab-runners.
We have an existing dashboard for gitlab-runner details at:
But this does not have a panel for disk space usage so far.
The generic host dashboard for any host also does not have it, but does have similar things like disk utilization and disk saturation.
Let's add a panel to the gitlab-runner specific dashboard that shows simple "space left".
It's suprisingly hard for me to do that, would enjoy some teachings from others with experience creating dashboards in grafana-rw.