Thanks for the feedback.
Long running processes are always a problem (and I think docker disk usage is notorious for running long, see example config!). Usually, we’d advise users to configure the plugin to run asynchronously, but that’s just what was broken with systemd.
It is fixed in the master branch now (check_mk_agent: Fix issues with systemd), and we are condsidering bringing the fix to the stable branch.
2 Likes