What does the repmgr the symbol "*" mean in the repmgr cluster status output?
It's not documented, but the code is here; it looks like * running is used for the running state for primaries and witnesses, but not secondaries. I'm not sure how intended that is; it might have just been a copy/paste of the code block that was used for primary; here's the relevant commit that introduced the 2nd * running status string.