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Hi,
I have my monitors running on three out of my eight OSD servers (I know the docs recommend separate hardware but I don't think that makes sense for a small/dense cluster like this). I noticed that when I reboot the server that hosts the primary monitor, the OSDs on that server are not gracefully marked down and I end up with warnings about blocked ops until the server comes back up. This is the only server it happens on. Digging deeper I noticed the monitor service was getting shutdown before (or at least at the same time as) the OSD service. This is on Ubuntu 16.04, so I am using systemd. I went ahead and modified /lib/systemd/system/ceph-osd@.service to include "ceph-mon.target" on the "AFTER" and "WANTS" lines and that appears to have solved the issue for me. Shall I open a ticket to include this change? Thanks, Brendan |
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