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I am running Proxmox with 2 nodes and Ceph. Recently I had a drive die and replaced it. In the process of trying to initialize it as an OSD, all I get are fault errors:

2017-07-31 15:05:05.278499 7fe2ac319700  0 -- :/2194139526 >> 172.18.1.4:6789/0 pipe(0x7fe2a805f1c0 sd=3 :0 s=1 pgs=0 cs=0 l=1 c=0x7fe2a805ceb0).fault

The syslog is full of lines like this:

Jul 31 15:03:01 thebrain ceph-osd-prestart.sh[2460]: 2017-07-31 15:03:01.817941 7f1258204700  0 -- :/2850968481 >> 172.18.1.4:6789/0 pipe(0x7f1248005160 sd=4 :0 s=1 pgs=0 cs=0 l=1 c=0x7f1248004050).fault

During this switch I also moved the monitors and ceph.conf from different addresses to a different subnet. Switching them back to the old addresses doesn't stop the errors, but maybe this has something to do with the errors.

Any advice on troubleshooting this? Thanks.

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Turns out there are two ceph.conf. Proxmox places one in /etc/pve and that is the one that is shown in the web interface. Ceph actually uses the one in /etc/ceph and these did not match. Changing the /etc/ceph one to match the /etc/pve one has solved the faults issue.

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