I'm having a play with ceph-deploy after some time away from it (mainly relying on the puppet modules).
With a test setup of only two debian testing servers, I do the following: ceph-deploy new host1 host2 ceph-deploy install host1 host2 (installs emperor) ceph-deploy mon create host1 host2 ceph-deploy osd prepare host1:/dev/sda4 host2:/dev/sda4 ceph-deploy osd activate host1:/dev/sda4 host2:/dev/sda4 ceph-deploy mds create host1 host2 Everything is running fine -- copy some files into CephFS, everything it looking great. host1: /etc/init.d/ceph stop osd Still fine. host1: /etc/init.d/ceph stop mds Fails over to the standby mds after a few seconds. Little outage, but to be expected. Everything fine. host1: /etc/init.d/ceph start osd host1: /etc/init.d/ceph start mds Everything recovers, everything is fine. Now, let's do something drastic: host1: reboot host2: reboot Both hosts come back up, but the mds never recovers -- it always says it is replaying. On closer inspection, host2's osd never came back into action. Doing: ceph-deploy osd activate host2:/dev/sda4 fixed the issue, and the mds recovered, as well as the osd now reporting both "up" and "in". Is there something obvious I'm missing? The ceph.conf seemed remarkably empty, do I have to re-deploy the configuration file to the monitors or similar? I've never noticed a problem with puppet deployed hosts, but that manually writes out the ceph.conf as part of the puppet run. Many thanks in advance, Matthew Walster
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