Maybe you hit this https://github.com/ceph/ceph/pull/10238 still waits for merge. This will occur only if you have ceph-mds process in your cluster, but it's not configured (you not need to use MDS, this process could be running only on some node). Check your monitor logs for something like: "up but filesystem disabled" and how many similar lines you have. Regards, Igor. > -----Original Message----- > From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of > mj > Sent: Friday, November 4, 2016 2:06 PM > To: ceph-users@xxxxxxxxxxxxxx > Subject: suddenly high memory usage for ceph-mon process > > Hi, > > Running ceph 0.94.9 on jessie (proxmox), three hosts, 4 OSDs per host, ssd > journal, 10G cluster network. Hosts have 65G ram. The cluster is generally not > very buzy. > > Suddenly we were getting HEALTH_WRN today, with two osd's (both on the > same server) being slow. Looking into this, we noticed very high memory > usage on that host: 75% memory for ceph-mon! > > (normally here ceph-mon uses around 1% - 2%) > > I restarted ceph-mon on that host, and that seems to have brought things > back to normal immediately. > > I don't see anything out of the ordinary in /var/log/syslog on that server, and > also generally the cluster is HEALTH_OK. No changes to configs lately (last > many weeks) and last time I applied updates and rebooted is 30 days ago. > > No idea what could have caused this. Any ideas what to check, where to > look? What would typically cause such high memory usage for the ceph-mon > process? > > MJ > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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