Hi Jim,
On 02/08/2017 07:45 PM, Jim Kilborn wrote:
I have had two ceph monitor nodes generate swap space alerts this week.
Looking at the memory, I see ceph-mon using a lot of memory and most of the
swap space. My ceph nodes have 128GB mem, with 2GB swap (I know the
memory/swap ratio is odd)
When I get the alert, I see the following
[snip]
root@empire-ceph02 ~]# ps -aux | egrep 'ceph-mon|MEM'
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
ceph 174239 0.3 45.8 62812848 60405112 ? Ssl 2016 269:08
/usr/bin/ceph-mon -f --cluster ceph --id empire-ceph02 --setuser ceph
--setgroup ceph
[snip]
Is this a setting issue? Or Maybe a bug?
When I look at the other ceph-mon processes on other nodes, they aren’t using
any swap, and only about 500MB of memory.
Can you get us the result of `ceph -s`, of `ceph daemon mon.ID ops`, and
the size of your monitor's data directory? The latter, ideally,
recursive with the sizes of all the children in the tree (which,
assuming they're a lot, would likely be better on a pastebin).
-Joao
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