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I believe the option you're looking for is mon_data_size_warn. The default is set to 16106127360. I've found that sometimes the mons need a little help getting started with trimming if you just completed a large expansion. Earlier today I had a cluster where the mon's data directory was over 40GB on all the mons. When I restarted
them one at a time with 'mon_compact_on_start = true' set in the '[mon]' section of ceph.conf, they stayed around 40GB in size. However, when I was about to hit send on an email to the list about this very topic, the warning cleared up and now the data directory
is now between 1-3GB on each of the mons. This was on a cluster with >1900 OSDs. Bryan From: ceph-users <ceph-users-bounces@xxxxxxxxxxxxxx> on behalf of Pardhiv Karri <meher4india@xxxxxxxxx> Hi, We have a large Ceph cluster (Hammer version). We recently saw its mon store growing too big > 15GB on all 3 monitors without any rebalancing happening for quiet sometime. We have compacted the
DB using "#ceph tell mon.[ID] compact" for now. But is there a way to increase the size of the mon store to 32GB or something to avoid getting the Ceph health to warning state due to Mon store growing too big? -- Thanks, Pardhiv
Karri |
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