[SOLVED] Ceph Node Removal Issue

I

infinityM

Well-Known Member
Dec 7, 2019
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Hey Guys,

Ok so I'm hoping someone can please advise me....
So I removed 3 nodes from our cluster, initially following the node removal guide, but only afterwards noticing an issue...

So in Ceph, I still see 2 servers, and 1 server with all it's OSD's.
Since removing the 3 servers, the performance has gone down quite a bit even though it should be better since the change was meant to improve the performance by making all drives used the same size and removing the raided drives using an EMC2 machine only to pick up the drives directly...

So how can I go about removing both the nodes from Ceph, aswell as the OSD's from the removed nodes?
 
You need to do the following
ceph osd crush rm osd_num
ceph osd auth del osd_num
ceph osd rm osd_num
ceph osd crush rm nodename

All the steps you have to do after stopping ceph mon and ceph mgr service on nodes to be removed
To avoid rebalancing you may set nout and norebalance flags
 
ermanishchawla said:
You need to do the following
ceph osd crush rm osd_num
ceph osd auth del osd_num
ceph osd rm osd_num
ceph osd crush rm nodename

All the steps you have to do after stopping ceph mon and ceph mgr service on nodes to be removed
To avoid rebalancing you may set nout and norebalance flags
Click to expand...

Thank you bud, The ceph osd auth del osd_num line did not work though. But it looks like everything else is 100% :).

Thank you for the advise :)
 
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