Re: Best way to stop an OSD form coming back online

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Don’t you rather want to use 'systemctl disable'? And maybe out comment 
the fstab entry, just to make sure.


-----Original Message-----
From: Brett Chancellor [mailto:bchancellor@xxxxxxxxxxxxxx] 
Sent: woensdag 28 augustus 2019 3:28
To: Cory Hawkless
Cc: ceph-users@xxxxxxx
Subject:  Re: Best way to stop an OSD form coming back 
online

If you just destroy the osd, it won't change the crush weight. Once the 
drive is replaced you can recreate the osd with the same OSD.

On Tue, Aug 27, 2019, 8:53 PM Cory Hawkless <Cory@xxxxxxxxxxxxxx> wrote:


	I have an OSD that is throwing sense errors – It’s at it’s end 
of life and needs to be replaced.

	The server is in the datacentre and I won’t get there for a few 
weeks so I’ve stopped the service (systemctl stop ceph-osd@208) and let 
the cluster rebalance, all is well.

	 

	My thinking is that if for some reason the host that OSD208 resides 
within was to reboot, that OSD would start and become part of the 
cluster again.

	 

	So I’d like to prevent this OSD from ever starting again without 
physically being able to remove it from the server.

	 

	I was thinking that deleting it’s key from the auth list might 
work. So a ceph osd purge 208

	Then when the service tries to start it’ll fail with an auth 
error.

	 

	Any other suggestions?

	 

	Cheers,

	Cory

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