Although SUSE discontinued their product, the procedure is still correct [0]:
1. Tell the Ceph cluster not to mark OSDs as out:
ceph osd set noout
2. Stop daemons and nodes in the following order:
Storage clients
Gateways, for example NFS Ganesha or Object Gateway
Metadata Server
Ceph OSD
Ceph Manager
Ceph Monitor
3. If required, perform maintenance tasks.
4. Start the nodes and servers in the reverse order of the shutdown process:
Ceph Monitor
Ceph Manager
Ceph OSD
Metadata Server
Gateways, for example NFS Ganesha or Object Gateway
Storage clients
5. Remove the noout flag:
ceph osd unset noout
[0]
https://documentation.suse.com/en-us/ses/7.1/html/ses-all/storage-salt-cluster.html#sec-salt-cluster-reboot
Zitat von gagan tiwari <gagan.tiw...@mathisys-india.com>:
Hi Guys,
I have recently set-up a production ceph cluster which
consists of 3 monitor nodes and 7 Osd nodes.
There is power maintenance activity scheduled at the data centre coming
weekend and due to that I need to power off all the devices.
Can you please advise me on the safest way to power off all servers?
Should I power off all 7 OSD servers one by one followed by all 3 monitor
nodes or vice versa?
Thanks,
Gagan
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