Mastering Proxmox - Third Edition

Ceph command list

The following table shows some of the common Ceph commands used in a cluster:

Command	Function
#ceph -s	Displays the Ceph cluster status.
#ceph -w	Displays the Ceph cluster running log.
#ceph health detail	Displays a detailed error if there is one.
#ceph osd tree	Displays a list of all OSDs categorized by nodes.
#ceph set osd noout #ceph set osd nodown	Prevents any OSDs from getting marked out and down, so Ceph does not start rebalancing. It is necessary during maintenance when the node requires a reboot due to updates.
#ceph unset osd noout #ceph unset osd nodown	Must be run after the maintenance is over in order to resume normal operation.
#ceph daemon osd.X config show | grep ...