Configuring the number of standby daemons

Each Ceph File System (CephFS) can specify the required number of standby daemons to be considered healthy. This number also includes the standby-replay daemon waiting for a rank failure.

Before you begin

Be sure that you have root-level access to a Ceph Monitor node.

Procedure

Set the expected number of standby daemons for a particular CephFS.

ceph fs set FS_NAME standby_count_wanted NUMBER

Note: Setting the NUMBER to zero disables the daemon health check.

For example, to set the expected standby daemon count to two:

[root@mon ~]# ceph fs set cephfs standby_count_wanted 2