FIX :: ceph-deploy error with "try to use systemctl"

Error Message:
The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

Solution:
1. update ceph repository from official ceph repo, not from epel repo
2. > yum update ceph-deploy
3. > do something...

FIX :: nfs-ganesha CRIT error in gsh_dbus_pkginit

Error log:

gsh_dbus_pkginit :DBUS :CRIT :server bus reg failed (org.ganesha.nfsd, Connection ":1.204" is not allowed to own the service "org.ganesha.nfsd" due to security policies in the configuration file)
nfs_Init_svc :DISP :CRIT :Cannot acquire credentials for principal nfs

Solution:
> yum install -y nfs-utils