Installation

# yum install clustershell
clush
cluset
nodeset
clubak

Configuration

$ vim /etc/clustershell/groups.d/local.cfg
# nodeset -L
@all
# nodeset -LL
@all 127.0.0.1,172.16.0.2

ssh-copy-id 127.0.0.1
ssh-copy-id 172.16.0.2

# clush -a 'free -g'
127.0.0.1:               total        used        free      shared  buff/cache   available
127.0.0.1: Mem:              0           0           0           0           0           0
127.0.0.1: Swap:             0           0           0
172.16.0.2:               total        used        free      shared  buff/cache   available
172.16.0.2: Mem:              0           0           0           0           0           0
172.16.0.2: Swap:             0           0           0