pdsh parallel distributed shell

usages

1. steps

   1. install

       $ brew install pdsh
      

   2. usage

       $ pdsh -w "node[1-4]" -l root date
       $ pdsh -w "node[1-4]" -l root uptime
      

   3. sync ntp

       $ pdsh -w "node[1-4]" -l root service ntpd stop
       $ pdsh -w "node[1-4]" -l root ntpdate 192.168.100.101
       $ pdsh -w "node[1-4]" -l root service ntpd start
      

2. use hosts file

   1. hosts file

       $ nano hosts.txt
       node1
       node2
       node3
       node4
      

   2. usage

       $ pdsh -R ssh -w ^hosts.txt -l root date