pdsh

Parallel ssh. Man page.

Install

Add to you .bashrc or .zshrc (or better yet to .zshenv):

export PDSH_RCMD_TYPE=ssh

Examples

$ pdsh -w fuji,duo uname -a
duo: Linux duo 5.13.19-3-pve #1 SMP PVE 5.13.19-7 (Thu, 20 Jan 2022 16:37:56 +0100) x86_64 GNU/Linux
fuji: Linux fuji 5.13.19-4-pve #1 SMP PVE 5.13.19-9 (Mon, 07 Feb 2022 11:01:14 +0100) x86_64 GNU/Linux

$ pdsh -w fuji,duo uptime
duo:  12:12:16 up 30 days, 14:48,  0 users,  load average: 0.15, 0.15, 0.10
fuji:  12:12:16 up 39 days, 23:03,  0 users,  load average: 0.01, 0.07, 0.08

Show top 3 CPU consumers:

pdsh -w fuji,duo 'ps -eo pcpu,pid,user,args|sort -k 1 -nr|head -3'

Example of passing a sudo password

$ pdsh -w fuji,duo echo 'password'|sudo -S apt-get update