clusterssh

Ditto. I posted (here: https://news.ycombinator.com/item?id=42881123 ) about them and other options: To send the same command to multiple servers, use pdsh: https://linux.die.net/man/1/pdsh To collect all the results and show which ones are the same or different, use dshbak (i.e., "pdsh <parameters including servers>|dshbak"): https://linux.die.net/man/1/dshbak Similar things, sometimes more convenient but less efficient for a large number of servers, are to use the konsole terminal program and link multiple window tabs together so the same typed command goes to all, and quickly view the results across the tabs; or to use tmux and send the same commands to multiple windows (possible useful "man tmux" page terms: link-window, pipe-pane, related things to those, activity, focus, hooks, control mode). And others that I haven't used but which

I dunno about standard, but it's been done a bunch. * As sibling notes, there's ansible (or chef/puppet/salt/...) * The traditional solution was https://github.com/duncs/clusterssh which opens an xterm to each target plus a window that you type into to mirror input to all of them * I do the same-ish in tmux with bind-key a set-window-option synchronize-panes and I expect screen and such have equivalent features * Likewise, there are terminal emulators that let you do splits and then select a menu option to mirror input to all of them

The above links but clickable now are: - pdsh: https://linux.die.net/man/1/pdsh - dshbak: https://linux.die.net/man/1/dshbak - clusterssh: https://github.com/duncs/clusterssh/wiki - parallel: https://www.gnu.org/software/parallel/

Back when I was occasionally managing many servers, I would have to run the same adhoc command on all of them and see which ones succeeded identically to the others, and which ones failed, for further follow-up. These commands were really useful (assuming ssh keys are set up already, for logins). (I didn't know about these until a coworker told me, so I thought I'd pass it on.): To send the same command to multiple servers, use pdsh: https://linux.die.net/man/1/pdsh To collect all the results and show which ones are the same or different, use dshbak (i.e., "pdsh <parameters including servers>|dshbak"): https://linux.die.net/man/1/dshbak Similar things, sometimes more convenient but less efficient for a large number of servers, are to use the konsole terminal program and link multiple window tabs together so the same typed command goes

For linux users this is the equivalent: https://github.com/duncs/clusterssh