Posts tagged clush

clustershell
posted on 2016-12-29 13:26

When needing to run commands on several servers over ssh, there's always that for-loop for you.

But you could also try running clustershell:

sjas@ws:~$ clush -w server-[01,02,05,11,12] -b hostname -f
---------------
server-01
---------------
server-01.some-domain.com
---------------
server-02
---------------
server-02.some-domain.com
---------------
server-05
---------------
server-05.some-domain.com
---------------
server-11
---------------
server-11.some-domain.com
---------------
server-12
---------------
server-12.some-domain.com

-b to use it non-interactively and to get the shown aggregated results (the hosts are colored), -w to specify the hosts. Use [ ] instead of { } like you would in bash.

-B also includes STDERR.

A problem you may run into, is when you try to run commands with pipes.

Further you can also predefine hostgroups and copy files from/to remote hosts. This is a rather nice tool.

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