How or what program to perform an action on all servers simultaneously via ssh?

Question

linux

there are several servers
, let's say 100
, and you need to enter a command in each via ssh .... this can take forever
, how can this be done simultaneously for all?

Answer 1

Ansible: www.ansible.com/home

Answer 2

Absible, Chef, Puppet are all correct solutions. But I can still offer something like this crutch.

for i in `cat /list/of/servers`; do
    ssh $i 'ls -l'
done

This implies that all servers have access by key and the password for the key has already been entered.

Answer 3

For example, like this habrahabr.ru/post/215111 or like this habrahabr.ru/post/163811
or man dsh

Answer 4

1. See the ssh syntax to execute the command on the server
2. Copy this command line by line 100 times
3. Change the user\server in each line
4. Copy and paste into the terminal or save to a file and execute it

Answer 5

dsh, as an
ansible solution, as a system solution.

Answer 6

pssh etc.

Answer 7

gnu-parallel

Answer 8

MTPUTTY. Plus solutions from the developer in the form of a mailer for all open tabs (or for all saved ones too).
As an option - Puppet, as a system management solution.