Code Snippets

tags:
LoopsNetworking TagSsh

Loop SSH Across Hosts

Run the same command on a list of hosts with -o BatchMode for key-only auth.

Author: chris

// Language: Bash 

#!/usr/bin/env bash
set -euo pipefail

hosts=(web01 web02 web03 db01)

for h in "${hosts[@]}"; do
    printf '=== %s ===\n' "$h"
    ssh -o BatchMode=yes -o ConnectTimeout=5 "$h" 'uptime'
done