CODEWITHSUNDEEP
linuxbashsshscripting
Chanafot
Chanafot

Reputation: 796

bash script to check connectivity in multiple servers (avoid ECDSA key are you sure you want....)

not an linux expert but I´m trying to see a way of using a bash script to check connectivity tu multiple servers and avoid any human intervention.

I have something like this, so that I can connect to a host, execute hostname and put that info in a log

#!/bin/bash
for host in $(cat server.txt)
do
        ssh -q -o ConnectTimeout=3 "$host" "hostname"
done > servers.log

Is this possible to execute and avoid the

ECDSA key fingerprint is a3:eb:a8:4d:90:1d:ae:83:bc:7b:a9:47:69:67:67:7f.
Are you sure you want to continue connecting (yes/no)?
 ?

or just to force toy say YES?

thank you

Upvotes: 0

Views: 528

Answers (1)

anubhava
anubhava

Reputation: 785068

To suppress this warning in ssh command use:

ssh -o "StrictHostKeyChecking=no" user@host

Also use while read loop instead of for loop like this:

while read -r host; do
    ssh -tt -oBatchMode=yes -o "StrictHostKeyChecking=no" "user@$host"
done < server.txt > servers.log

Upvotes: 3

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