SSH key auto add

info.md

SSH Key Auto Add

Note

Use ansible instead

WARNING!

It uses eval

Description

Appends (if not already added) a line with PUBLIC key to every of the given servers

Must include (in the same dir)

• list - file with servers (line per server)
• ssh-key - key that will be added

Dependencies

• ssh
• ssh-key
• cat
• grep

list.example

test@dev.example.com
root@dev.example.com
test@prod.example.com

script

#!/bin/bash

eval `ssh-agent -s` && ssh-add ~/.ssh/id_rsa

exec_command=$(cat <<-END
	mkdir -p ~/.ssh/
	touch ~/.ssh/authorized_keys

	if grep -Fxq "$(cat ssh-key)" ~/.ssh/authorized_keys 
	then
		echo "Already exists"
	else
		echo "$(cat ssh-key)" >> ~/.ssh/authorized_keys
	fi
END
)


while read -r line; do
	echo "Connecting to" $line
	eval "ssh" $line "'$exec_command'" "< /dev/null"
	echo ""
	# echo -e "" >> test.txt
	# ssh $line ''
done < list