ssh-keyscan.sh

ssh-keyscan.sh

echo "Probing SSH Servers for updating known_hosts file..."

SERVER_LIST=(server1.example.org server2.example.org)

for h in ${SERVER_LIST[*]}; do
    ip=$(dig +short $h)

    echo "Update known_hosts for ${h} with IP ${ip}"

    ssh-keygen -R $h -f /home/vagrant/.ssh/known_hosts
    ssh-keygen -R $ip -f /home/vagrant/.ssh/known_hosts
    ssh-keyscan -H $ip >> /home/vagrant/.ssh/known_hosts
    ssh-keyscan -H $h >> /home/vagrant/.ssh/known_hosts
done