ssh key
Generate key pair
with default names ~/.ssh/id_rsa and ~/.ssh/id_rsa.pub. For security reasons highly recomended to use only passphrase protected keys.
ssh-keygen
change passphrase of default key if needed
ssh-keygen -p
copy to servers ( if password login allowed)
ssh-copy-id login@servername
generate public key from existing private
ssh-keygen -y -f ~/.ssh/rsa_id > ~/.ssh/rsa_id.pub
ssh-agent
ssh-agent autostart
.bashrc
AGENT=`ps -ef |grep ssh-agent|grep $USER|grep -v grep`
if [ "${AGENT}" = "" ];
then
ssh-agent > .ssh/agent_env
source .ssh/agent_env
else
source .ssh/agent_env
fi
KEYLIST=`ssh-add -l`
if [ "${KEYLIST}" = "The agent has no identities." ];
then
ssh-add
fi
enable passwords
sed -i 's/^PasswordAuthentication no/PasswordAuthentication yes/' /etc/ssh/sshd_config service sshd restart
