Setup ssh keys and bash profiles for easy access

Creating SSH keys

Run the below commands and enter the required details. Once created it would be placed under path ~/.ssh/

ssh-keygen -t rsa

Disable root login

Open the sshd_config file and update

vim /etc/ssh/sshd_config

PermitRootLogin without-password

copy the public key

ssh-copy-id -i ~/.ssh/id_rsa <user>@<ip>

Restart service

service sshd restart

Now you can start a session using ssh -i @ to login to the node using the ssh keys instead of user/pass.

Creating bash alias

create your aliases in a custom alias file under the path ~/.bash_aliases

more ~/.bash_aliases 
#My custom aliases
alias pi="ssh -i ~/.ssh/id_rsa <user>@<ip>"

Ensure the file bash_aliases is referenced in bashrc file. you would see something like the below

more ~/.bashrc
< ----- snipped ------ >
# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

once created, if you want to use the profile in the existing running terminal you would need to load the profile. Or simply exit the session and start a new one to load automatically

. ~/.bash_profile

References

• https://www.digitalocean.com/community/tutorials/how-to-set-up-ssh-keys-2

[ linux  ]