The environment is in MacBook

1. Turn on the terminal then generate the key
   ssh-keygen
2. Afterwards, see the pathway of files
   
   • id_rsa: private key
   • id_rsa.pub: public key
   • known_hosts: server information whom accpeted the connection
3. Find out the public key (id_rsa.pub) and pass the file to the administor of remote service (usually the Site Reliability Engineer)
   
4. While the SRE finished, test the connection with password (which is set previously).
   
5. If the everything alright, please keep the two keys (id_rsa and id_rsa.pub) somewhere else to keep the connection work once the local computer changed.