Reading Private Key from ENV variables and storing it in yaml using erb template

1. Convert new line char into double new line char e.g from \n to \n\n
2. On YAML file, suround it using double quotes

key: "<%= ENV['PRIVATE_KEY'] %>"

Mina install

• Create deploy user with sudo

/usr/sbin/adduser deploy sudo

• Allow using sudo without password
  • Open visudo

    sudo visudo
    

  • append

    deploy ALL=(ALL) NOPASSWD: ALL
    

• Setup ssh forwarding https://dchua.com/2013/08/29/properly-using-ssh-agent-forwarding-in-capistrano/
  • Check ssh-add -L
  • run ssh-add if not exists
  • Allow agent forwarding

    On Server

    # /etc/ssh/sshd_config
    AllowAgentForwarding yes
    

    On Client

    # /etc/ssh_config file
    

    On Server

    Host *
      SendEnv LANG LC_*
      ForwardAgent no yes
    

• Install rbenv and ruby's dependencies

  Add rbenv path and init BEFORE the interactive shell checks