Server configuration for Rails: Creation of admin user.

RailsServerConfig_01_admin_user

# Some steps were taken from: http://blog.sofasurfer.org/2011/07/16/ubuntu-ec2-add-new-admin-user/

# Create new user and follow the steps
sudo adduser MyAppName

# Add the user to the admin group to have sudo access
sudo adduser MyAppName admin

# If you want to allow sudo access without password (Insecure)
sudo visudo
#Add this line to the file
MyAppName     ALL=(ALL) NOPASSWD:ALL

#Now you can follow one of the following options to have access to your server:

##Option A##
  # Exit your server
  exit

  # Copy your rsa public key in your computer
  cat .ssh/id_rsa.pub

  # Access your server and append the key to your authorized keys
  vim .ssh/authorized_keys
  ---- OPTION DONE ---

##Option B##
  # Generate your rsa key
  ssh-keygen -t rsa

  # Rename your keys
  mv .ssh/id_rsa .ssh/id_MyAppName_rsa
  mv .ssh/id_rsa.pub .ssh/id_MyAppName_rsa.pub

  # Add the public key to the authorized keys
  cat .ssh/id*.pub > .ssh/authorized_keys

  # Copy keys to tmp folder to download
  cp .ssh/id* /tmp
  chmod 644 /tmp/id*

  # Exit the server
  exit

  # Copy the public key from the server to your .ssh folder
  scp MyAppName@mydomain.com:/tmp/id_MyAppName_rsa .ssh/

  # Change the permissions of your key
  chmod 400 .ssh/id_MyAppName_rsa

  #Login the server and remove the keys from the tmp folder
  rm -rf /tmp/id*
  ---- OPTION DONE ---

# Change the permissions to the .ssh folder
chmod 700 .ssh

# Change the permissions of the files inside .ssh
chmod 600 .ssh/*