Debian8VpsSetup-Help-Supported.md

Login to VPS

ssh root@vps_host_ip

Change vim Comment color

Open vimrc file
    sudo vim /usr/share/vim/vimrc
    
Add line below
  hi Comment      ctermfg=lightblue

Check and Set locale

locale
locale -a

Uncomment locale that you need (for example en_US.UTF-8, uk_UA.UTF-8)
  sudo vim /etc/locale.gen
  
sudo dpkg-reconfigure locales
  And choose en_US.UTF-8 from above
  
Add to .bashrc      
  export LC_ALL="en_US.UTF-8"
  export LANGUAGE="en_US:en"
 
source .bashrc
sudo reboot
Login to VPS again and check your locale

Create and setup a new user

adduser deploy

Root Privileges
  gpasswd -a deploy sudo
  
Key Authentication (from your local system)
  ssh-add -l                            ==> List of available keys
  ssh-add -D                            ==> Clean out all keys if you have a couple
  ssh-add ~/.ssh/id_rsa                 ==> Add necessary key
  ssh-copy-id deploy@SERVER_IP_ADDRESS
  
  The corresponding private key can now be used to log into the server
  Now try logging into the vps without password, with:   ssh deploy@SERVER_IP_ADDRESS

Disallow remote ssh access to the root account

 ssh deploy@SERVER_IP_ADDRESS
 sudo vim /etc/ssh/sshd_config
 
 Modify this below line to "no"
   PermitRootLogin yes
   
 Uncomment line below and set to 'no'
   PasswordAuthentication yes
   
 Type this to restart SSH:  
   sudo service ssh restart
   
Now you can login to vps by ssh deploy key ONLY

Add locales for 'deploy' user

Add to .bashrc      
  export LC_ALL="en_US.UTF-8"
  export LANGUAGE="en_US:en"

source .bashrc

unlogin - login to system

locale

Install Ruby using rbenv

Update and install dependencies
  sudo apt-get update
  
Install the dependencies required for rbenv and Ruby
  sudo apt-get install autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev
  
Install git
  sudo apt-get update
  sudo apt-get install git

Install rbenv
  cd 
  git clone https://github.com/rbenv/rbenv.git ~/.rbenv
  echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
  echo 'eval "$(rbenv init -)"' >> ~/.bashrc
  exec $SHELL
  
Install ruby-build
  git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
  echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
  exec $SHELL
  
Install plugin that lets you set global and project-specific environment variables
  git clone https://github.com/rbenv/rbenv-vars.git $(rbenv root)/plugins/rbenv-vars

Setup ruby
  rbenv install 2.3.0
  rbenv global 2.3.0
  ruby -v
  gem install bundler --no-rdoc --no-ri
  rbenv rehash

Install Postgresql

sudo apt-get install postgresql postgresql-contrib libpq-dev

Add new user of postgresql
  sudo su - postgres OR sudo su postgres
  createuser user_name -s
  psql
  \du
  \password user_name

Install NodeJs

sudo apt-get install curl
curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs
nodejs --version

Deploy your project to vps with capistrano https://gist.github.com/stadniklksndr/13fa12e1c0fdb713d2ea60b26dac4e26