Deploy rails 4 with postgresql

deploy.sh

### ssh to root in terminal with your server ip
ssh root@123.123.123.123

### Create new user
adduser deploy

### Set new users privileges
visudo

### Find user privileges section

# User privilege specification
root  ALL=(ALL:ALL) ALL

### Add your new user privileges under root & cntrl+x then y to save
deploy ALL=(ALL:ALL) ALL

### Configure SSH
nano /etc/ssh/sshd_config

### Find and change port to one that isn't default(22 is default: choose between 1025..65536)
Port 22 # change this to whatever port you wish to use
Protocol 2
PermitRootLogin no

### Add to bottom of sshd_config file after changing port (cntrl+x then y to save)
UseDNS no
AllowUsers deploy

### Reload ssh
service ssh restart
# se der erro reinicia a maquina ... sudo reboot now

### Don't close root! Open new shell and ssh to vps with new username(remember the port, or you're locked out!)
ssh deploy@123.123.123.123

### Update packages on virtual server
sudo apt-get update

# General dependencies
sudo apt-get install htop curl git git-svn gitk ssh libssh-dev nodejs imagemagick libmagickwand-dev libav-tools redis-server libhiredis-dev -y

### install latest stable version of rvm
command curl -sSL https://rvm.io/mpapis.asc | gpg --import -
curl -L https://get.rvm.io | bash -s stable
source ~/.rvm/scripts/rvm
rvm requirements
rvm install 2.2.4
gem install rails

### Install PG, mysql is for newbies
sudo apt-get install postgresql postgresql-contrib postgresql-server-dev-9.5

### Como estamos falando de uma máquina de desenvolvimento, vamos criar um superuser:
sudo su postgres
createuser -P -s -e deploy

### Você deve editar o arquivo pg_hba.conf com sudo nano /etc/postgresql/9.5/main/pg_hba.conf e faça o final dele estar assim:

# Database administrative login by Unix domain socket
local   all             postgres                                trust

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            trust
# IPv6 local connections:
host    all             all             ::1/128                 trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                peer
#host    replication     postgres        127.0.0.1/32            md5
#host    replication     postgres        ::1/128                 md5


### Install git
sudo apt-get install git git-svn gitk ssh libssh-dev


### Install passenger
sudo apt-get install libcurl4-openssl-dev
gem install passenger
sudo chown -R `whoami` /opt

### IMPORTANT, if your droplet have <= 1024mb ram you need swap memory, its get local HDD and add to ram.
### Passenger need more 1024 to install, this trick solve it on smallest droplets.
# Allocate memory 1024mb
sudo dd if=/dev/zero of=/swap bs=1M count=1024
sudo mkswap /swap
sudo swapon /swap

#### Install passenger 
passenger-install-nginx-module --auto-download --auto

# Unallocate memory
sudo swapoff /swap


### Nginx conf
sudo nano /opt/nginx/conf/nginx.conf

### Add woner to repo
sudo chown -R deploy /opt

### Fazer nginx iniciar sozinho quando restartar a maquina
wget -O init-deb.sh http://library.linode.com/assets/660-init-deb.sh
sudo mv init-deb.sh /etc/init.d/nginx
sudo chmod +x /etc/init.d/nginx
sudo /usr/sbin/update-rc.d -f nginx defaults


### Comands to nginx
sudo service nginx start
sudo service nginx stop
sudo service nginx restart


# Usefull commands
sudo nano /opt/nginx/conf/nginx.conf
passenger-config restart-app

# Limpa os assets
RAILS_ENV=production rake assets:precompile
rake assets:clobber
rake assets:clean