Etherpad Lite Install + Postgresql

Create user

sudo adduser --system --home=/opt/etherpad --group etherpad

Install and run

sudo su - etherpad -s /bin/bash 

mkdir -p ~/local/etherpad

cd ~/local/etherpad

git clone git://github.com/ether/etherpad-lite.git

cd etherpad-lite

bin/run.sh 

Install PostgreSQL client for node.js

sudo npm install pg

Logrotate

#check with logrotate -d /etc/logrotate.d/etherpad-lite
/var/log/etherpad-lite/*.log
{
        rotate 4
        weekly
        missingok
        notifempty
        compress
        delaycompress
        sharedscripts
        postrotate
                restart etherpad-lite >/dev/null 2>&1 || true
        endscript
}

Modify settings.json

#Comment lines
/*
"dbSettings" : {
                   "filename" : "var/dirty.db"
                 },
*/
#Add postgresql configuration
   "dbSettings" : {
                    "user"    : "etherpad",
                    "host"    : "127.0.0.1",
                    "password": "**********",
                    "database": "etherpad"
                  },
                 
#Add user for API and admin
"users": {
    "admin": {
      "password": "**********",
      "is_admin": true
    },
    "api-user": {
      "password": "***********",
      "is_admin": false
    }
  },

Postgresql database

#Create postgresql user and database
sudo su postgres
createuser --createdb --username postgres --no-createrole --no-superuser --pwprompt etherpad
psql -U postgres
Password for user postgres:*******

psql (9.4.4)
Type "help" for help.

postgres=# create database etherpad;
postgres=# alter database etherpad owner to etherpad;

Reverse Proxy Nginx

#Put over server section
map $http_upgrade $connection_upgrade {
        default upgrade;
        ''      close;
    }

#put inside server section
location /pad {
        rewrite                /pad/(.*) /$1 break;
        rewrite                ^/pad$ /pad/ permanent;
        proxy_pass             http://localhost:9001/;
        proxy_pass_header Server;
        proxy_redirect         / /pad/;
        proxy_set_header       Host $host;
        proxy_buffering off;
    }

    location /pad/socket.io {
        rewrite /pad/socket.io/(.*) /socket.io/$1 break;
        proxy_pass http://localhost:9001/;
        proxy_redirect         / /pad/;
        proxy_set_header Host $host;
        proxy_buffering off;
        proxy_set_header X-Real-IP $remote_addr;  # http://wiki.nginx.org/HttpProxyModule
        proxy_set_header Host $host;  # pass the host header                                         $
        proxy_http_version 1.1;  # recommended with keepalive connections                            $
        # WebSocket proxying - from http://nginx.org/en/docs/http/websocket.html
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    location /static {
        rewrite /static/(.*) /static/$1 break;
        proxy_pass http://localhost:9001/;
        proxy_set_header Host $host;
        proxy_buffering off;
    }        

Upstar service

#create file /etc/init/etherpad.conf
#with the next content
description "etherpad-lite"

start on started networking
stop on runlevel [!2345]

env EPHOME=/opt/etherpad/local/etherpad/etherpad-lite
env EPLOGS=/var/log/etherpad-lite
env EPUSER=etherpad
env EPLITE_BIN="bin/run.sh"
respawn

pre-start script
    cd $EPHOME
    mkdir $EPLOGS                              ||true
    chown $EPUSER:admin $EPLOGS                ||true
    chmod 0755 $EPLOGS                         ||true
    chown -R $EPUSER:admin $EPHOME/var         ||true
end script

script
  cd $EPHOME/
  exec su -s /bin/sh -c 'exec "$0" "$@"' $EPUSER -- node node_modules/ep_etherpad-lite/node/server.js \
                        >> $EPLOGS/access.log \
                        2>> $EPLOGS/error.log
end script