====== Install OnlyOffice Document Server on Ubuntu ======

===== Preequites to OnlyOffice Document Server Community Edition =====

Dependencies for OnlyOffice document server are Nginx webserver, PostgreSQL database server, Node.js, Redis Server, and RabbitMQ server.
==== Install PostgreSQL ====

<code>sudo apt install postgresql</code>

==== Create OnlyOffice Database, Username and Password in PostgreSQL ====

**Both the username and password are required to be 'onlyoffice'**

Create Only Office database within PostgreSQL (Not MySQL):

<code>sudo -i -u postgres psql -c "CREATE DATABASE onlyoffice;"</code>

Create the OnlyOffice user.  

<code>sudo -i -u postgres psql -c "CREATE USER onlyoffice WITH password 'onlyoffice';"</code>

Grant Permissions for the user on the OnlyOffice database:

<code>sudo -i -u postgres psql -c "GRANT ALL privileges ON DATABASE onlyoffice TO onlyoffice;"</code>

===== Install NodeJS =====

OnlyOffice document server requires nodejs version 8.12.0+, but the version in Ubuntu repository is outdated, so we will need to install the latest LTS version (12.13.1) of Node.js from upstream repository.

==== Add Node.js repostiory ====


<code>curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -</code>

**Install Node.js.**

<code>sudo apt install nodejs -y</code>

**Check Node.js version.**

<code>node -v</code>

**Sample output:**

<QUOTE>v12.18.0</QUOTE>

Install Redis server and Rabbitmq

<code>sudo apt install redis-server rabbitmq-server</code>

Check their status.

<code>systemctl status redis-server

systemctl status rabbitmq-server</code>

Status should show these are active (running).  If rabbitmq-server failed to start, that’s mostly because of low memory on the machine or invalid hostname. Redis server listens on 127.0.0.1:6379. RabbitMQ listens on 0.0.0.0:25672 and 0.0.0.0:4369

====== Install OnlyOffice document server ======

**Add OnlyOffice repository with the following command.**

<code>echo "deb http://download.onlyoffice.com/repo/debian squeeze main" | sudo tee /etc/apt/sources.list.d/onlyoffice.list
</code>

**Import OnlyOffice public key.**

<code>sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys CB2DE8E5 </code>


Update local package index and install OnlyOffice document server. Note that the onlyoffice-documentserver package will install nginx-extras as a dependency, so if an Apache web server is running, you need to stop it first.

<code>
sudo apt update

sudo apt install onlyoffice-documentserver
</code>

During the installation process, you will be asked to enter PostgreSQL password for onlyoffice. Enter the password: 

<code>onlyoffice</code>

A Nginx server block will be installed as /etc/nginx/conf.d/ds.conf. (It’s actually a symbolic link to /etc/onlyoffice/documentserver/nginx/ds.conf.) The OnlyOffice document server is a nodejs web application and Nginx acts as the reverse proxy.  /var/www/onlyoffice/documentserver/ is the web root directory.

Once the installation is finished, enter your server’s public IP address in web browser, you should see “Document Server is running”