Odoo 12 consists of many new modules and new features. There are various steps to be followed to install Odoo 12 on Ubuntu 18.4.

1. Install Odoo 12 On Ubuntu 18.4

2.  The latest version Odoo 12 includes new features and
new modules. To Install Odoo 12 on Ubuntu 18.04 you
just need to follow the below steps.
STEP 1:
 To Update apt source-lists :
sudo apt-get update
STEP 2 :
 Install Updates Follow the bellow command:
sudo apt-get -y upgrade

3. STEP 3 :
 Create the a Odoo12 user which will own and run the
application.
sudo adduser --system --home=/opt/odoo --group odoo
STEP 4 :
 We use PostgreSQL so Install PostgreSQL Database and
configure it.
sudo apt-get install -y postgresql
 Once the PostgreSQL installation is completed, we need
to create a postgres user to communicate with Odoo user.

4. sudo service postgresql start
sudo su - postgres
createuser --createdb --username postgres --no-createrole –no-
superuser --pwprompt odoo
 Give a role password for the newly created role and verify
it by giving password again.
Exit
STEP 5 :
 Install pip3 in our server
sudo apt-get install -y python3-pip

5. Install Python Dependencies for Odoo 12
 To switch in to the odoo user and install the dependency
packages.
pip3 install Babel decorator docutils ebaysdk feedparser gevent greenlet
html2text Jinja2 lxml Mako MarkupSafe mock num2words ofxparse passlib
Pillow psutil psycogreen psycopg2 pydot pyparsing PyPDF2 pyserial python-
dateutil python-openid pytz pyusb PyYAML qrcode reportlab requests six
suds-jurko vatnumber vobject Werkzeug XlsxWriter xlwt xlrd
STEP 6 :
 Odoo Web Dependencies

6. sudo apt-get install -y npm
sudo ln -s /usr/bin/nodejs /usr/bin/node
sudo npm install -g less less-plugin-clean-css
sudo apt-get install -y node-less
sudo python3 -m pip install libsass
STEP 7 :
 Install Odoo community version 12 which is available in
GITHUB.
 Below command to install GIT on your system. If it is
already there, then you can ignore this.
sudo apt-get install -y git

7.  Switch to the Odoo user:
sudo su - odoo -s /bin/bash
 Clone branch 12.0 of Odoo from Github:
git clone https://www.github.com/odoo/odoo --depth 1 --branch 12.0 --
single-branch
 And exit from the odoo user
exit
STEP 8 :
 Create configuration file to run as a service.
 Copy and paste below content in config file , write correct
addons paths

8. sudo vim /etc/odoo-server.conf
[options]
; This is the password that allows database operations:
; admin_passwd = admin
db_host = False
db_port = False
db_user = odoo
db_password = False
logfile = /var/log/odoo/odoo-server.log
addons_path =
/opt/odoo/odoo/addons,/opt/odoo/odoo/odoo/addons

9.  Now set the ownership and permission of the
configuration file:
sudo chown odoo: /etc/odoo-server.conf
sudo chmod 640 /etc/odoo-server.conf
STEP 9 :
 Create Odoo Log File
sudo mkdir /var/log/odoo
sudo chown odoo:root /var/log/odoo

10. STEP 10 :
 You can copy and paste the script to this file.
sudo vim /etc/init.d/odoo-server
 Now change the ownership and permission of the file.
The init script will be run by the root user.
sudo chmod 755 /etc/init.d/odoo-server
sudo chown root: /etc/init.d/odoo-server
STEP 11 :
 Test the server running as service
 To start the Odoo sever:
sudo /etc/init.d/odoo-server start

11.  For stopping the Odoo server:
sudo /etc/init.d/odoo-server stop
 To view the log file of odoo server:
tailf /var/log/odoo/odoo-server.log
 Now, if you want to add this service to begin on boot up
update-rc.d odoo-server defaults
STEP 12 :
 Running Odoo 12 Local System
 Swich to the Odoo user
sudo su – odoo -s /bin/bash

12.  Run the server
/opt/odoo/odoo-bin
 If everything is fine, then you can check Odoo server
running on your browser with url:
http://localhost:8069
or
http://0.0.0.0:8069
STEP 13 :
 If wkhtmltopdf is not installed in your system, You cannot
print any pdf reports and it will show you the error ‘Unable
to find Wkhtmltopdf on this system‘.

13.  To overcome this error, install the right version of
wkhtmltopdf as below.
sudo wget
https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/
0.12.1/wkhtmltox-0.12.1_linux-trusty-amd64.deb
sudo dpkg -i wkhtmltox-0.12.1_linux-trusty-amd64.deb
sudo cp /usr/local/bin/wkhtmltopdf /usr/bin
sudo cp /usr/local/bin/wkhtmltoimage /usr/bin

14. THANKYOU
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