In this tutorial, we’ll walk you through how to install Odoo 11 using Git source and Python virtual environment on your CentOS 7 machine.

Odoo is the most popular all-in-one business software in the world packed up a range of business applications, including CRM, website, billing, accounting, e-Commerce, manufacturing, warehouse, project management, inventory and more.

Odoo 11 requires Python 3.5 which is not available in the CentOS repositories. Because of that we cannot install the Odoo package via yum from the Odoo repository.

Update the system to the latest packages:

sudo yum update

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Enable the EPEL repository by typing:

sudo yum install epel-release
 

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We will install Python 3.5 packages from the Software Collections (SCL) repository. By enabling SCL you will gain access to the newer versions of programming languages and services which are not available in the core repositories. Enable the SCL repository with the following command:

sudo yum install centos-release-scl
 

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Install Python 3.5 packages, with the following command:

sudo yum install rh-python35

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Finally install git, pip and all the tools required to build Odoo dependencies:

sudo yum install git gcc wget nodejs-less libxslt-devel bzip2-devel openldap-devel libjpeg-devel freetype-devel postgresql-devel

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Create a new system user and group with home directory /opt/odoo that will run the Odoo service:

sudo useradd -m -U -r -d /opt/odoo -s /bin/bash odoo

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You can name the user whatever you like, just make sure you create a PostgreSQL user with the same name.

Install the PostgreSQL server and create a new PostgreSQL database cluster:

sudo yum install postgresql-server
sudo postgresql-setup initdb

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Once the installation is completed, enable and start the PostgreSQL service:

sudo systemctl enable postgresql
sudo systemctl start postgresql

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Create a PostgreSQL user with the same name as the previously created system user, in our case odoo:

sudo su - postgres -c "createuser -s odoo"

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The wkhtmltox package provides a set of open source command line tools which can render HTML into PDF and various image formats. In order to print PDF reports, you will need the wkhtmltopdf tool. The recommended version for Odoo is 0.12.1 which is not available in the official CentOS 7 repositories. To download and install the recommended version run the following commands:

wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.1/wkhtmltox-0.12.1_linux-centos7-amd64.rpm
sudo yum localinstall wkhtmltox-0.12.1_linux-centos7-amd64.rpm

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We will install Odoo from the GitHub repository so we can have more control over versions and updates. We will also use virtualenv which is a tool to create isolated Python environments.

Before starting with the installation process, make sure you switch to odoo user.

sudo su - odoo

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To confirm that you are logged-in as odoo user you can use the following command:

whoami

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Now we can start with the installation process, first clone the odoo from the GitHub repository:

git clone https://www.github.com/odoo/odoo --depth 1 --branch 11.0 /opt/odoo/odoo11

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Enable software collections so we can access the python 3.5 binaries:

scl enable rh-python35 bash

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Create a new virtual environment for our Odoo installation with:

cd /opt/odoo
python3 -m venv odoo11-venv

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activate the environment:

source odoo11-venv/bin/activate

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and install all required Python modules:

pip3 install -r odoo11/requirements.txt

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If you encounter any compilation errors during the installation, make sure that you installed all of the required dependencies listed in the Before you begin section.

Once the installation is completed deactivate the environment ans switch back to your sudo user using the following commands:

deactivate && exit
exit

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If you plan to install custom modules it is best to install those modules in a separate directory. To create a new directory for the custom modules run:

sudo mkdir /opt/odoo/odoo11-custom-addons
sudo chown odoo: /opt/odoo/odoo11-custom-addons

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Next, we need to create a configuration file::

/etc/odoo11.conf

[options]
; This is the password that allows database operations:
admin_passwd = superadmin_passwd
db_host = False
db_port = False
db_user = odoo
db_password = False
addons_path = /opt/odoo/odoo11/addons
; If you are using custom modules
; addons_path = /opt/odoo/odoo11/addons,/opt/odoo/odoo11-custom-addons

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Do not forget to change the superadmin_passwd to something more secure and adjust the addons_pathif you’re using custom modules.

To run odoo as a service we will create a odoo11.service unit file in the /etc/systemd/system/directory with the following contents:

/etc/systemd/system/odoo11.service

[Unit]
Description=Odoo11
Requires=postgresql.service
After=network.target postgresql.service

[Service]
Type=simple
SyslogIdentifier=odoo11
PermissionsStartOnly=true
User=odoo
Group=odoo
ExecStart=/usr/bin/scl enable rh-python35 -- /opt/odoo/odoo11-venv/bin/python3 /opt/odoo/odoo11/odoo-bin -c /etc/odoo11.conf
StandardOutput=journal+console

[Install]
WantedBy=multi-user.target

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Notify systemd that we created a new unit file and start the Odoo service by executing:

sudo systemctl daemon-reload
sudo systemctl start odoo11

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You can check the service status with the the following command:

sudo systemctl status odoo11

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● odoo11.service - Odoo11
   Loaded: loaded (/etc/systemd/system/odoo11.service; disabled; vendor preset: disabled)
   Active: active (running) since Wed 2018-03-28 20:13:30 UTC; 6s ago
 Main PID: 16174 (scl)
   CGroup: /system.slice/odoo11.service
           ├─16174 /usr/bin/scl enable rh-python35 -- /opt/odoo/odoo11-venv/bin/python3 /opt/odoo/odoo11/odoo-bin -c /etc/odoo11.conf
           ├─16175 /bin/bash /var/tmp/sclihoNjg
           └─16178 /opt/odoo/odoo11-venv/bin/python3 /opt/odoo/odoo11/odoo-bin -c /etc/odoo11.conf

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and if there are no errors you can enable the Odoo service to be automatically started at boot time:

sudo systemctl enable odoo11

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If you want to see the messages logged by the Odoo service you can use the command below:

sudo journalctl -u odoo11

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Open your browser and type: http://<your_domain_or_IP_address>:8069

Assuming the installation is successful, a screen similar to the following will appear:

If you can’t access the page then probably your firewall is blocking port 8069.