How to Install Odoo 13 on a CentOS 8 Server

In this tutorial, we will show you how to install Odoo 13 ERP software on a CentOS 8 VPS. Odoo is one of the most popular enterprise resource planning (ERP) platforms ever made. Built using Python and utilizing PostgresSQL for its database, Odoo is 100% open-source and free. Odoo also has a rich feature set – it comes with a wide range of business applications such as CRM, POS, Website builder, Warehouse Management, Project Management, eCommerce, Marketing, Billing & Accounting, Manufacturing, and lots more.

Odoo apps are integrated with each other and allow you to fully automate your business processes. The main feature of Odoo is its intuitive interface and drag & drop editor that allows you to quickly manage your content. Odoo also supports third-party modules, further allowing you to expand the functionality to fit your exact needs.

Let’s start with the installation, which shouldn’t take too long.

Prerequisites

  • A CentOS 8 VPS with root access enabled (our VPSes all have root access) or a user with sudo privileges.
  • At least 2 GB of RAM.

Log in via SSH and Update your Server

First, you will need to log in to your CentOS 8 VPS via SSH as the root user:

ssh [email protected]_ADDRESS -p PORT_NUMBER

Replace IP_ADRRESS and PORT_NUMBER with the values for your VPS. IP_ADDRESS is required, and PORT_NUMBER is 22 by default, but may be different depending on your setup.

Next, run the following commands to upgrade all installed packages on your VPS:

dnf update -y

Once all the packages are updated, restart your system to apply the changes. This ensures a clean slate on which we’ll be installing our Odoo instance.

Install Required Dependencies

First, you will need to install Python package and other Odoo dependencies in your system. You can install all of them using the following command:

dnf install python3 python3-devel git gcc redhat-rpm-config libxslt-devel bzip2-devel openldap-devel libjpeg-devel freetype-devel curl unzip -y

Once all the packages are installed, you will need to install wkhtmltopdf package in your system. Wkhtmltopdf is an open-source tool that can be used to converts the HTML format to PDF so that Odoo can print PDF reports.

You can install it by running the following command:

dnf install https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox-0.12.5-1.centos8.x86_64.rpm

Once you are finished, you can proceed to the next step.

Install and Configure PostgreSQL

Odoo uses PostgreSQL to store its data. You can install the PostgreSQL server with the following command:

dnf install postgresql postgresql-server postgresql-contrib -y

Once the installation is completed, initialize the database with the following command:

postgresql-setup initdb

You should get the following output:

* Initializing database in '/var/lib/pgsql/data'
* Initialized, logs are in /var/lib/pgsql/initdb_postgresql.log

Next, start the PostgreSQL service and enable it to start at boot with the following command:

systemctl start postgresql
systemctl enable postgresql

Next, log in to the PostgreSQL shell and create a new PostgreSQL user with the following command:

su - postgres -c "createuser -s odoo13"

Install and Configure Odoo 13

Before starting, create a separate user in CentOS which we’ll use to run the Odoo service.

useradd -m -U -r -d /opt/odoo13 -s /bin/bash odoo13

Note : Make sure the username must be the same as PostgreSQL user.

Next, log in with your odoo13 user and download Odoo 13 from the GitHub repository:

su - odoo13
git clone https://www.github.com/odoo/odoo --depth 1 --branch 13.0 /opt/odoo13/odoo

You should get the following output:

Cloning into '/opt/odoo13/odoo'...
warning: redirecting to https://github.com/odoo/odoo.git/
remote: Enumerating objects: 28242, done.
remote: Counting objects: 100% (28242/28242), done
remote: Compressing objects: 100% (23893/23893), done.
Receiving objects: 96% (27370/28242), 110.95 MiB | 13.39 MiB/s
remote: Total 28242 (delta 8481), reused 10433 (delta 3462), pack-reused 0
Receiving objects: 100% (28242/28242), 120.16 MiB | 9.46 MiB/s, done.
Resolving deltas: 100% (8481/8481), done.
Checking out files: 100% (25288/25288), done.

Next, change your current working directory to /opt/odoo13 and create a new Python virtual environment with the following command:

cd /opt/odoo13
python3 -m venv odooenv

Next, activate the virtual environment with the following command:

source odooenv/bin/activate

Once that is done, install all required Python modules with the following command:

pip3 install -r odoo/requirements.txt

After installing all modules, deactivate the environment with the following command:

deactivate

Next, create a new directory to store the custom addons:

mkdir /opt/odoo13/odoo-custom-addons

From there, exit from the Odoo13 user with the following command:
exit

Finally, create a new Odoo 13 configuration file with your database details, master password and addons path:

nano /etc/odoo13.conf

Add the following lines to the file:

[options]
admin_passwd = your-secure-password
db_host = False
db_port = False
db_user = odoo13
db_password = False
addons_path = /opt/odoo13/odoo/addons, /opt/odoo13/odoo-custom-addons

Make sure you set a strong password. Save and close the file.

Create a Systemd Unit File for Odoo 13

Using systemd to easily start and stop your Odoo instance is very convenient. This step is not mandatory, but it adds a great quality-of-life feature that is nice to have, and it makes managing Odoo that much easier.

You can create the service with the following command:

nano /etc/systemd/system/odoo13.service

Open the file, and add the following lines:

[Unit]
Description=Odoo13
Requires=postgresql.service
After=network.target postgresql.service
[Service]
Type=simple
SyslogIdentifier=odoo13
PermissionsStartOnly=true
User=odoo13
Group=odoo13
ExecStart=/opt/odoo13/venv/bin/python3 /opt/odoo13/odoo/odoo-bin -c /etc/odoo13.conf
StandardOutput=journal+console
[Install]
WantedBy=multi-user.target

Save and close the file then reload the systemd daemon with the following command:

systemctl daemon-reload

Next, start the Odoo 13 service and enable it to start at boot with the following command:

systemctl start odoo13
systemctl enable odoo13

You can verify the status of Odoo 13 with the following command:

systemctl status odoo13

You should get the following output:

● odoo13.service - Odoo13
Loaded: loaded (/etc/systemd/system/odoo13.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2020-05-24 08:35:45 EDT; 3s ago
Main PID: 23874 (python3)
Tasks: 4 (limit: 25028)
Memory: 60.8M
CGroup: /system.slice/odoo13.service
└─23874 /opt/odoo13/venv/bin/python3 /opt/odoo13/odoo/odoo-bin -c /etc/odoo13.conf
May 24 08:35:45 centos8 systemd[1]: Started Odoo13.
May 24 08:35:46 centos8 odoo13[23874]: /opt/odoo13/venv/lib64/python3.6/site-packages/psycopg2/__init__.py:144: UserWarning: The psycopg2 whee>
May 24 08:35:46 centos8 odoo13[23874]: """)
May 24 08:35:46 centos8 odoo13[23874]: 2020-05-24 12:35:46,298 23874 INFO ? odoo: Odoo version 13.0
May 24 08:35:46 centos8 odoo13[23874]: 2020-05-24 12:35:46,299 23874 INFO ? odoo: Using configuration file at /etc/odoo13.conf
May 24 08:35:46 centos8 odoo13[23874]: 2020-05-24 12:35:46,300 23874 INFO ? odoo: addons paths: ['/opt/odoo13/odoo/odoo/addons', '/opt/odoo13/>
May 24 08:35:46 centos8 odoo13[23874]: 2020-05-24 12:35:46,300 23874 INFO ? odoo: database: [email protected]:default
May 24 08:35:46 centos8 odoo13[23874]: 2020-05-24 12:35:46,893 23874 INFO ? odoo.addons.base.models.ir_actions_report: Will use the Wkhtmltopd>
May 24 08:35:47 centos8 odoo13[23874]: 2020-05-24 12:35:47,367 23874 INFO ? odoo.service.server: HTTP service (werkzeug) running on centos8:80>
lines 1-18/18 (END)

At this point, Odoo is running and listening on port 8069. You can already access it from a browser by specifying the IP and Port for Odoo.

Configure Nginx as a Reverse Proxy

It is a good idea to configure Nginx as a reverse proxy for Odoo. This is done so that you can access the Odoo instance without needing to specify the port every time. Nginx is a popular web server focused on customizability and versatility.

First, install Nginx with the following command:

dnf install nginx -y

Once installed, create a new Nginx virtual host configuration file:

nano /etc/nginx/conf.d/odoo13.example.conf

Add the following lines:

upstream odoo {
server 127.0.0.1:8069;
}
upstream odoochat {
server 127.0.0.1:8072;
}
server {
listen 80;
server_name odoo13.example.com;
proxy_read_timeout 720s;
proxy_connect_timeout 720s;
proxy_send_timeout 720s;
# Proxy headers
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Real-IP $remote_addr;
# log files
access_log /var/log/nginx/odoo13.access.log;
error_log /var/log/nginx/odoo13.error.log;
# Handle longpoll requests
location /longpolling {
proxy_pass http://odoochat;
}
# Cache static files
location ~* /web/static/ {
proxy_cache_valid 200 90m;
proxy_buffering on;
expires 864000;
proxy_pass http://odoo;
}
gzip_types text/css text/less text/plain text/xml application/xml application/json application/javascript;
gzip on;
}

You should replace “example.com” with your registered domain name.

Save and close the file. Then, you will need to configure hash_bucket_site in Nginx default configuration file.

Open the Nginx default configuration file as shown below:

nano /etc/nginx/nginx.conf

Add the following line below the line http {:

server_names_hash_bucket_size 64;

Save and close the file. Then, check Nginx for any syntax errors with the following command:

nginx -t

You should get the following output:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Finally, start the Nginx service and enable it to start at boot with the following command:

systemctl start nginx
systemctl enable nginx

Next, you will also need to configure Odoo to use the proxy. You can do it by editing the file /etc/odoo13.conf:

nano /etc/odoo13.conf

Add the following line to the end of the file:

proxy_mode = True

Save and close the file, then restart the Odoo 13 service to implement the changes:

systemctl restart odoo13

Secure Odoo 13 with Let’s Encrypt

It is recommended to secure the Odoo instance with Let’s Encrypt SSL. This is not a mandatory step, but it provides secure connections for your Odoo instance.

First, install the Certbot client in your system to manage the SSL:

wget https://dl.eff.org/certbot-auto
mv certbot-auto /usr/local/bin/certbot-auto
chmod 0755 /usr/local/bin/certbot-auto

Now, run the following command to obtain and install an SSL certificate for your Odoo 13 website. Replace “example.com” with your registered domain name.

certbot-auto --nginx -d odoo13.example.com

The above command will first install all the required dependencies on your server. Once installed, you will be asked to provide an email
address and accept the term of service as shown below:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx
Enter email address (used for urgent renewal and security notices)
(Enter 'c' to cancel): [email protected]example.com
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Please read the Terms of Service at
https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must
agree in order to register with the ACME server at
https://acme-v02.api.letsencrypt.org/directory
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(A)gree/(C)ancel: A
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Would you be willing to share your email address with the Electronic Frontier
Foundation, a founding partner of the Let's Encrypt project and the non-profit
organization that develops Certbot? We'd like to send you email about our work
encrypting the web, EFF news, campaigns, and ways to support digital freedom.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(Y)es/(N)o: N

Make your choice and hit Enter to continue. Once the certificate has been installed, you should see the following output:

Obtaining a new certificate
Performing the following challenges:
http-01 challenge for odoo13.example.com
Waiting for verification...
Cleaning up challenges
Deploying Certificate to VirtualHost /etc/nginx/nginx.conf
Redirecting all traffic on port 80 to ssl in /etc/nginx/nginx.conf
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Congratulations! You have successfully enabled https://odoo13.example.com
You should test your configuration at:
https://www.ssllabs.com/ssltest/analyze.html?d=odoo13.example.com
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
IMPORTANT NOTES:
- Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/odoo13.example.com/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/odoo13.example.com/privkey.pem
Your cert will expire on 2020-08-22. To obtain a new or tweaked
version of this certificate in the future, simply run certbot-auto
again with the "certonly" option. To non-interactively renew *all*
of your certificates, run "certbot-auto renew"
- If you like Certbot, please consider supporting our work by:
Donating to ISRG / Let's Encrypt: https://letsencrypt.org/donate
Donating to EFF: https://eff.org/donate-le

At this point, your Odoo 13 instance is secured with Let’s Encrypt SSL.

Access the Odoo 13 Instance

Now, open your web browser and type the URL https://odoo13.example.com. You should see the following page:

 

Provide your Master password, database details, email, and password before clicking on the Create database button. You should see the Odoo 13 dashboard in the following page:

 

Congratulations, if you carefully followed our instructions in this tutorial, you will have successfully installed the latest Odoo 13 on your CentOS 8 VPS. You can create your first database and start using the latest Odoo 13 version.


Of course, you don’t have to install Odoo 13 on CentOS 8 if you use one of our Odoo VPS Hosting services, in which case you can simply ask our team of expert Linux admins to install and configure Odoo 13 for you. They are available 24×7 and will take care of your request immediately. We take the guesswork out of installing your Odoo platform – just tell us what you need and it’ll be done.

PS. If you liked this post on how to install Odoo 13 on CentOS 8, please share it with your friends on the social networks using the share shortcuts below, or simply leave a reply in the comments section. Thanks.

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