Install Odoo 11 on CentOS 7

Fire bellow commands for install Oddo 11 on CentOs Machine

Fresh OS installation with minimal configuration and 

turn off TUN/TAP if its enable in machine (optional)

Login as root and Run bellow given commands one by one:

yum update

yum install epel-release

yum install centos-release-scl

yum install rh-python35

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

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

yum install postgresql-server

postgresql-setup initdb

systemctl enable postgresql
systemctl start postgresql

su - postgres -c "createuser -s odoo"

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

sudo su - odoo

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

scl enable rh-python35 bash

cd /opt/odoo

python3 -m venv odoo11-venv

source odoo11-venv/bin/activate

pip3 install -r odoo11/requirements.txt

deactivate && exit
exit

mkdir /opt/odoo/odoo11-custom-addons

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

--------------------------------------------------------------------

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

Then, we need to create a system file::  /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

systemctl daemon-reload
systemctl start odoo11

systemctl enable odoo11

journalctl -u odoo11

Open your browser and type: http://<your_domain_or_IP_address>:8069 Assuming the installation is successful