Category: Odoo

How to add Bangla Taka (৳) currency symbol in WkHTMLtoPdf / Odoo / OpenERP Qweb Report

WkHTMLtoPDF is a tool to convert html reports to PDF. Odoo/OpenERP uses this tool to generate PDF reports. If you are using an unicode character in PDF report, that character has to be installed in font package in the system. If you are using Windows, Bangla characters are available by default. But that is not same for Linux.

Bangla & Assamese fonts are available for Linux, in a package called ‘lohit’.

To install Bangla fonts in CentOS/Redhat based system, use the following:

yum install lohit-bengali-fonts

To install in Debian/Ubuntu based system, use the following:

apt install fonts-lohit-beng-bengali

Once this is installed, PDF reports should start showing the Bangla characters properly.

Happy shooting!

How to manipulate time in Odoo Qweb Report

In Odoo Qweb report, you probably want to change the time to something else, like add few hours, or change the timezone, or so on. To do that, you would need to use ‘t-esc’ template attribute of Odoo. Here is an example of how to add 6 hours to the original timestamp and then convert the time to string to show the value according to the user preference:

<span t-esc="(o.date_done + datetime.timedelta(hours=6)).strftime('%d/%m/%Y %I:%M %p')"/>

o.date_done is getting the date_done from the picking that you are visiting.

Odoo Time Showing in Form View does not match Time in Qweb Report – Timezone Mismatch

Synopsis

You are seeing a time in the Odoo form view, which is using the correct timezone, but when you try to download the report of the same form view data, you see, the timezone is changed to UTC or something else. How to fix this?

Solution

The issue appears when the user has configured a different timezone or has not, while the Odoo system uses a central timezone. Make sure to set the timezone for the user to same as the one Odoo uses. You may do so, from

Odoo >> Settings >> Users >> Select User >> Edit >> Preference >> Set Timezone

If this does not solve the problem, then the problem probably appears because Odoobot is set to use a different timezone, and your report is generated using ‘sudo()’ function. To set the timezone for Odoobot

Odoo >> Settings >> Users >> From the Filters, select ‘Inactive Users’ >> Click on Odoobot >> Edit >> Preference >> Set the Timezone

Hope this helps.

How to Install Odoo 15 in CentOS 7 – Troubleshooting Recent Errors

Installing Odoo 15 along with the CentOS 7 and the latest PGSQL repo has changed pretty a lot. I will try to cover solutions to a few errors along with the straightforward steps on installing Odoo 15 in CentOS 7.

First Step First

Update your CentOS 7 installation and install Epel-release

yum update -y
yum install epel-release

Install Python 3.8

We will use Python 3.8 for Odoo 15. We will use Software Collection Repository or SCL to install our Python binary. You may find details of SCL here:

SCL Repository

First, install SCL in CentOS:

yum install centos-release-scl -y

Once done, you can now install Python 3.8 using the following:

yum install rh-python38 -y

Also, install python38-devel as Python.h is used to compile psycopg2 and python-ldap package. From Odoo 15, you need this to get going:

yum install rh-python38-python-devel -y

Note: The above is used to resolve an error like the following

fatal error: Python.h: No such file or directory

Now, we will install a few prerequisites to install Odoo 15. One difference between the old version installed and the new is that you need to load GCC-c+ now along with the GCC compiler. Otherwise, you will see an error like the following:

gcc: error trying to exec ‘cc1plus’: execvp: No such file or directory

So, to install the pre-requisites, run the following:

yum install git gcc nano wget nodejs-less libxslt-devel bzip2-devel openldap-devel libjpeg-devel freetype-devel gcc-c++ -y

Once done, now, you can create the user odoo:

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

We are done with the primary setup, now we move to install database

Install PostgreSQL 13 in CentOS 7

To install PGSQL 13 in CentOS 7, you need to first install the pgsql official repository. You may install this using the following:

yum -y install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

Once done, now you can install PostgreSQL 13 and related things:

yum install postgresql13 postgresql13-server postgresql13-contrib postgresql13-libs -y

Once done, now can you initiate the PostgreSQL and start the database server

/usr/pgsql-13/bin/postgresql-13-setup initdb
systemctl start postgresql-13.service
systemctl enable postgresql-13.service

# create the postgres user odoo
su - postgres -c "createuser -s odoo"

Brilliant, now, one more additional thing we need to resolve. With the latest Postgresql 13, you might still not be able to use the libpq. You need to install it manually. Otherwise, you will see an error like the following:

fatal error: libpq-fe.h: No such file or directory

To resolve this error, you need to install these libraries manually with the following command:

yum install libpq5 libpq5-devel -y

Remember to install libpq5-devel as the source of the libpq would be used to compile psycopg2.

Install Wkhtmltox

Now, let’s move to the next step of installing wkhtmltox. The version for wkhtmltox has remained the same for pretty long. The following shall work till now:

cd /opt
wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox-0.12.6-1.centos7.x86_64.rpm
yum localinstall wkhtmltox-0.12.6-1.centos7.x86_64.rpm

This specific tool is used to generate reports in Odoo, without this, you might not be able to use pdf/html reports using Qweb in Odoo.

Final Step: Install and Configure Odoo 15

We will here download the source from Github and install all the dependent packages. First, we switch to the user odoo

su - odoo

Now, clone the git repo for Odoo 15 to a folder odoo15 using the following:

git clone https://www.github.com/odoo/odoo --depth 1 --branch 15.0 /opt/odoo/odoo15

Once done, now, we can enable python3.8 and create a virtual environment for our Odoo installation. First, enable the Python3.8 using scl:

scl enable rh-python38 bash

Now create a virtual environment for our Odoo15 installation:

cd /opt/odoo
python3 -m venv odoo15-venv

Activate the virtual environment we just created

source odoo15-venv/bin/activate

Now, we upgrade the pip and install wheel package:

pip install --upgrade pip
pip3 install wheel

Now, before we can install the requirements file using pip3 package installer, here is an error you will face when compiling psycopg2

Error: pg_config executable not found.

Now the problem is understandable, pg_config file is usually placed under the binary folder of pgsql which is:

/usr/pgsql-13/bin

For some reason, our installer fails to identify this. To solve the issue, we first, load this in the $PATH variable before running pip3 for requirements.

export PATH=/usr/pgsql-13/bin/:$PATH

Now, you can run the pip3 installer:

pip3 install -r odoo15/requirements.txt

This shall be complete without any error if you have solved the solutions I had given above. If any of them are missed, you should double-check all the mentioned errors above.

Now exit the venv:

deactivate && exit ; exit

Now, the first step for configuration, edit the /etc/odoo.conf file

nano /etc/odoo.conf

Paste the following:

[options]
; This is the password that allows database operations:
admin_passwd = set_the_password_to_create_odoo_database
db_host = False
db_port = False
db_user = odoo
db_password = False
addons_path = /opt/odoo/odoo15/addons
; You can enable log file with uncommenting the next line
; logfile = /var/log/odoo15/odoo.log

Replace ‘set_the_password_to_create_odoo_database’ with the one you want to use to allow odoo installer to create the database for you.

Odoo15 Service File

Now, we will create a service file to start/stop/restart our Odoo 15 installation.

nano /etc/systemd/system/odoo15.service

Paste the following:

[Unit]
Description=Odoo15
Requires=postgresql-13.service
After=network.target postgresql-13.service

[Service]
Type=simple
SyslogIdentifier=odoo15
PermissionsStartOnly=true
User=odoo
Group=odoo
ExecStart=/usr/bin/scl enable rh-python38 -- /opt/odoo/odoo15-venv/bin/python3 /opt/odoo/odoo15/odoo-bin -c /etc/odoo.conf
StandardOutput=journal+console

[Install]
WantedBy=multi-user.target

We are now done with the service installation.

Now reload the system daemon:

systemctl daemon-reload

Finally, now we can start Odoo 15 with the following:

systemctl start odoo15

Check the status:

[root@cloud-accounts ~]# systemctl status odoo15
● odoo15.service - Odoo15
   Loaded: loaded (/etc/systemd/system/odoo15.service; enabled; vendor preset: disabled)
   Active: active (running) since Mon 2021-12-27 08:47:30 EST; 42min ago
 Main PID: 5012 (scl)
   CGroup: /system.slice/odoo15.service
           ├─5012 /usr/bin/scl enable rh-python38 -- /opt/odoo/odoo15-venv/bin/python3 /opt/odoo/odoo15/odoo-bin -c /etc/odoo.conf
           ├─5013 /bin/bash /var/tmp/sclAlWADi
           └─5016 /opt/odoo/odoo15-venv/bin/python3 /opt/odoo/odoo15/odoo-bin -c /etc/odoo.conf

Dec 27 08:47:30 cloud-accounts systemd[1]: Started Odoo15.

You can enable the Odoo15 when the system reboots

systemctl enable odoo15

Now, if you want to enable logging, uncomment the following line from /etc/odoo.conf

logfile = /var/log/odoo15/odoo.log

If everything goes right, you should now be able to access the Odoo in port 8069:

http://ip:8069

How to aggregate column with non-aggregable value in an Array using Group in PostgreSQL

Let’s imagine, scenario is like the following:

We have three columns with the following values in a table named ‘sale_line’

----------------------------------------
product_id	qty_done	sale_id
----------------------------------------
1010		5.0		101
1010		1.0		102
1010		2.0		103
1012		1.0		104
1012		4.0		105
1012		4.0		106
1012		9.0		107

We have a product_id column that contains which product we are referring to, a qty_done column, which contains the number of products sold, and sale_id refers to the sale order where the product_id was dispatched. Now the example table contains how many of each product dispatched in different sale orders. We can write a query, to group the product_id and the total number of products sold using aggregation

select product_id, sum(qty_done) as total_sold from sale_line group by product_id;

The producing result would be the following:

---------------------------
product_id	total_sold
---------------------------
1010		8.0		
1012		17.0

We can see, how group by can give you the benefit of aggregation. But have you noticed, we have a column called ‘sale_id’ that doesn’t go with any aggregation function like ‘count’, ‘sum’ or ‘avg’. Can we use them for any purpose?

Sometimes, you may be interested to track down the orders responsible for a set of products using group by when each products will contain the list of orders responsible for causing the total sell. Can we accomplish that in one query?

We actually can. We can concat distinct ids and put them in a resulting array instead of our known aggregation function like ‘count’ or ‘sum’. Postgres provides a array aggregation function called ‘array_agg’, it can be used to produce such result. Have a look at the following query:

select product_id, sum(qty_done) as total_sold, array_agg(sale_id) as sale_ids from sale_line group by product_id;

The producing result would be the following:

-----------------------------------------
product_id	total_sold	sale_ids
-----------------------------------------
1010		8.0		[101, 102, 103]
1012		17.0		[104, 105, 106, 107]

As you can see, we have made postgres return us an array that contains the sale_ids for consisting total_sold even though, sale_id column wasn’t conventionally aggregable or let’s say different than the usual numeric pattern.

This technique can have many use cases. For example if you have a different model/table for managing sale orders, purchase orders, pickings and invoices while, your sale orders contains the price information, and the pickings doesn’t, but picking contains the actual number of products got dispatched, then you may first aggregate the total_sold from the picking table, then produce an average price using the sale_ids you have produced from the picking table using group by and array aggregation, then merge them. This seems quite complicated, I understand, but again, it’s all about putting a break to your reporting time, and manage scalability of your application, putting a constant cost based reporting algorithm using single sql query, even if you process 10 times more orders in future.

How to get purchase_id from stock_picking table in Odoo?

stock_picking is one of the core model for Odoo if you using Odoo for ‘Inventory’. Now, if you use ‘Sales’ module, then stock_picking would be extended with a new field for model and column for database table, naming ‘sale_id’. This can be used to detect if the picking is originated from a sale order or not. But if you install ‘Purchase’ module, then stock_picking model is extended with ‘purchase_id’ like the ‘sale_id’ for purchases, but the database isn’t expanded with a column like ‘Sale’ module.

What does this mean?

This means, if you use Odoo ORM, only then, you may use purchase_id of a stock_picking. An example could be like the following. Let’s say, we would like to pick the pickings that originated from purchase orders, aka, GRN, we could use something like this:

purchase_pickings = self.env['stock.picking'].search([('purchase_id', '!=', False)])

This works, only if you are not trying to make a report from a huge lot of pickings, purchase orders and sale orders, when you want to use SQL statement to produce efficient joins and generate the report quickly.

Let me demonstrate what I meant

We know, stock_picking has a field called sale_id and also this also belongs to the database column as well. Hence, to get all the pickings belongs to sale order, we may first use the ORM:

sale_pickings = self.env['stock.picking'].search([('sale_id', '!=', False)])

or a direct PostGRE SQL

query = """select * from stock_picking where sale_id is not null"""
self.env.cr.execute(query)
result = self.env.cr.fetchall()

Now, the second example is not only faster, but also, it allows you to extend the facility further to use joins or select specific field of a table result, which is only possible using ‘read’ Odoo ORM method, again, domain specification is not permissible like it is available in ‘search’.

We are able to do things like the following with the sql:

query = """select sale_order.name, stock_picking.name from stock_picking left join on stock_picking.sale_id = sale_order.id where stock_picking.sale_id is not null"""
self.env.cr.execute(query)
result = self.env.cr.fetchall()

This would give you a result of each sale order with it’s picking name. To produce a result like the above using ORM is costly as it follows ‘N+1’ algorithm, hence inefficient in making reports or scaling the software.

Now, we understand, we are able to use such field and make the reports efficient using SQL as sale_id is distinctively available in the database. But what if you want to check how the product has been purchased, and then sold? Then, we also need purchase_order model to connect to our above query, right? But unfortunately, as ‘Purchase’ module doesn’t add a column purchase_id, we are unable to use this directly.

So, how can we still use purchase_id in the SQL Query to generate report in Odoo?

First, we need to see, how purchase_id is added in Odoo.

purchase_id is added in stock_picking model in the ‘purchase_stock’ module. If you open the following file:

purchase_stock/models/stock.py

you may see, how purchase_id is defined as related Many2one field:

class StockPicking(models.Model):
    _inherit = 'stock.picking'

    purchase_id = fields.Many2one('purchase.order', related='move_lines.purchase_line_id.order_id',
        string="Purchase Orders", readonly=True)

A related field in Odoo, is like a pointer, a syntactic sugar of foreign key for less used fields. If the field is highly used, this might cause performance issue, as Odoo has to do multiple lookups unlike direct lookup for a related field. Now, get to the point, purchase_id is related to ‘move_lines.purchase_line_id.order_id’. This is a long relation. Let me go one by one:

  1. move_lines : stock_picking has an One2many relation with stock.move model, that derives the available moves for the picking.
  2. purchase_line_id: Each move line derived from a purchase order line, and while doing so, it keeps the ID of the purchase order line in a foreign key of stock.move model, namely purchase_line_id.
  3. order_id: Each purchase_order_line has a foreign key with the purchase.order model kept in order_id field.

Now, we know, how the purchase_id derives the purchase_order id using the following relation:

Picking > Moves > Purchase Order Line > Purchase Order

Now we can use the following kind of relation for detecting purchase order from stock picking:

select purchase_order.name, stock_picking.name from stock_picking left join stock_move on stock_move.picking_id = stock_picking.id left join purchase_order_line on purchase_order_line.id = stock_move.purchase_line_id left join purchase_order on purchase_order.id = purchase_order_line.order_id where stock_move.purchase_line_id is not null group by stock_picking.name, purchase_order.name

Here, we are able to get the picking and purchase in relation with one query. This concept can be used to derive many data, like, let’s say, you would like to see, how many of your products are purchased, then, sold and returned, all can be done in few queries, without having N+1 problem.

How to Fix Locale Font Issue with Odoo Qweb Reports

Issue

When looking at the html report in Odoo, locale fonts look ok, but if you download the Qweb report to print in pdf format, it prints gibberish. How to fix that?

Resolution

Odoo uses a templating engine for reporting called ‘Qweb’. Qweb can be used to generate two types of reports. One is HTML and the other is PDF. Odoo primarily uses Qweb engine to generate the HTML code. After that, it uses a tool called ‘wkhtmltopdf’ to convert the report to pdf and make it printable. Now when, we look at the HTML version of the report, fonts are shown based on Unicode supported browsers or the fonts you have installed on your computer. But when you try to convert this to PDF using wkhtmltopdf, that tool has to have exclusive access to those fonts to be able to convert them from HTML to pdf for you. As wkhtmlpdf command runs in the server you have installed Odoo, hence, you would need to install the font package in the server.

In my case, I required to install Bengali fonts. For CentOS, it is available under the lohit package, that contains several indian fonts including bengali. To install bengali font package in CentOS 7, use the following command:

yum install lohit-bengali* -y

Once done, your wkhtmltopdf should be able to read the bengali fonts from your html/qweb templates and able to convert them to PDF for you.

How to Add fields to res.users or res.partners model in Odoo

res.users and res.partners tables are two base tables of odoo. If you would like to inherit and extend them, remember, you can’t do it from the Odoo user view. The reason is, when you do an upgrade from the user view, it has to be something that works over base module, not base module itself. Hence, you will get a 500 error or internal server error when trying to upgrade the module.

We will make a simple module for res.users to extend the model to add a field called ‘access_token’ for each user, and generate a key automatically when a user is added.

I will only post the model file and the view file here. I expect you already know how to write an Odoo module.

This is my res_users.py file

from odoo import api, fields, models
import string, random

class res_users_ex(models.Model):
    _inherit = 'res.users'

    access_token = fields.Text(string='API Access Token', default=False)

    def create(self, vals):
        key = ''.join(random.choices(string.ascii_lowercase + string.digits, k = 48))
        user_id = super(res_users_ex, self).create(vals)
        if key:
            user_id.access_token = key

        return user_id

Here is the xml view file:

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record model="ir.ui.view" id="view_res_users_access_token">
        <field name="name">res.users.add.access.token</field>
        <field name="model">res.users</field>
        <field name="inherit_id" ref="base.view_users_form"/>
        <field name="type">form</field>
        <field name="arch" type="xml">
        <xpath expr="//notebook" position="inside">
            <page string="API Details">
               <group col="4">
                  <field name="access_token"/>
                </group>
             </page>
        </xpath>
        </field>
    </record>
</odoo>

Now, after you have added this to a module, you can not simply upgrade this from App >> Module >> Upgrade. You need to upgrade this module via command line like the following:

First switch to your odoo user, in my case, it is ‘odoo’

su - odoo

Now, first stop your current odoo with the following:

service odoo14 stop

Once done, now you can upgrade the module with the following:

/usr/bin/scl enable rh-python36 -- /opt/odoo/odoo14-venv/bin/python3 /opt/odoo/odoo14/odoo-bin -d my_database-u res_users_access_token

The command above is explained like the following:

python3 odoo-bin -d your_databasename -u module_name

In my case, I use virtual environment and scl for python, hence the python3 source is like the following:

/usr/bin/scl enable rh-python36 -- /opt/odoo/odoo14-venv/bin/python3

The next one is the binary of odoo with it’s location, which should be odoo-bin. With the parameter -d, you give your database name, and with the parameter -u, you need to give your module name. After you run the command, you should see no ‘Error’ or Red marked line in your console. If not, it shall be upgraded. Now do control + c, and start your odoo again to see the new fields being visible in your Users tab.

Odoo Error – virtual real time limit (151/120s) reached.

There are times, when you might suddenly see your Odoo is shutdown automatically, without warning. Once you enable to logging, you could see an error like the following:

virtual real time limit (151/120s) reached.

or in full details like the following

2021-04-22 06:46:44,054 32685 WARNING ? odoo.service.server: Thread <Thread(odoo.service.http.request.140015617943296, started 140015617943296)> virtual real time limit (151/120s) reached.
2021-04-22 06:46:44,054 32685 INFO ? odoo.service.server: Dumping stacktrace of limit exceeding threads before reloading
2021-04-22 06:46:44,060 32685 INFO ? odoo.tools.misc:
# Thread: <Thread(odoo.service.http.request.140015617943296, started 140015617943296)> (db:n/a) (uid:n/a) (url:n/a)
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/threading.py", line 884, in _bootstrap
  self._bootstrap_inner()
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/threading.py", line 916, in _bootstrap_inner
  self.run()
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/threading.py", line 864, in run
  self._target(*self._args, **self._kwargs)
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py", line 654, in process_request_thread
  self.finish_request(request, client_address)
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py", line 364, in finish_request
  self.RequestHandlerClass(request, client_address, self)
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/socketserver.py", line 724, in __init__
  self.handle()
File: "/opt/odoo/odoo14-venv/lib64/python3.6/site-packages/werkzeug/serving.py", line 329, in handle
  rv = BaseHTTPRequestHandler.handle(self)
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/http/server.py", line 418, in handle
  self.handle_one_request()
File: "/opt/odoo/odoo14-venv/lib64/python3.6/site-packages/werkzeug/serving.py", line 360, in handle_one_request
  self.raw_requestline = self.rfile.readline()
File: "/opt/rh/rh-python36/root/usr/lib64/python3.6/socket.py", line 586, in readinto
  return self._sock.recv_into(b)
2021-04-22 06:46:44,060 32685 INFO ? odoo.service.server: Initiating server reload

This is because Odoo is killing zombie processes and probably mistakenly crashing your Odoo completely while doing so. The parameter that is used for this purpose, can be found in Odoo documentation:

https://www.odoo.com/documentation/14.0/reference/cmdline.html

--limit-time-real <limit>
Prevents the worker from taking longer than <limit> seconds to process a request. If the limit is exceeded, the worker is killed.

Differs from --limit-time-cpu in that this is a “wall time” limit including e.g. SQL queries.

Defaults to 120.

You may start your service command with something like –limit-time-real 100000 to avoid Odoo from auto killing processes. A command could look like the following if you edit your service file located at:

/etc/systemd/system/odoo14.service

The exec would be like the following:

ExecStart=/usr/bin/scl enable rh-python36 -- /opt/odoo/odoo14-venv/bin/python3 /opt/odoo/odoo14/odoo-bin -c /etc/odoo.conf --limit-time-real=100000

Once the change is done, save the file, and reload the system daemon and restart your Odoo

systemctl daemon-reload
service odoo14 restart

How to Setup Odoo 14 in CentOS 7

Odoo is currently one of the most popular tool for business purposes. It has a community edition, that allows managing ERP at very low cost. Odoo was previously known as OpenERP. Odoo requires to be installed on a dedicated server or VPS. Odoo 14 had come out already. I will have a straight forward how to on installing the latest Odoo 14 in CentOS 7.

Log in to your system and update

First step would be to login to your system and then update the system using yum.

ssh root@server_ip

You may check the CentOS version from the redhat release file using the following:

cat /etc/redhat-release

It should show you something like the following if you

CentOS Linux release 7.8.2003 (Core)

Now, you may try updating the system with yum

yum update -y

Once done, now install the EPEL repository as we need it to satisfy a couple of dependecies:

yum install epel-release

Install Python 3.6 packages and Odoo dependencies

We need Python 3.6 at least to run Odoo 14. Odoo 13 also ran on Python 3.6. We will use ‘Software Collection (scl)’ repository to install and use Python 3.6. To find the available Python versions in SCL, you may check the following:

SCL Repository for Python

Now, to install Python 3.6 using SCL, we first need to install the SCL repository for Centos:

yum install centos-release-scl

Once the SCL is loaded, now, you may install the python 3.6 using the following command:

yum install rh-python36

Once the Python is installed, now we will install several tools and packages for Odoo dependencies with the following command:

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

Create Odoo User

We now need to create a system user and group for Odoo and define a home directory to /opt/odoo

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

You may use any username here, but remember to create the same username for the PostgreSQL as well.

Install PostgreSQL

CentOS base repository unfortunately, comes with Postgresql 9.2. But we want to use PostgreSQL 10 for our Odoo installation. You may check the available PostgreSQL for CentOS 7 using the following command:

yum list postgresql*

As by default CentOS 7 does not provide the PostgreSQL 10, we would use PostgreSQL official repository to download and install the 10 version.

First, we install the Postgres Yum Repository using the following command:

yum install https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

Now, you may install PostgreSQL 10 and related required packages using the following command:

yum install postgresql10 postgresql10-server postgresql10-contrib postgresql10-libs -y

Now, we need to initialize the postgres database and start it. You may do that using the following:

# Initialize the DB
/usr/pgsql-10/bin/postgresql-10-setup initdb

# Start the database
systemctl start postgresql-10.service

If everything goes alright, now you may check the postgresql 10 status:

[root@docker bin]# systemctl status postgresql-10.service
● postgresql-10.service - PostgreSQL 10 database server
   Loaded: loaded (/usr/lib/systemd/system/postgresql-10.service; disabled; vendor preset: disabled)
   Active: active (running) since Mon 2021-04-05 16:42:15 EDT; 5s ago
     Docs: https://www.postgresql.org/docs/10/static/
  Process: 6380 ExecStartPre=/usr/pgsql-10/bin/postgresql-10-check-db-dir ${PGDATA} (code=exited, status=0/SUCCESS)
 Main PID: 6386 (postmaster)
    Tasks: 8
   Memory: 13.5M
   CGroup: /system.slice/postgresql-10.service
           ├─6386 /usr/pgsql-10/bin/postmaster -D /var/lib/pgsql/10/data/
           ├─6388 postgres: logger process
           ├─6390 postgres: checkpointer process
           ├─6391 postgres: writer process
           ├─6392 postgres: wal writer process
           ├─6393 postgres: autovacuum launcher process
           ├─6394 postgres: stats collector process
           └─6395 postgres: bgworker: logical replication launcher

Now you may enable Postgres to start when booting up using the systemctl enable command:

systemctl enable postgresql-10.service

Now, we need to create a database user for our Odoo installation. You may do that using the following:

su - postgres -c "createuser -s odoo"

Note: If you have created a different user for Odoo installation other than ‘odoo’ than you should change the username here as well.

Install Wkhtmltopdf

Wkhtmltopdf is a open source tool to make html in pdf format so that you may print pdf reports. This tool is used by Odoo and requires to be installed as dependency. CentOS 7 repository does not provide the latest version of this tool, and Odoo requires you to use the latest version. Hence, we require to download the latest version from the Wkhtmltopdf website and install it. To do that, you may first visit the page:

https://wkhtmltopdf.org/downloads.html

The page gives you the direct rpm download link for each version of CentOS/Ubuntu/Mac etc. Download the stable version for CentOS 7. At the time of writing, the URL for CentOS 7 x86_64 bit is the following:

https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox-0.12.6-1.centos7.x86_64.rpm

You may install this using the following:

cd /opt/
wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox-0.12.6-1.centos7.x86_64.rpm
yum localinstall wkhtmltox-0.12.6-1.centos7.x86_64.rpm

Install and Configure Odoo 14

If you have come all through here, that means you are done with the all dependency installations before starting to download Odoo 14 source code. We will download Odoo 14 from it’s Github repo and use virtualenv to create an isolated python environment to install this python software.

First, login as odoo from root:

su - odoo

Clone the Odoo source code from Github repository:

git clone https://www.github.com/odoo/odoo --depth 1 --branch 14.0 /opt/odoo/odoo14

This will bring the Odoo 14 branch from the Odoo repository and put it inside the folder /opt/odoo/odoo14

Now, we need to enable software collections in order to access python binaries:

scl enable rh-python36 bash

Then we need to create a virtual environment to complete the installation:

cd /opt/odoo
python3 -m venv odoo14-venv

Now, you may activate the virtual environment you have just created:

source odoo14-venv/bin/activate

Now, we upgrade the pip and install the wheel library:

pip install --upgrade pip
pip3 install wheel

Once done, now we can using pip3 to install all the required Python modules from the requirements.txt file:

pip3 install -r odoo14/requirements.txt

Once the installation is complete, now we can deactivate the virtual environment and get back to the root user

deactivate && exit ; exit

If you think, you will create custom modules, you may now create it and give odoo the permission accordingly:

mkdir /opt/odoo/odoo14-custom-addons
chown odoo: /opt/odoo/odoo14-custom-addons

Now, we can fill up the odoo configuration file. First open the odoo.conf file:

nano /etc/odoo.conf

You may paste the following inside:

[options]
; This is the password that allows database operations:
admin_passwd = set_the_password_to_create_odoo_database
db_host = False
db_port = False
db_user = odoo
db_password = False
addons_path = /opt/odoo/odoo14/addons,/opt/odoo/odoo14-custom-addons
; You can enable log file with uncommenting the next line
; logfile = /var/log/odoo14/odoo.log

Please do not forget to change the password ‘set_the_password_to_create_odoo_database’ with a new strong password. This would be used to create Odoo databases from the login screen.

Create the systemd service file and start Odoo 14

Now, we will create a service file, to be able to start, stop and restart Odoo daemon. To do that, first create a service file using the following:

nano /etc/systemd/system/odoo14.service
[Unit]
Description=Odoo14
Requires=postgresql-10.service
After=network.target postgresql-10.service
[Service]
Type=simple
SyslogIdentifier=odoo14
PermissionsStartOnly=true
User=odoo
Group=odoo
ExecStart=/usr/bin/scl enable rh-python36 -- /opt/odoo/odoo14-venv/bin/python3 /opt/odoo/odoo14/odoo-bin -c /etc/odoo.conf
StandardOutput=journal+console
[Install]
WantedBy=multi-user.target

Now, save the file and exit.

Now, you need to reload the systemd daemon to be able to read the latest changes you have made to services. To do that, run:

systemctl daemon-reload

Finally, now we can start Odoo 14 instance using the following command:

systemctl start odoo14

If you are interested to check the status of the instance, you may do this:

systemctl status odoo14

It show green active running, if everything worked out. If you see no error, you may now enable Odoo to start during the boot:

systemctl enable odoo14

If you would like to see the logs, you may either use the journal tools like the following:

journalctl -u odoo14

or uncomment the following line to log the debugs in /etc/odoo.conf

logfile = /var/log/odoo14/odoo.log

After making any change to /etc/odoo.conf, do not forget the restart the Odoo14 instance using systemctl.

Test the Installation


Odoo is currently one of the most popular tool for business purposes. It has a community edition, that allows managing ERP at very low cost. Odoo was previously known as OpenERP. Odoo requires to be installed on a dedicated server or VPS. Odoo 13 had come out on October, 2019. Odoo 14 hasn’t been released yet for production. I will have a straight forward how to on installing the latest Odoo 13 in CentOS 7.

Log in to your system and update

First step would be to login to your system and then update the system using yum.ssh root@server_ip

You may check the CentOS version from the redhat release file using the following:cat /etc/redhat-release

It should show you something like the following if youCentOS Linux release 7.8.2003 (Core)

Now, you may try updating the system with yumyum update -y

Once done, now install the EPEL repository as we need it to satisfy a couple of dependecies:yum install epel-release

Install Python 3.6 packages and Odoo dependencies

We need Python 3.6 at least to run Odoo 13. Odoo 12 had support for Python 3.5, unfortunately, Odoo 13 doesn’t. We will use ‘Software Collection (scl)’ repository to install and use Python 3.6. To find the available Python versions in SCL, you may check the following:

SCL Repository for Python

Now, to install Python 3.6 using SCL, we first need to install the SCL repository for Centos:yum install centos-release-scl

Once the SCL is loaded, now, you may install the python 3.6 using the following command:yum install rh-python36

Once the Python is installed, now we will install several tools and packages for Odoo dependencies with the following command:yum install git gcc nano wget nodejs-less libxslt-devel bzip2-devel openldap-devel libjpeg-devel freetype-devel

Create Odoo User

We now need to create a system user and group for Odoo and define a home directory to /opt/odoouseradd -m -U -r -d /opt/odoo -s /bin/bash odoo

You may use any username here, but remember to create the same username for the PostgreSQL as well.

Install PostgreSQL

CentOS base repository unfortunately, comes with Postgresql 9.2. But we want to use PostgreSQL 9.6 for our Odoo installation. You may check the available PostgreSQL for CentOS 7 using the following command:yum list postgresql*

As by default CentOS 7 does not provide the PostgreSQL 9.6, we would use PostgreSQL official repository to download and install the 9.6 version.

First, we install the Postgres Yum Repository using the following command:yum install https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

Now, you may install PostgreSQL 9.6 and related required packages using the following command:yum install postgresql96 postgresql96-server postgresql96-contrib postgresql96-libs

Now, we need to initialize the postgres database and start it. You may do that using the following:# Initialize the DB/usr/pgsql-9.6/bin/postgresql96-setup initdb# Start the databasesystemctl start postgresql-9.6.service

Now you may enable Postgres to start when booting up using the systemctl enable command:systemctl enable postgresql-9.6.service

Now, we need to create a database user for our Odoo installation. You may do that using the following:su – postgres -c “createuser -s odoo”

Note: If you have created a different user for Odoo installation other than ‘odoo’ than you should change the username here as well.

Install Wkhtmltopdf

Wkhtmltopdf is a open source tool to make html in pdf format so that you may print pdf reports. This tool is used by Odoo and requires to be installed as dependency. CentOS 7 repository does not provide the latest version of this tool, and Odoo requires you to use the latest version. Hence, we require to download the latest version from the Wkhtmltopdf website and install it. To do that, you may first visit the page:https://wkhtmltopdf.org/downloads.html

The page gives you the direct rpm download link for each version of CentOS/Ubuntu/Mac etc. Download the stable version for CentOS 7. At the time of writing, the URL for CentOS 7 x86_64 bit is the following:https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox-0.12.6-1.centos7.x86_64.rpm

You may install this using the following:cd /opt/wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6-1/wkhtmltox-0.12.6-1.centos7.x86_64.rpmyum localinstall wkhtmltox-0.12.6-1.centos7.x86_64.rpm

Install and Configure Odoo 13

If you have come all through here, that means you are done with the all dependency installations before starting to download Odoo 13 source code. We will download Odoo 13 from it’s Github repo and use virtualenv to create an isolated python environment to install this python software.

First, login as odoo from root:su – odoo

Clone the Odoo source code from Github repository:git clone https://www.github.com/odoo/odoo –depth 1 –branch 13.0 /opt/odoo/odoo13

This will bring the Odoo 13 branch from the Odoo repository and put it inside the folder /opt/odoo/odoo13

Now, we need to enable software collections in order to access python binaries:scl enable rh-python36 bash

Then we need to create a virtual environment to complete the installation:cd /opt/odoopython3 -m venv odoo13-venv

Now, you may activate the virtual environment you have just created:source odoo13-venv/bin/activate

Now, we upgrade the pip and install the wheel library:pip install –upgrade pippip3 install wheel

Once done, now we can using pip3 to install all the required Python modules from the requirements.txt file:pip3 install -r odoo13/requirements.txt

Once the installation is complete, now we can deactivate the virtual environment and get back to the root userdeactivate && exit ; exit

If you think, you will create custom modules, you may now create it and give odoo the permission accordingly:mkdir /opt/odoo/odoo13-custom-addonschown odoo: /opt/odoo/odoo13-custom-addons

Now, we can fill up the odoo configuration file. First open the odoo.conf file:nano /etc/odoo.conf

You may paste the following inside:[options]; This is the password that allows database operations:admin_passwd = set_the_password_to_create_odoo_databasedb_host = Falsedb_port = Falsedb_user = odoodb_password = Falseaddons_path = /opt/odoo/odoo13/addons,/opt/odoo/odoo13-custom-addons; You can enable log file with uncommenting the next line; logfile = /var/log/odoo13/odoo.log

Please do not forget to change the password ‘set_the_password_to_create_odoo_database’ with a new strong password. This would be used to create Odoo databases from the login screen.

Create the systemd service file and start Odoo 13

Now, we will create a service file, to be able to start, stop and restart Odoo daemon. To do that, first create a service file using the following:nano /etc/systemd/system/odoo13.service

and paste the following:[Unit]Description=Odoo13Requires=postgresql-9.6.serviceAfter=network.target postgresql-9.6.service[Service]Type=simpleSyslogIdentifier=odoo13PermissionsStartOnly=trueUser=odooGroup=odooExecStart=/usr/bin/scl enable rh-python35 — /opt/odoo/odoo13-venv/bin/python3 /opt/odoo/odoo13/odoo-bin -c /etc/odoo.confStandardOutput=journal+console[Install]WantedBy=multi-user.target

Now, save the file and exit.

Now, you need to reload the systemd daemon to be able to read the latest changes you have made to services. To do that, run:systemctl daemon-reload

Finally, now we can start Odoo 13 instance using the following command:systemctl start odoo13

If you are interested to check the status of the instance, you may do this:systemctl status odoo13[root@hr ~]# systemctl status odoo13● odoo13.service – Odoo13 Loaded: loaded (/etc/systemd/system/odoo13.service; enabled; vendor preset: disabled) Active: active (running) since Sun 2020-09-13 08:26:46 EDT; 23h ago Main PID: 24502 (scl) CGroup: /system.slice/odoo13.service ├─24502 /usr/bin/scl enable rh-python36 — /opt/odoo/odoo13-venv/bin/python3 /opt/odoo/odoo13/odoo-bin -c /etc/odoo.conf ├─24503 /bin/bash /var/tmp/sclSWH04z └─24507 /opt/odoo/odoo13-venv/bin/python3 /opt/odoo/odoo13/odoo-bin -c /etc/odoo.conf

It show green active running, if everything worked out. If you see no error, you may now enable Odoo to start during the boot:systemctl enable odoo13

If you would like to see the logs, you may either use the journal tools like the following:journalctl -u odoo13

or uncomment the following line to log the debugs in /etc/odoo.conflogfile = /var/log/odoo13/odoo.log

After making any change to /etc/odoo.conf, do not forget the restart the Odoo13 instance using systemctl.

Test the Installation

You may now test the installation using http://your_server_ip:8069. If everything worked, it should come up. If it doesn’t, you may try stopping your ‘firewalld’ to see if firewall is blocking the port or not:

systemctl stop firewalld

At Mellowhost, we provide Odoo installation and configuration assistance for absolute free of charge. If you are willing to try out any of our VPS for Odoo, you may do so and talk with us through the Live chat or the ticket for Odoo assistance.

Furthermore, Good luck.