Upgrade from Centreon 20.04 · Centreon documentation

This chapter describes how to upgrade your Centreon platform from version 20.04 to version 21.04.

If you want to migrate your Centreon server to CentOS / Oracle Linux / RHEL 8 you need to follow the migration procedure

To perform this procedure, your MariaDB version must be >= 10.3.22. If not, please follow before the MariaDB update chapter

Perform a backup

Be sure that you have fully backed up your environment for the following servers:

Central server
Database server

Upgrade the Centreon Central server

Since 21.04, Centreon uses MariaDB 10.5.

This upgrade process will only upgrade Centreon components first.

MariaDB will be upgraded afterwards.

Update the Centreon repository

Run the following commands:

yum install -y http://yum.centreon.com/standard/21.04/el7/stable/noarch/RPMS/centreon-release-21.04-4.el7.centos.noarch.rpm

Upgrade the Centreon solution

Stop the Centreon Broker process:

systemctl stop cbd

Delete existing retention files:

rm /var/lib/centreon-broker/* -f

Clean yum cache:

yum clean all --enablerepo=*

Then upgrade all the components with the following command:

yum update centreon\*

Accept new GPG keys from the repositories as needed.

The PHP timezone should be set. Run the command:

echo "date.timezone = Europe/Paris" >> /etc/opt/rh/rh-php73/php.d/50-centreon.ini

Replace Europe/Paris by your time zone. You can find the list of supported time zones here.

Execute the following commands:

systemctl stop rh-php72-php-fpm
systemctl disable rh-php72-php-fpm
systemctl enable rh-php73-php-fpm
systemctl start rh-php73-php-fpm

Finalizing the upgrade

Before starting the web upgrade process, reload the Apache server with the following command:

systemctl reload httpd24-httpd

Then log on to the Centreon web interface to continue the upgrade process:

Click on Next:

The release notes describe the main changes. Click on Next:

This process performs the various upgrades. Click on Next:

Your Centreon server is now up to date. Click on Finish to access the login page:

If the Centreon BAM module is installed, refer to the upgrade procedure.

Post-upgrade actions

Deploy the configuration.

Restart Centreon processes:

systemctl restart cbd centengine centreontrapd gorgoned

Upgrade extensions. From Administration > Extensions > Manager, upgrade all extensions, starting with the following:

License Manager,
Plugin Packs Manager,
Auto Discovery.

Then you can upgrade all other commercial extensions.

Upgrade the MariaDB server

The MariaDB components can now be upgraded.

Refer to the official MariaDB documentation to know more about this process:

https://mariadb.com/kb/en/upgrading-between-major-mariadb-versions/

Update the Centreon repository

This step is required ONLY when your environment features an architecture with a dedicated remote DBMS. If your environment features Centreon Central and MariaDB together on the same server, you SHOULD simply skip this step.

Run the following command on the dedicated DBMS server:

yum install -y http://yum.centreon.com/standard/21.04/el7/stable/noarch/RPMS/centreon-release-21.04-4.el7.centos.noarch.rpm

Upgrading MariaDB

You have to uninstall then reinstall MariaDB to upgrade between major versions (i.e. to switch from version 10.3 to version 10.5).

Stop the mariadb service:
```
systemctl stop mariadb
```

Uninstall the current version:

rpm --erase --nodeps --verbose MariaDB-server MariaDB-client MariaDB-shared MariaDB-compat MariaDB-common

Install version 10.5:

yum install MariaDB-server-10.5\* MariaDB-client-10.5\* MariaDB-shared-10.5\* MariaDB-compat-10.5\* MariaDB-common-10.5\*

Start the mariadb service:
```
systemctl start mariadb
```
Launch the MariaDB upgrade process:
```
mysql_upgrade
```
If your database is password-protected, enter:
```
mysql_upgrade -u <database_admin_user> -p
```
Example: if your database_admin_user is root, enter:
```
mysql_upgrade -u root -p
```
Refer to the official documentation for more information or if errors occur during this last step.

Enable MariaDB on startup

Execute the following command:

systemctl enable mariadb

Upgrade the Remote Servers

This procedure is the same than to upgrade a Centreon Central server.

Upgrade the Pollers

Update the Centreon repository

Run the following command:

yum install -y http://yum.centreon.com/standard/21.04/el7/stable/noarch/RPMS/centreon-release-21.04-4.el7.centos.noarch.rpm

Upgrade the Centreon solution

Clean yum cache:

yum clean all --enablerepo=*

Upgrade all the components with the following command:

yum update centreon\*

Accept new GPG keys from the repositories as needed.

Secure your platform

Don't forget to secure your Centreon platform following our recommendations