Migration procedures apply when you wish to install your Centreon on a different OS (typically, to change from an unsupported OS to a supported OS). You need to install a new OS and a new Centreon platform, then migrate your old data to the new platform.
If you just want to switch to a newer version of Centreon and your current platform is already installed on a supported OS, use the upgrade procedures instead.
The following table describes various cases:
|OS||Version of Centreon||Procedure to be applied|
|CentOS 7||3.4 to 21.10||upgrade|
|CentOS 8||20.10 to 21.10||migration|
|RHEL 8||20.10 to 21.10||upgrade|
|OL 8||20.10 to 21.10||upgrade|