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Description
When running magento2 on several servers, some of the files must be shared. Unfortunately, the var directory may contain various elements that must be shared between store instances. Therefore, it is impossible to set the
var/.maintenance.flagfile to not be shared by an instance. Currently, when we have several servers with a shared var directory, when we turn on maintenance mode on one (e.g., when doing a Blue/Green deployment) the other stores also turned on maintenance mode.Expected behavior
The
.maintenance.flagfile marking the maintenance mode is located in a separate folder, such asvar/flags/.maintenance.flagor allowing this path to be configured via the CLI.Benefits
Making it easier when running multiple magento2 nodes. This will make it easier to separate the folder to be stored locally only.
Additional information
The folder for this file must be changed: https://github.com/magento/magento2/blob/2.4-develop/lib/internal/Magento/Framework/App/MaintenanceMode.php#L33
Release note
Separate the maintenance flag
.maintenance.flaginto a separatevar/flagsfolder. This way, only this folder from the var folder can be set as local in case of architecture with several magento2 servers.