Applicable to:
- Plesk for Linux
Symptoms
-
Plesk Migrator shows the following pre-migation warning:
PLESK_INFO: The following Apache modules are not installed on the destination server: unique_id.
Please install and enable these modules to prevent possible problems. -
ModSecurity is installed on the destination server: Tools & Settings > Web Application Firewall (ModSecurity).
-
The
unique_id
module is not listed at Tools & Settings > Apache Web Server and in the output of the command which shows Apache modules:# plesk bin optimization_settings -s | grep unique_id
# -
When listing all enabled Apache modules using the httpd utility,
unique_id
is listed as enabled:# httpd -M | grep unique_id
unique_id_module (shared)
Cause
The Apache module unique_id
is always enabled by default in Plesk as it is required by ModSecurity to function properly. To eliminate the possibility to disable this module, it was hidden in Plesk.
Since it becomes impossible to check the module status using Plesk utilities, this behavior is considered as a bug with ID PPPM-11037, which is planned to be fixed in product future updates.
Resolution
No actions are required - the Apache unique_id
module is enabled.
The warning message in Plesk Migrator can be safely ignored.
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