I try to add Apache based service node under Top > Infrastructure > Service Nodes in Parallels Plesk Automation, but task fails with error:
ERROR: There is no product with ID plesk
Plesk Panel was installed to the service node before node registration. It is necessary to use clean CentOS operation system to register Apache/Postfix service nodes.
Cancel current tasks in System > Task Manager.
Remove service node under Infrastructure > Service Nodes
Reinstall OS on the service node to get rid of Plesk packages.
Add node again.
Please refer to the documentation to get additional information and service node requirements.