Installing Plesk Components with Local Settings
Some components require individual settings for each node, and therefore you need to install them on each node manually. Examples are Fail2Ban and ModSecurity.
To install a component:
Go to the management node > Tools & Settings > Updates and Upgrades and install the component.
Go to Nodes.
All service nodes will be switched to the Unsupportedstatus.
Go to each service node (Manage Node > Tools & Settings > Updates and Upgrades) and install the component.
Go back to the management node (Go to > Nodes).
Click Re-Check in the list of nodes to see the current status of the node. The status should become Active.