- Plesk Onyx for Linux
Service Node periodically turns into "Unavailable" state and then reverts back to the Activated state upon the next synchronization with Management node.
Unable to add new Service Node.
On the Management Node in
/var/log/plesk/panel.logthe following errors may be found:
PLESK_INFO: WARN [extension/plesk-multi-server] Service node API-RPC is not available: IP address=192.0.2.2. Details: Error in cURL request: Connection timed out after 10001 milliseconds
The connection from Management Node to Service node on TCP port 8443 is blocked by firewall.
Allow port 8443 for incoming connection from Management Node IP on Service Node and/or intermediate firewalls.