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Article ID: 120893, created on Apr 4, 2014, last review on May 10, 2014

  • Applies to:
  • Plesk Automation 11.5


  1. Error while adding new Service Node in PPA:

    Internal error: Unknown exception while parsing /usr/local/pem/etc/service_config.xml
  2. Information about Service ID is missed in /usr/local/pem/etc/service_config.xml:

    <?xml version="1.0" encoding="UTF-8" standalone="no" ?>


  1. When Service Node is being added pleskd connects from Service Node to Management Node using port 8356. If connection to this port is not permitted by firewall on Management Node, such situation may take a place.

  2. service_config.xml was corrupted.


  1. Make sure that requirements for open ports are met for Management Node:

Deployment Guide

    Open TCP ports (PPA-specific)

    8880: HTTP access to PPA
    8443: HTTPS access to PPA
    80, 8352, 8440: Connections between the Administration Panel and service nodes
    12443, 10001: The Hosting Panel web server
    8354, 8356, 8360, 8362, 8364, 8412, 8490, 8532: Various purposes

Ports should be opened that Service Node can connect ot Management Node.

As workaround, you may apply the following instruction:

  1. Modify the required file and add records which are used for check availability services on a required service node:

root@apache5 ~]# cat /usr/local/pem/etc/service_config.xml

Where id = 5 it is ID of installed mail service for this service node.

You can find it here:

Top -> Infrastructure -> Service nodes -> Required service node -> Applications - > ID.

Please insert ID number of mail service from your PPA installation.

  1. Re-run the failed task.

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