Migration to Plesk can not be started: Failed to connect to target Plesk server by Plesk API Plesk error 1006 Access to API is disabled

Symptoms

• The following error is shown when starting the migration in Plesk, where 203.0.113.2 is the target server IP Address:

  PLESK_ERROR: Failed to connect to target Plesk server by Plesk API: Plesk error [1006]: Access to API is disabled for 203.0.113.2

• It is possible to connect via telnet to the target server on 8443 port locally and remotely, for example:

  # telnet 203.0.113.2 8443
  Trying 203.0.113.2...
  Connected to 203.0.113.2.
  Escape character is '^]'.

• The following records can be found in the migration debug log file:

  • Logfile location on Windows: %plesk_dir%var\modules\panel-migrator\sessions/<date_of_session>/debug.log

  • Logfile location on Linux: /usr/local/psa/var/modules/panel-migrator/sessions/<date_of_session>/debug.log

• CONFIG_TEXT: D|MT|core.utils.common.http_xml_client|||API request to https://203.0.113.2:8443/enterprise/control/agent.php
  D|MT|core.utils.common.http_xml_client|||Request XML:
  D|MT|core.utils.common.http_xml_client|||<?xml version="1.0" encoding="utf-8"?>
  D|MT|core.utils.common.http_xml_client|||<packet version="1.5.2.1">
  D|MT|core.utils.common.http_xml_client||| <server>
  D|MT|core.utils.common.http_xml_client||| <get>
  D|MT|core.utils.common.http_xml_client||| <stat/>
  D|MT|core.utils.common.http_xml_client||| </get>
  D|MT|core.utils.common.http_xml_client||| </server>
  D|MT|core.utils.common.http_xml_client|||</packet>
  D|MT|core.utils.common.http_xml_client|||
  D|MT|core.utils.common.http_xml_client|||Response:
  D|MT|core.utils.common.http_xml_client|||<packet version="1.5.2.1">
  D|MT|core.utils.common.http_xml_client||| <system>
  D|MT|core.utils.common.http_xml_client||| <status>error</status>
  D|MT|core.utils.common.http_xml_client||| <errcode>1006</errcode>
  D|MT|core.utils.common.http_xml_client||| <errtext>Access to API is disabled for 203.0.113.2</errtext>
  D|MT|core.utils.common.http_xml_client||| </system> </packet>

• Plesk IP access policy is configured on the target server: in the menu Tools & Settings > IP Access Restriction Management > Settings, the option Access to Plesk with administrator's privileges is set to Denied from the networks that are not listed.

Cause

Plesk API is unable to access the target server locally because the server's own IP address is not present in the list of allowed IP addresses.

Resolution

1. Log in to Plesk on the target server.

2. Go to Tools & Settings > IP Access Restriction Management.

3. Allow the target server IP address: click Add Network and enter the IP address.