Article ID: 1571, created on Oct 6, 2008, last review on May 11, 2014

  • Applies to:
  • Plesk for Linux/Unix


If an application works though the 9080 port, but fails to run on 80, it is possible that the Apache<->Tomcat (mod_jk) connector is not configured properly.

Make sure that the file $HTTPD_CONF_D/ that is included in $HTTPD_INCLUDE_D/zz010_psa_httpd.conf contains the following options:


If not, correct it and restart Apache.

If it doesn't help, check that you get an answer when running the following:

# telnet localhost 9008
Connected to localhost.localdomain (
Escape character is '^]'.

If the connection to 9008 fails, make sure that Tomcat itself is configured to listen on 9008. There should be a line that looks like the following:

<Connector port="9008" enableLookups="true" debug="0" protocol="AJP/1.3"/>

If you don't see it, run this command to get the configuration needed by the Plesk connectors:

/usr/local/psa/admin/sbin/tomcatmng --install-psa

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