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Use the extended inet daemon (XINETD)

 

The following instructions describe how the extended inet daemon is implemented on Red Hat Linux. If you are using a different Linux distribution, you might have to adapt these instructions.

To establish a TCP connection, follow these steps.

1. Edit the file /etc/services. If you do not have the following line in the file, add it as shown:

   MQSeries       1414/tcp      # MQSeries channel listener

   To edit this file, be logged in as a superuser or root.

2. Create a file called MQSeries in the XINETD configuration directory, /etc/xinetd.d. Add the following stanza to the file:

   # WebSphere MQ service for XINETD
   service MQSeries
   {
     disable         = no
     flags           = REUSE
     socket_type     = stream
     wait            = no
     user            = mqm
     server          = /opt/mqm/bin/amqcrsta
     server_args     = -m queue.manager.name
     log_on_failure += USERID
   }

3. Restart the extended inet daemon by issuing the following command:

   /etc/rc.d/init.d/xinetd restart

If you have more than one queue manager on your system, and therefore require more than one service, add a line to /etc/services for each additional queue manager. We can create a file in the /etc/xinetd.d directory for each service, or we can add additional stanzas to the MQSeries file you created previously.

The xinetd process on Linux can limit the rate of inbound connections on a TCP port. The default is 50 connections in a 10 second interval. If you need a higher rate, specify a new limit on the rate of inbound connections by specifying the 'cps' attribute in the xinetd configuration file. For example, for a limit of 500 connections in a 60 second interval use:

cps = 500 60

 

Parent topic:

Establishing a TCP connection

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