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MQSeries.net Forum Index » IBM MQ Installation/Configuration Support » Multiple Qmanagers on single SUN box

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Ilya
PostPosted: Thu Apr 18, 2002 4:15 am    Post subject: Reply with quote

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Joined: 17 Apr 2002
Posts: 5

I was wondering what additional configuration one has to make to have multiple qmanagers on single SUN machine. I am concerned about the entree in the /etc/inetd.conf /opt/mqm/bin/amqcrsta amqcrsta -m <1stqmanager>how do i add the second one? TIA Ilya
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mrlinux
PostPosted: Thu Apr 18, 2002 4:43 am    Post subject: Reply with quote

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Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA

The line in /etc/inetd.conf contains the QMGR_NAME as a parameter so all you
do is copy that line and change the queue manager name in both places.

also in the /etc/services file you need to pick a new port number.

QMGR_NAME 1415/tcp

Also restart inetd after these changes

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[ This Message was edited by: mrlinux on 2002-04-18 05:44 ]
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Ilya
PostPosted: Thu Apr 18, 2002 5:49 am    Post subject: Reply with quote

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Joined: 17 Apr 2002
Posts: 5

Tnaks for a quick responce. One more question: What if I want to bind each Qmanager to a specific Virtual IP address. For example: I do not want to use different ports, rather I would listen on the same port (1414) but ont he differnt ip on the same machine. How can this be accomplished? What can I use instead of /etc/services entree? Or how can this entree be modified? TIA Ilya
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rwa
PostPosted: Fri Apr 19, 2002 4:42 am    Post subject: Reply with quote

Voyager

Joined: 22 Jan 2002
Posts: 76
Location: Duesseldorf/Germany

A solution is to configure the listener to listen only on a single ip-address. This can be done by editing the section TCP in file qm.ini
[TCP]
PORT=n
IPADDR=x.x.x.x or hostname
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mrlinux
PostPosted: Fri Apr 19, 2002 4:53 am    Post subject: Reply with quote

Grand Master

Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA

If the /etc/inetd.conf trick I suggested works on Sun you will end up with
2 lines

64.101.101.11:QMGR_A stream tcp nowait mqm /opt/mqm/bin/amqcrsta -m QMGR_A
64.101.222.22:QMGR_B stream tcp nowait mqm /opt/mqm/bin/amqcrsta -m QMGR_B
also /etc/services

QMGR_A 1414/tcp
QMGR_B 1414/tcp

Iam not sure this will work on Sun.

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kolban
PostPosted: Fri Apr 19, 2002 5:47 am    Post subject: Reply with quote

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Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA

Sorry Jeff, this will not work. You can only have one application (Unix process) listening on one TCP/IP socket port. If you try and start a second app against the same port it will get a socket bind error and not work.

[ This Message was edited by: kolban on 2002-04-19 06:47 ]
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mrlinux
PostPosted: Fri Apr 19, 2002 6:03 am    Post subject: Reply with quote

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Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA

Well inetd is the one binding to the ports, so it's not 2 applications trying to bind to the port also there are 2 seperate IP Address. Linux
is able to specify listening to one IP only, so it might be possible. I tend to agree it probably wont work, but it is an intresting expierment


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Jeff

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[ This Message was edited by: mrlinux on 2002-04-19 07:03 ]

[ This Message was edited by: mrlinux on 2002-04-19 07:09 ]
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Ilya
PostPosted: Fri Apr 19, 2002 9:38 am    Post subject: Reply with quote

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Joined: 17 Apr 2002
Posts: 5

thanks to all who replied what is the exect syntax for the this entreees in the qm.ini file. I get some errors. please help: A solution is to configure the listener to listen only on a single ip-address. This can be done by editing the section TCP in file
qm.ini
[TCP]
PORT=n
IPADDR=x.x.x.x or hostname
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mrlinux
PostPosted: Fri Apr 19, 2002 10:00 am    Post subject: Reply with quote

Grand Master

Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA

Just an FYI on LINUX!! This works

I setup 2 virtual IPs on the loop back device

and added the following to my inetd.conf

128.0.0.1:telnet1 stream tcp nowait root /usr/sbin/tcpd in.telnetd
129.0.0.1:telnet2 stream tcp nowait root /usr/sbin/tcpd in.ftpd

added the following to my services file
telnet1 1414/tcp
telnet2 1414/tcp

restarted inetd
when I issue a telnet to 128.0.0.1 1414 I get telnet session
when I issue a telnet to 129.0.0.1 1414 I get a ftp session

Now if the inetd works the same on Sun then this type of setup will allow you
to listen on 1414 for more than 1 queue manager if you have the seperate virtual IP Address

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rwa
PostPosted: Sun Apr 21, 2002 11:14 pm    Post subject: Reply with quote

Voyager

Joined: 22 Jan 2002
Posts: 76
Location: Duesseldorf/Germany

I was just able to test the configuration with IPADDR. This feature is documented in the book IBM MQ Series Intercommunication (Appendix C). If I set this feature the listener did not start. The errormessage is "AMQ9224: Unexpected token detected.".
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