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IBM Cognos 8 Platform => COGNOS 8 => COGNOS 8 Administration => Topic started by: monica on 17 Aug 2012 09:47:19 AM

Title: How to install multiple dispatcher
Post by: monica on 17 Aug 2012 09:47:19 AM
Hi Friends,


Please help me on this,
I have installed cognos in a desktop and i want to try installing multiple dispatchers. I am new to installation. How to install multiple dispatcher on a single machine ?

Thanks,
Monica
Title: How to install multiple dispatcher
Post by: MFGF on 17 Aug 2012 05:27:48 PM
Quote from: monica on 17 Aug 2012 09:47:19 AM
Hi Friends,


Please help me on this,
I have installed cognos in a desktop and i want to try installing multiple dispatchers. I am new to installation. How to install multiple dispatcher on a single machine ?

Thanks,
Monica

Do you mean you have installed the Cognos 8 server software onto a desktop machine? Basically, you get one dispatcher per installed instance of Cognos 8. Assuming you installed all components into one instance, they all share the same dispatcher. To get multiple dispatchers, you need to install either onto a second machine, or into a separate instance on the same machine. Be aware that there can only be one active content manager, so if you do a full second install, the content manager for this can be configured as a standby. The application server components will load balance and fail over between themselves automatically. Ideally you will have a single gateway, configured to talk to one of your dispatchers, and with the second as a failover.

Why do you want multiple dispatchers, by the way? Is it just a learning exercise?

MF.


Sent from my iPad using Tapatalk HD
Title: Re: How to install multiple dispatcher
Post by: Grim on 22 Aug 2012 10:14:35 AM
Re-run the install.
Install to a separate directory (NOT your original Cognos install dir).
When selecting components select the "Application Tier" ONLY.
Finish the install.
Run cognos config and make sure you change all the ports so they do not interfere with the first/original install.
Title: Re: How to install multiple dispatcher
Post by: monica on 23 Aug 2012 07:13:27 AM
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Title: Re: How to install multiple dispatcher
Post by: monica on 23 Aug 2012 07:19:03 AM
@MFGF Yes i am  working it as an excercise.
Thanks MFGF and  Grim for your reply .


In the same way we can install multiple gateways (web tier components ) on a desktop ?

One question more... How does the first installation come to know that the other dispatcher exists ?
Title: Re: How to install multiple dispatcher
Post by: smiley on 23 Aug 2012 09:32:33 AM
Quote from: monica on 23 Aug 2012 07:19:03 AM
In the same way we can install multiple gateways (web tier components ) on a desktop ?
yes.
One question more... How does the first installation come to know that the other dispatcher exists ?
On startup it registers in the content store, and get's the info on the other dispatchers.
Title: Re: How to install multiple dispatcher
Post by: Marva55 on 31 Oct 2013 09:17:04 AM
Quote from: Grim on 22 Aug 2012 10:14:35 AM
Re-run the install.
Install to a separate directory (NOT your original Cognos install dir).
When selecting components select the "Application Tier" ONLY.
Finish the install.
Run cognos config and make sure you change all the ports so they do not interfere with the first/original install.

Does Cognos Configuration handle the fact that two Windows services can't have the same name?

Do you manually need to register the Cognos Windows service on the second instance of Cognos?
Title: Re: How to install multiple dispatcher
Post by: MFGF on 31 Oct 2013 09:39:20 AM
Quote from: Marva55 on 31 Oct 2013 09:17:04 AM
Does Cognos Configuration handle the fact that two Windows services can't have the same name?
Yes it does.
Quote from: Marva55 on 31 Oct 2013 09:17:04 AM
Do you manually need to register the Cognos Windows service on the second instance of Cognos?
Nope - it does this for you.
Title: Re: How to install multiple dispatcher
Post by: Marva55 on 04 Nov 2013 04:17:56 AM
This was a easy one! ;D

I discovered that the possible issue with duplicate Windows Service names was no issue. The second dispatcher Windows Service name could easily be renamed in Cognos Configuration before booting up the second dispatcher for the first time.