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NGNIX as a proxy


Norman Dignard (32645794) | asked Feb 21 '17, 2:26 p.m.

We're trying to setup JAZZ 602 in a distributed deployment and have been successful in exercising DNG, CCM and RQM functions however DCC is hung on loading jobs. We're raised a PMR only to be told that NGNIX is not supported and to use IHS.

We know that ngnix is not officially supported by IBM but that does not mean it can't be used. I find it hard to believe that JAZZ usage would be limited to using IHS. 

Has anyone managed to get JAZZ to work using ngnix?  The ngnix doc I found on jazz.net is not very helpful in resolving our issue.

Regards


Comments
Alan Sampson commented Feb 21 '17, 6:29 p.m.
JAZZ DEVELOPER

The risk you face in using NGNIX instead of a supported product is that should you run into a problem in your deployment, Support will require that you reproduce the issue with supported software before requesting assistance from IBM as there's no way for IBM to confirm that the issue is not caused by the unsupported software.

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Paul Ellis (1.2k613) | answered Feb 22 '17, 6:29 a.m.
JAZZ DEVELOPER

Hi Norm,

The wiki article on Nginx  shows how one of our consultants got this working for the main applications.  There was an initial issue with DNG, which they subsequently addressed.  We publish this information, as we thought it might prove useful.

If you see our supported software for 6.0.2 then you could use IHS (implicit in the Websphere license you are entitled to), or Apache can be used for reverse proxies  You could setup mod_proxy on Apache and see if this is a proxy issue or something more generic if you do not wish to use IHS and plugins.

Ultimately though, you can use whatever proxy you wish.  We have many using F5 etc.
However, Alan is correct.  We can only accept defects and requests for assistance via PMRs on those platforms and software we have certified against.  All other support is then via this forum, or via IBM Services, or the proxy supplier.  Indeed, if you were using IHS here we could divert the PMR to them if we cannot see why the proxy isn't working as expected.


Comments
Ralph Schoon commented Feb 23 '17, 2:52 a.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER

 Paul, please make answers answers. Otherwise we only fill up the forum with questions that appear to be unanswered while they are actually answered.


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Norman Dignard (32645794) | answered Mar 13 '17, 11:55 a.m.

The server OS was the culprit and IBM has a technote on this.

In http://www-01.ibm.com/support/docview.wss?uid=swg21469413

On Red Hat Enterprise Linux 6, why are my settings for nproc (ulimit -u) not being honored.

Red Hat Enterprise Linux 6 has introduced a configuration file, addressed in a bug report, ( /etc/security/limits.d/90-nproc.conf ) that overrides the nproc setting in the limits.conf. This file contains a line for nproc configured with a soft limit of 1024.

*          soft    nproc     1024

The rationale for this was to prevent fork bombs from occurring, To keep using the limits.conf for your nproc ulimit settings, you would need to comment this line out.

 

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