nsca-2.9 compatability

[Eric Stanley]

I also ran into this issue this week, but before I had caught up on the 
list traffic. I discussed it with Ethan and his concern is that there 
are a lot of agents (especially for Windows) that are not being 
maintained and will break with the larger buffer size expected by the 
newer daemon.

We think the best way is to roll back the buffer size to its old value 
for compatibility with older clients. NRDP is a more flexible solution 
going forward anyway. We realize that rolling back the buffer size will 
mean that some of the output will be truncated.

Anyone have violent objections or better ideas?

Eric

On 1/11/2012 11:57 PM, Daniel Wittenberg wrote:
>
> Yeah we went through the same thing and had to bite the bullet and 
> increased the nsca and nrpe buffer sizes all at once across the 
> board.  It was painful, but once done it was done.
>
>
> Dan
>
> *From:*Andrew Widdersheim [mailto:awiddersheim at hotmail.com]
> *Sent:* Wednesday, January 11, 2012 7:33 PM
> *To:* mike-nagios at 5dninja.net; nagios-devel at lists.sourceforge.net
> *Subject:* Re: [Nagios-devel] nsca-2.9 compatability
>
> I haven't looked at NRDP much more than you have but it sounds like it 
> would be a fix to many of NSCA's short comings. The problem for us is 
> the chore of switching everything over in one shot.
>
> We don't do that much passively so the check results queue feature is 
> actually an extra bonus for us in the upgrade. We are actually more 
> interested in the longer output. If there is an easy way to make this 
> more compatible for with older versions than great. If not we can plan 
> a large upgrade of everything or a cut over to NRDP. We just have a 
> problem now and were looking for a quick solution without breaking 
> already existing stuff.
>
> -Andrew W.
>
> ------------------------------------------------------------------------
>
> Date: Wed, 11 Jan 2012 15:38:44 -0800
> From: mike-nagios at 5dninja.net <mailto:mike-nagios at 5dninja.net>
> To: nagios-devel at lists.sourceforge.net 
> <mailto:nagios-devel at lists.sourceforge.net>
> CC: awiddersheim at hotmail.com <mailto:awiddersheim at hotmail.com>
> Subject: Re: [Nagios-devel] nsca-2.9 compatability
>
> On 1/11/12 11:16 AM, Andrew Widdersheim wrote:
>
> I wanted to use Mike Lindsey's new features in nsca-2.9 but found that 
> clients on 2.7.2 were not able to communicate after updating the 
> server. I found this on the Nagios bug tracker:
>
> http://tracker.nagios.org/view.php?id=78
>
> >From what I'm reading it's not possible to have a client and server 
> compiled with different MAX_PLUGINOUTPUT_LENGTH. Has this been fixed 
> at all and I'm just not finding it?
>
> As far as I'm aware, there's no easy fix for this.  If you cannot 
> upgrade your clients, then you can recompile the nsca binary with 
> MAX_PLUGINOUTPUT_LENGTH set back to 512.  That should let you use the 
> checkresult directory feature, without breaking compatibility with 
> older clients.
>
> I'll take another look at the source and see if any options jump out 
> at me, but I don't know how much effort I should put into it - I think 
> Andreas is actively working on a Better Solution.
>
> -- 
> Mike Lindsey
>
>
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-- 
Eric Stanley
___
Developer
Nagios Enterprises, LLC
Email:  estanley at nagios.com
Web:    www.nagios.com

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