Re: [Nagios-db-devel] retention.dat

[Ben <be...@si...>]

Before I can speak to the solutions, I don't understand the problem.

1. Why would retention.dat be missing?
2. Hostgroup membership is determined by walking the hostgroup config 
object in memory.
3. It's true that if nagios is told to re-read its config, it might not 
re-initialize the NEB, which might be a problem for us. On the other 
hand, it might not, because we re-read the config stuff after 
initialization but before steady state.
4. Every time I restart Nagios, I get an imperial boatload of updates. 
Then again, I probably have a retention.dat file.

On Jan 3, 2005, at 9:40 PM, Matthew Kent wrote:

> I've been working on the last bits of my MySQL neb module have just
> noticed a rather basic issue for both modules that hasn't cropped up
> till now.
>
> It seems that without the retention.dat file nagios doesn't feed the 
> big
> lump of host/service data into the module on startup. Now logically 
> this
> makes sense but causes a bit of a problem when there's hostgroup
> memberships to insert into the db that depend on those entries getting
> loaded at startup. This also messes up adding a host to nagios and
> restarting it as again the host won't be in the db until its first
> checks are finished breaking the hostgroup data.
>
> As for possible solutions, looping through the lists of hosts and
> services in processStart and registering them in the db is a
> possibility. But if the retention file already exists your doing twice
> the work since nagios will still send all the broker calls, and I'm not
> sure of a way to detect this in processStatus to skip those entries.
>
> Another (and I think better) option would be to submit a patch request
> to Ethan to have Nagios stop sending event broker updates when reading
> retention.dat and simply have it loop through both host and service
> lists after reading it (whether it exists or not) and send all the data
> at every startup.
>
> Thoughts? Am I missing something obvious...
> -- 
> Matthew Kent <mk...@ma...>
> http://magoazul.com
>
>
>
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