question about running Nagios on Solaris LDom and Zone servers
Litwin, Matthew
mlitwin at stubhub.com
Wed Jan 13 17:20:08 CET 2010
I just pacakged up NRPE and it conveniently installs on all the zones.
Today I get it going on SMF.
Sent from my iPhone
On Jan 13, 2010, at 2:01 AM, "Scott, Ewan"
<EWScott at scotborders.gov.uk> wrote:
> Matthew
> Thanks for this. I am going to have to give consideration to exactly
> the same things you already have, so what you've written will be
> helpful.
> Regards
> Ewan
>
> -----Original Message-----
> From: Litwin, Matthew [mailto:mlitwin at stubhub.com]
> Sent: 12 January 2010 19:01
> To: Scott, Ewan
> Cc: Morris, Patrick; Nagios Mailinglist
> Subject: Re: [Nagios-users] question about running Nagios on Solaris
> LDom and Zone servers
>
> I am looking at the same situation myself and have decided that I am
> going to have to run NRPE on each zone lest I rewrite all my
> plugins. Now I am deciding which checks should run on the LDom and
> which on the zones. It seems that disk checks are are good first
> choice to run on the LDom only, especially since there are already
> plugins on Nagios Exchange to do this (check_zpools.sh and such). I
> am trying to figure out what would be the best way to just use the
> LDom for CPU and load checking, but I don't see any plugins that
> would be able to give zone specific results.
>
> Aside from performance concerns, the main concern I am having is
> about how Nagios runs the checks and therefore how it organizes it.
> The whole LDom model breaks the Nagios host model of organazing
> things by host and in order to preserve this you pretty much have to
> make a new set of entries in command.cfg that can map your host
> names to zone names so that while you are running the commands
> against the LDom Nagios organizes the resultant data by the proper
> virtual host name and not just dump everything under the LDom host.
> This will be some work and will add yet another layer of complexity
> to an already complex system.
>
> I am not sure if any of this will be helpful, but it sounds like are
> trying to do the same thing.
>
> Here are some other resources that I stumbled upon so far which
> should be helpful as well:
> https://s23.org/wiki/Nagios/checks/solaris_zones
> http://stig.prod.dbs.melbourneit.com/
>
> On Jan 12, 2010, at 2:41 AM, Scott, Ewan wrote:
>
>> Thanks for this. I have not decided on exactly what I'll monitor as
>> I'm still installing the clients and making sure the the basic
>> infrastucture works. However in outline:
>>
>> 1. I intend to use nrpe for the checks.
>> 2. I would envisage 5-6 basic checks on the host primary LDom
>> servers (4) and primary Zone servers (2).
>> 3. I would expect to run up to 10 nrpe checks on each of the guest
>> LDoms and Zones (25 systems).
>>
>> I would see that as a small system with lightweight checking but
>> would appreciate comments if anyone thinks otherwise.
>>
>> Further down the line I'd like to add in 80+ Windows VM systems at
>> which point it would become a very differnet beast. Currently I'm
>> running the Nagios server on Ubuntu on an old Dell PowerEdge 1850
>> but had thought of moving it over to a VMware virtual box as it
>> grows. From what you are saying you think I'd run into problems
>> with Nagios on a VM like this and I'd be better keeping it on an -
>> adequately powered - standalone physical box?
>>
>> Regards
>> Ewan
>>
>> Version info:
>> Nagios core: 3.2
>> Nagios plugins: 1.4.14
>> Nagios nrpe: 2.12
>>
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Morris, Patrick [mailto:patrick.morris at hp.com]
>> Sent: 11 January 2010 18:25
>> To: Scott, Ewan
>> Cc: Nagios Mailinglist
>> Subject: Re: [Nagios-users] question about running Nagios on
>> Solaris LDom and Zone servers
>>
>> Scott, Ewan wrote:
>>>
>>> I am about to put Nagios on both the primary LDom physical servers
>>> and
>>> all the virtual guest systems which run on them. Similarly I
>>> intend to
>>> run it on the primary host zone servers and the guest zones
>>> running on
>>> them. Is anyone aware of any problems - performance issues? - which
>>> can result from this blanket approach?
>>>
>>
>> Not enough information to say, but generally, yes, there are a lot of
>> issues that *could* result from doing things this way, but you
>> haven't
>> provided enough information to guess whether that'll be an issue
>> for you
>> or not.
>>
>> Nagios can be resource intensive, but it's all dependent on what
>> you're
>> doing with it (how many hosts, how many services, which version
>> you're
>> running, etc.). There have also been a lot of timing issues reported
>> with running Nagios in a VM, though I don't know whether those
>> apply to
>> Solaris guest zones.
>>
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>
> Thanks,
> Matthew Litwin
> mlitwin at stubhub.com
> 415.222.8475
>
>
> **********************************************************************
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> the intended recipient please inform the sender immediately; you
> should then delete the email and remove any copies from your system.
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> necessarily be those of Scottish Borders Council.
> Please be advised that Scottish Borders Council's incoming and
> outgoing email is subject to regular monitoring and any email may
> require to be disclosed by the Council under the provisions of the
> Freedom of Information (Scotland) Act 2002.
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