[mrtg] Re: using mrtg to monitor cpu and load

[tom carlile]

hey guys.  after doing some more digging i came up with some questions.
my initial goal was to monitor network traffic, cpu load and disk 
utilization on hosts using MRTG and net-snmp (ucd-snmp).
after reading deeper into net-snmp docs it seems that i can
specify something like this in my snmpd.conf:

disk /raid 80%
# if >80% returns "1" to 1.3.6.1.4.1.2021.9.100
# and sets error in      1.3.6.1.4.1.2021.9.101

load 3 3 3
# if load >3 for 1,5,15 returns "1" to 1.3.6.1.4.1.2021.10.100
# and sets the error in 	       1.3.6.1.4.1.2021.10.101

so, since i know the mib numbers i can query them with MRTG right?

so how would i specify my Target[] in the mrtg.cfg file?

i can't just do 1.3.6.1.4.1.2021.9.100&1.3.6.1.4.1.2021.9.101&1.3.6.1.4.1.2021.10.100&1.3.6.1.4.1.2021.10.101

beacuse in the Explicit OID section of the MRTG config manual it says 
that i can only specify 2 variables.  not only can i only specify two 
variables, but graphing "1" or "0" against a error description string
is going to be _real_ ugly! =)

do you guys see my problem?  i'd like to be able to GRAPH CPU load
over TIME, disk USAGE over TIME would be good too.  

am i misunderstanding something here?  any help would be appreciated!

tom carlile (tcarlile at origin.ea.com) wrote:
> 
> thanks paul,
> 
> looks like that site would be more helpful if i was using a Windows
> platform.  i compiled mrtg and the net-snmp packages on Solaris 2.7
> machines.  his unix configuration section is very sparce.
> 
> i basically just need to find how to setup those stats to be 
> provided by the net-snmp daemon and how to tell mrtg to collect them.
> can anyone else suggest anything?
> 
> Paul C. Williamson (pwilliamson at MANDTBANK.COM) wrote:
> > 
> > No hacking needed.  What kind of servers?  Netware, NT, Unix, or other?
> > 
> > Check out http://www.wtcs.org/snmp4tpc or something like that.  Gareth
> > does an awesome job of spelling out what needs to be done.
> > 
> > Good luck and keep us posted.  Remeber that mrtg only needs numbers,
> > it can graph anything.  I'm thinking about replacing the Leibert dial 
> > temp/humidity monitor with a weather station in our computer 
> > facilities to get some added trending and accessibility features.  Now all
> > I need to do is figure out how to justify graphing wind speed in a room!
> > 
> > Paul
> > 
> > >>> tom carlile <tcarlile at origin.ea.com> 02/01/01 03:46PM >>>
> > 
> > hi.  i've setup mrtg to monitor network traffic on a set
> > of production servers.  now it looks like i'll need to set it
> > up to monitor cpu, load and disk availability as well.
> > it doesn't seem that this is mentioned in the documentation.
> > someone online suggested that i'll have to hack up mrtg to
> > get that functionality out of it. 
> > 
> > surely this has been done before, and done right.  do you
> > guys know of any docs i can read to get me started? i am still
> > fairly unfamiliar with mibs - if someone has experience with
> > setting up mrtg with the net-snmp package (was ucd-snmp) to
> > do the above i'd love some pointers. 
> > 
> > thanks!
> > 
> > -- 
> > tom carlile <tcarlile at origin.ea.com>
> > w:512.434.6821 c:512.751.8830 x:46821
> > systems wrangler
> > 
> > 
> > --
> > Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
> > Archive     http://www.ee.ethz.ch/~slist/mrtg
> > FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
> > WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi
> 
> -- 
> tom carlile <tcarlile at origin.ea.com>
> w:512.434.6821 c:512.751.8830 x:46821
> systems wrangler
> 
> --
> Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
> Archive     http://www.ee.ethz.ch/~slist/mrtg
> FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
> WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi

-- 
tom carlile <tcarlile at origin.ea.com>
w:512.434.6821 c:512.751.8830 x:46821
systems wrangler

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi