SNMP-Informant-STD Memory Usage (Windows)

ajeskey · Post by **ajeskey** » Tue Jun 21, 2005 10:07 am

This uses the SNMP-Informants Standard MIB Add-On to graph Memory stats on Windows.

You must have SNMP-Informant Standard MIB Add-On install on the Windows host you are polling in order for this to work. If you are not familiar with SNMP-Informant, it is a free download, and is extremely stable, since it does not add any services to the machine.

I have tested this on windows 2000 and windows 2003 systems and seems to be accurate.

Note
-----
There is a custom CDEF included in this that requiers the order remain the same in the graph template, if you change it it will break.

What it Graphs
--------------------
* Installed Memory (Static)
* Available Memory (Current and Average)
* Used Memory (Current and Average)
* Cache Resident Memory (Current and Average)
* Page Faults (Current and Average)

chadw · Post by **chadw** » Wed Jun 22, 2005 11:24 am

Thank you for the snmp-informant templates! I was having trouble getting these parameters with the default Windows templates.

I'm having some trouble with this graph though. The installed memory is nan, as is used memory. I'm guessing the used memory parameter is simply installed memory - available memory, so it also becomes nan.

I can see the OID for installed mem from snmp:

# snmpwalk -v 1 -c public x.x.x.x .1.3.6.1.2.1.25.2.2.0
HOST-RESOURCES-MIB::hrMemorySize.0 = INTEGER: 1048112 KBytes

The polled machine is Windows 2000.

Any idea why this isn't working?

ajeskey · Post by **ajeskey** » Wed Jun 22, 2005 11:35 am

What happens when you poll .1.3.6.1.2.1.25.2.2.0 with SNMPv2? I am getting the correct info from Host-Resourves-V2, I never tested with v1

If you want to force this graph use V1 go to the Data Template "SNMP - Informant-STD - Memory Installed", at the bottom you'll see "SNMP Version (1, 2, or 3)" but a 1 in there and see if it works.

You may end up with a crazy number, if that is the case try turning the applied CDEF for the Installed memory GPRINT to "None" (its set to "Multiply by 1024" now)

You are correct about the Used Memory; it is derived from Installed - Available.

Let me know if any of that helps

chadw · Post by **chadw** » Wed Jun 22, 2005 12:21 pm

I don't think changing the snmp version helps:

# snmpwalk -v 2c -c public x.x.x.x .1.3.6.1.2.1.25.2.2.0
HOST-RESOURCES-MIB::hrMemorySize.0 = INTEGER: 1048112 KBytes

# snmpwalk -v 1 -c public x.x.x.x .1.3.6.1.2.1.25.2.2.0
HOST-RESOURCES-MIB::hrMemorySize.0 = INTEGER: 1048112 KBytes

Could the problem be the "KBytes" that the snmpwalk returns? It's not a number.

If I dump the rra file with rrdtool dump, all of the records have NaN.

ajeskey · Post by **ajeskey** » Wed Jun 22, 2005 12:41 pm

no since its a returned integer, your snmpwalk tool is just transforming it to kbytes.

First try turning off the CDEF for the Installed memory under the graph template. If that doesnt help, try pulling all the data sources data templates and graph referances out, reimport it.

Are you using the default SNMPD that comes with windows?

chadw · Post by **chadw** » Wed Jun 22, 2005 1:32 pm

I turned the CDEFs off and it didn't make a difference. Yes, the windows servers are using the default snmpd. I'm running cacti on Redhat ES 3.

I think the problem is with getting the data into the rra file. I see only NaN in my rrdtool dumps.

I'm using rrdtool 1.0.49. Should I try a 1.2 release? I'm also using cactid 0.8.6d on cacti-0.8.6e.

ajeskey · Post by **ajeskey** » Wed Jun 22, 2005 2:00 pm

I am on "c" and runing 1.0.49

I would tend to belive versions mis match is your problem, since both things that don't show up have CDEFs applied to them; and CDEFs are an RRDtool function. try getting your RRD. I know that when I tried to get "d" working with my current version of RRDtool nothing workd.

I am fairly sure that you should be runnign 1.2 if you are on "d"

ajeskey · Post by **ajeskey** » Wed Jun 22, 2005 10:01 pm

I am curious to hear if anyone else is having issues with this. I see a number of people have downloaded it... anyone?

chadw · Post by **chadw** » Thu Jun 23, 2005 11:14 am

I've upgraded to rrdtool 1.2.6 (the only RPM I could install without upgrading perl).

The problem is a little different now. Now instead of NaN, I get 0.00.

ajeskey · Post by **ajeskey** » Thu Jun 23, 2005 11:16 am

try turnign off the CDEF now for installed memory just to see what happens. its a good sign that used shows up as a negitive number now, it means that the CDEF is actuayl working now. So its an issue with the installed memory being read from the machine (or how cacti is handeling that)

chadw · Post by **chadw** » Thu Jun 23, 2005 11:30 am

I turned the CDEF off, it made no difference. Here's some output from my .rra:

# rrdtool dump xxx_meminforminstalled_2147.rrd | grep row | grep -v NaN
<pdp_per_row> 1 </pdp_per_row> 
 <row><v> 0.0000000000e+00 </v></row>
<pdp_per_row> 6 </pdp_per_row>

Notice that it only updated the RRD once, when it was created, and it was updated with a 0.00000.

Here's the memAvailable file, it has many updates:

# rrdtool dump xxx_meminformavailable_2145.rrd | grep row | grep -v NaN
<pdp_per_row> 1 </pdp_per_row> 
 <row><v> 7.5015140818e+08 </v></row>
 <row><v> 7.5792793600e+08 </v></row>
 <row><v> 7.5661721600e+08 </v></row>
 <row><v> 7.5102617600e+08 </v></row>
 <row><v> 7.5650468523e+08 </v></row>
 <row><v> 7.5680877227e+08 </v></row>
 <row><v> 7.5575909035e+08 </v></row>
 <row><v> 7.5739136000e+08 </v></row>
<pdp_per_row> 6 </pdp_per_row>

If I get the value via snmpwalk, I get a response that's not zero:

# snmpwalk -v 2c -c public x.x.x.x .1.3.6.1.2.1.25.2.2.0
HOST-RESOURCES-MIB::hrMemorySize.0 = INTEGER: 1179120 KBytes

Thanks,

Chad

chadw · Post by **chadw** » Thu Jun 23, 2005 12:09 pm

Here's the cacti.log section where it puts the value into poller_output:

06/23/2005 02:30:25 PM - CACTID: Poller[0] Host[136] SNMP: v2: x.x.x.x, dsname: meminformInstalled, oid: .1.3.6.1.2.1.25.2.2.0, value: 1048112 KBytes
06/23/2005 02:30:25 PM - CACTID: Poller[0] DEBUG: SQLCMD: insert into poller_output (local_data_id,rrd_name,time,output) values (2176,'meminformInstalled','2005-06-23 14:30:18','1048112 KBytes')

Here's the output from cacti.log when the .rra gets created:

06/23/2005 02:31:23 PM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool create /usr/local/cacti-0.8.6e/rra/nltechsupport_meminforminstalled_2176.rrd --step 300 DS:meminformInstalled:GAUGE:600:0:U RRA:AVERAGE:0.5:1:600 RRA:AVERAGE:0.5:6:700 RRA:AVERAGE:0.5:24:775 RRA:AVERAGE:0.5:288:797 RRA:MIN:0.5:1:600 RRA:MIN:0.5:6:700 RRA:MIN:0.5:24:775 RRA:MIN:0.5:288:797 RRA:MAX:0.5:1:600 RRA:MAX:0.5:6:700 RRA:MAX:0.5:24:775 RRA:MAX:0.5:288:797 RRA:LAST:0.5:1:600 RRA:LAST:0.5:6:700 RRA:LAST:0.5:24:775 RRA:LAST:0.5:288:797

06/23/2005 02:31:23 PM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/local/cacti-0.8.6e/rra/nltechsupport_meminforminstalled_2176.rrd --template meminformInstalled N:U

Somewhere between the poll and updating poller_output, the value gets changed from 1048112 to U.

chadw · Post by **chadw** » Thu Jun 23, 2005 12:35 pm

Upon further checking, it looks like the problem is this line:

06/23/2005 02:30:25 PM - CACTID: Poller[0] DEBUG: SQLCMD: insert into poller_output (local_data_id,rrd_name,time,output) values (2176,'meminformInstalled','2005-06-23 14:30:18','1048112 KBytes')

I manually inserted a record into poller_output while it was populating from cactid without the "KBytes" string and the .rra file updated correctly:

insert into poller_output (local_data_id,rrd_name,time,output) values (2176,'meminformInstalled','2005-06-23 14:30:18','1048112')

Now, how do I prevent it from happening?

ajeskey · Post by **ajeskey** » Thu Jun 23, 2005 7:28 pm

you've got me on this one. You may want to start a thread in the general help forums and point them this way.

Glad to see that its working. Does it look good / what you wanted?

I think the next thing I should do with this is get it to report in bytes... but I've got a few others under my belts ATM, we'll see.

chadw · Post by **chadw** » Fri Jun 24, 2005 7:00 am

I posted a message in the general forum and The Witness told me to upgrade cactid to 0.8.6e, I'm currently using 0.8.6d. He said the e version would strip the KBytes string off the value.

Thanks again for your help.

Cacti

SNMP-Informant-STD Memory Usage (Windows)

SNMP-Informant-STD Memory Usage (Windows)

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