SNMP Probe for Least-loaded predictor

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Mar 18th, 2010
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Good day,


I have a question regarding configuration on an SNMP probe for use with the least-loaded predictor. We are required to to set this up for an implementation for a customer.


Utilising getif and google, our old friend, I have the required OID's. The first one seems to be functioning fine (CPU utilisation). I am required to configure two, the second one is free memory.


My question is, how would one set this probe up? I have tried playing around with  absolute values with no joy. I get "Server load hit max value for type ..." which ever I use, percentile or absolute. This is sort of reverse, but not getting it to work.


Any pointers or suggestions would be greatly appreciated.


The OID's are for HP DL 308's:


Node Name: cpqOsCpuTimePercent
OID : .1.3.6.1.4.1.232.19.2.3.2.1.4.9

Node Name: cpqOsMemAvailableKBytes
OID: .1.3.6.1.4.1.232.19.2.4.2.0


This the memory we get back from the SNMP query: 7238260. Here is the definition from this OID. Hope this correct.


Available KBytes is the amount of physical memory available to processes
running on the computer, in KBytes. It is calculated by summing space on
the Zeroed, Free, and Standby memory lists. Free memory is ready for use;
Zeroed memory is pages of memory filled with zeros to prevent later
processes from seeing data used by a previous process. Standby memory
is memory removed from a process's working set (its physical memory) on
route to disk, but is still available to be recalled.


Config and output below:


probe snmp WEBAPP-SERVER
  interval 10
  passdetect interval 15
  passdetect count 2
  community xyz
  oid .1.3.6.1.4.1.232.19.2.3.2.1.4.9
    threshold 80
    weight 10000
  oid .1.3.6.1.4.1.232.19.2.4.2.0
    type absolute max 1
    weight 6000



sho probe WEBAPP-SERVER de

probe       : WEBAPP-SERVER
type        : SNMP
state       : ACTIVE
description :
----------------------------------------------
   port      : 161     address     : 0.0.0.0         addr type  : -          
   interval  : 10      pass intvl  : 15              pass count : 2   
   fail count: 3       recv timeout: 10  
   version   : 1       community   : xyz

   oid string #1 : .1.3.6.1.4.1.232.19.2.3.2.1.4.9
   type      : PERCENTILE      max value : 100
   weight    : 10000           threshold : 80

   oid string #2 : .1.3.6.1.4.1.232.19.2.4.2.0
   type      : ABSOLUTE        max value : 1
   weight    : 6000            threshold : 1
                       --------------------- probe results --------------------
   probe association   probed-address  probes     failed     passed     health
   ------------------- ---------------+----------+----------+----------+-------
   serverfarm  : BPC_WEBFARM, predictor least-loaded
     real      : 19179APPTST0001[0]
                       10.31.194.199   92         92         0          FAILED

   Socket state        : CLOSED
   No. Passed states   : 0         No. Failed states : 1
   No. Probes skipped  : 0         Last status code  : 0
   No. Out of Sockets  : 0         No. Internal error: 0
   Last disconnect err : Server load hit max value for type absolute
   Last probe time     : Thu Mar 18 13:57:41 2010
   Last fail time      : Thu Mar 18 13:35:01 2010
   Last active time    : Never
   Server load         : 16000

     real      : 19179APPTST0002[0]
                       10.31.194.200   91         91         0          FAILED

   Socket state        : CLOSED
   No. Passed states   : 0         No. Failed states : 1
   No. Probes skipped  : 0         Last status code  : 0
   No. Out of Sockets  : 0         No. Internal error: 0
   Last disconnect err : Server load hit max value for type absolute
   Last probe time     : Thu Mar 18 13:57:32 2010
   Last fail time      : Thu Mar 18 13:35:07 2010
   Last active time    : Never
   Server load         : 16000

     real      : 19179APPTST0003[0]
                       10.31.194.201   92         92         0          FAILED

   Socket state        : CLOSED
   No. Passed states   : 0         No. Failed states : 1
   No. Probes skipped  : 0         Last status code  : 0
   No. Out of Sockets  : 0         No. Internal error: 0
   Last disconnect err : Server load hit max value for type absolute
   Last probe time     : Thu Mar 18 13:57:44 2010
   Last fail time      : Thu Mar 18 13:35:04 2010
   Last active time    : Never
   Server load         : 16000


Thanks in advance.


Paul.

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