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Bala_128530's avatar
Bala_128530
Icon for Nimbostratus rankNimbostratus
Nov 05, 2015

SNMP DCA based node monitor

Hi, I am trying to implement SNMP based monitoring on node, i am getting current CPU utilization. When it reaches the threshold, node status is not getting into down state. Did i missed anything on configuration?

Example : CPU threshold 5%, SNMP trap result is 24%. still node is not going down.

SNMP LOG:

SNMP output:

snmpwalk -c public -v 2c 1xx.xx4.1x.1xx .1.3.6.1.2.1.25.3.3.1.2

HOST-RESOURCES-MIB::hrProcessorLoad.2 = INTEGER: 12
HOST-RESOURCES-MIB::hrProcessorLoad.3 = INTEGER: 25
HOST-RESOURCES-MIB::hrProcessorLoad.4 = INTEGER: 7
HOST-RESOURCES-MIB::hrProcessorLoad.5 = INTEGER: 27
HOST-RESOURCES-MIB::hrProcessorLoad.6 = INTEGER: 8
HOST-RESOURCES-MIB::hrProcessorLoad.7 = INTEGER: 6

Any help or a point in the right direction would be wonderful! Thanks!

application delivery
LTM
monitor
  • Bala_128530's avatar
    Bala_128530
    Icon for Nimbostratus rankNimbostratus
    Nov 09, 2015

    Hi, Anybody worked on SNMP based monitoring, please give me some suggestion.

     

    -Bala.

     

  • Chuchoman's avatar
    Chuchoman
    Icon for Nimbostratus rankNimbostratus
    Nov 21, 2023

    Hello, I have a different problem. 1. First when I created the monitor "admin_snmp_dca_base" I did not see the logs in cat /shared/tmp/snmpdca.log

    ________________________________________________________________________________________

    ========== /usr/share/monitors/SNMPDCABASE_monitor ==========
    Node Name: /Common/xamp03
    Node Address: ::ffff:10.1.40.52
    SNMP version: v1, community = <sensitive data redacted>, port: 161
    Monitor: snmp_dca_base.

    User OIDs:
    .1.3.6.1.2.1.25.1.6.0 - 0.000000

    Main:Weight =1 (weight1 = 0.000000, weight2 = 0.000000)
    The default minimum is 1.
    [root@AC:Active:In Sync] config #

    ________________________________________________________________________________________

    then I restarted the snmp agent (Agent Start / Stop) and the OID data that I am pulling now appears.

    I don't know what relationship they have with the monitor, but it already works.

     

    ========== /usr/share/monitors/SNMPDCABASE_monitor ==========
    Node Name: /Common/xamp03
    Node Address: ::ffff:10.1.40.52
    SNMP version: v1, community = <sensitive data redacted>, port: 161
    Monitor: snmp_dca_base.

    User OIDs:
    .1.3.6.1.2.1.25.1.6.0 - 46.000000

    i = 0, util = 46.000000, threshold=85.000000, coeff=2.000000

    Main:Weight =8 (weight1 = 8.272696, weight2 = 0.000000)
    [root@AC:Active:In Sync] config #

    ________________________________________________________________________________________

    When I disable the snmp agent for windows (from the windows server), the node still marks green as active, so this is wrong.

    root@(AC)(cfg-sync In Sync)(Active)(/Common)(tmos)# list ltm monitor snmp-dca-base
    ltm monitor snmp-dca-base admin_snmp_dca_base {
    community public
    defaults-from snmp_dca_base
    interval 10
    time-until-up 0
    timeout 30
    user-defined hrSystemProcess .1.3.6.1.2.1.25.1.6.0
    user-defined hrSystemProcess_coefficient 2
    user-defined hrSystemProcess_threshold 85
    version v1
    }
    ltm monitor snmp-dca-base snmp_dca_base {
    community public
    interval 10
    time-until-up 0
    timeout 30
    version v1
    }
    root@(AC)(cfg-sync In Sync)(Active)(/Common)(tmos)# show ltm node xamp03

    ------------------------------------------
    Ltm::Node: xamp03 (10.1.40.52)
    ------------------------------------------
    Status
    Availability : available
    State : enabled
    Reason : Node address is available
    Monitor : admin_snmp_dca_base
    Monitor Status : up
    Session Status : enabled

    Traffic ServerSide General
    Bits In 0 -
    Bits Out 0 -
    Packets In 0 -
    Packets Out 0 -
    Current Connections 0 -
    Maximum Connections 0 -
    Total Connections 0 -
    Total Requests - 0
    Current Sessions - 0

    root@(AC)(cfg-sync In Sync)(Active)(/Common)(tmos)#

     

    I am trying to implement an snmp monitor but it is not yet functional, can someone help me see if I am doing something wrong, or is the snmp monitoring solution not yet functional in BIG-IP F5?