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Tasks

Monitoring Through SNMP

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Please Note:

Monitoring Through SNMP

You can monitor disk partitions, files, load average, and processes by setting up SNMP polling. Configure SNMP at the CLI in the network category and the snmp command.

When enabling SNMP, you must specify a whitelist of IP addresses for SNMP managers. CIDR control access is supported.

CT-VL supports both SNMP v3 and v2c. SNMP v3 supports password authentication, encryption, and a choice of encryption and password hashing algorithms.

Note

SNMP traps are not supported.

Supported MIB OIDs

Below are some MIB OIDs that CT-VL supports:

CPU Load Average Monitoring

 1 minute load average   .1.3.6.1.4.1.2021.10.1.3.1
 5 minute load average   .1.3.6.1.4.1.2021.10.1.3.2
15 minute load average   .1.3.6.1.4.1.2021.10.1.3.3

System Uptime

.1.3.6.1.2.1.1.3.0

Memory Statistics

Total Memory        .1.3.6.1.4.1.2021.4.5.0
Total Memory Used   .1.3.6.1.4.1.2021.4.6.0
Total Memory Free   .1.3.6.1.4.1.2021.4.11.0
Total Swap Space    .1.3.6.1.4.1.2021.4.3.0
Total Availabe Swap .1.3.6.1.4.1.2021.4.4.0

Disk Statistics:

Total size of disk partition .1.3.6.1.4.1.2021.9.1.6.1
Total disk space used        .1.3.6.1.4.1.2021.9.1.8.1
Total available disk space   .1.3.6.1.4.1.2021.9.1.7.1

Examples

Below are examples using the snmpwalk command.

Get Total Memory on CT-VL VM

snmpwalk -v 2c -c mystring ctvl-ip .1.3.6.1.4.1.2021.4.5.0
UCD-SNMP-MIB::memTotalReal.0 = INTEGER: 16431432 kB

Get System Uptime

snmpwalk -v 2c -c mystring ctvl-ip .1.3.6.1.2.1.1.3.0
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (22329) 0:03:43.29

Note

  • SNMP on CT-VL is disabled by default. Use the CLI to enable access.

  • SNMP manager(s) must be set to allow access to CT-VL.

Configuring SNMP

  1. To configure SNMP, use the network snmp CLI command.

    main> network snmp
usage: snmp command [options]SNMP Configurationcommands:
  user         SNMPv3 user setup
  community    SNMPv2c community access. Do not set if you don't want to enable SNMPv2
  monitor      Monitor Services Setup (processes, load average, disk space, and file size)
  manager      SNMP Managers Setup
  service      Enable, disable, and show SNMP Service
  system       SNMP System Information Setup

  2. Create a user.

    main> network snmp user
usage: user [-h] [--show] [--add USERNAME] [--delete USERNAME [USERNAME ...]]
    [--authpass PASSWORD] [--privpass PASSWORD] [-x {DES,AES}]
    [-a {MD5,SHA}]

  3. Create a community string.

    main> network snmp community
usage: community [-h] [--show] [--add STRING] [--delete STRING] [-y]

  4. Enable SNMP as SNMP is disabled by default.

    main> network snmp service --enable

  5. Set SNMP managers who will access CT-VL.

    main> network snmp manager
usage: server [-h] [--show] [--add IP [IP ...]] [--remove IP [IP ...]]

  6. Monitor disk, file, load, and processes.

    main> network snmp monitor
usage: monitor [-h] [--show] [--set {disk,file,load,proc}]
       [--delete {disk,file,load,proc}] [--value VALUE]

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