Monitoring Performance with SNMP

[tzach]

SNMP is widely used binary protocol for system monitoring.
Information elements are define using MIBs in a ASN.1 format.
Each MIB includes a tree of OID, each refer to a particular information element.
SNMP allows monitoring, notification and updates. This issue scope is the first two.

Other OS support a set of standards MIBs.
It will be useful for OSv to use the same MIBs, making integration with existing monitoring system easier.
The following include a small subset of important and relevant MIB and OID.

• Host info [1]
  HOST-RESOURCES-MIB::hrSystem::hrSystemUptime
  HOST-RESOURCES-MIB::hrSystem::hrSystemDate
  HOST-RESOURCES-MIB::hrDevice::hrNetworkTable
• System info [2]
  UCD-SNMP-MIB::systemStats::ssCpuIdle
  UCD-SNMP-MIB::systemStats::ssRawSwapIn
  UCD-SNMP-MIB::systemStats::ssRawSwapOut
  UCD-SNMP-MIB::systemStats::ssCpuRawWait
  UCD-SNMP-MIB::systemStats::ssCpuRawIdle
  UCD-SNMP-MIB::memory (see all OID in reference)
• networking [3]
  IF-MIB::ifTable
  IF-MIB::ifOutOctets
  IF-MIB::ifInOctets

[1] http://www.oidview.com/mibs/0/HOST-RESOURCES-MIB.html
[2] http://www.oidview.com/mibs/2021/UCD-SNMP-MIB.html
[3] http://www.oidview.com/mibs/0/IF-MIB.html

[tzach]

One alternative for implementation is
http://www.net-snmp.org/
a BSD like license and used in other OS