Linux OID's for CPU,Memory and Disk Statistics
SNMP Basics
SNMP stands for Simple Network Management Protocol and consists
of three key components: managed devices, agents, and
network-management systems (NMSs). A managed device is a node
that has an SNMP agent and resides on a managed network. These
devices can be routers and access server, switches and bridges,
hubs, computer hosts, or printers. An agent is a software module
residing within a device. This agent translates information into
a compatible format with SNMP. An NMS runs monitoring
applications. They provide the bulk of processing and memory
resources required for network management.
MIBs, OIDs Overview
MIB stands for Management
Information Base and is a collection of information organized
hierarchically. These are accessed using a protocol such as
SNMP. There are two types of MIBs: scalar and tabular. Scalar
objects define a single object instance whereas tabular objects
define multiple related object instances grouped in MIB tables.
MIB files for specific devices or systems can
be downloaded from here
OIDs or Object Identifiers uniquely
identify manged objects in a MIB hierarchy. This can be depicted
as a tree, the levels of which are assigned by different
organizations. Top level MIB object IDs (OIDs) belong to
different standard organizations. Vendors define private
branches including managed objects for their own products.
Here is a sample structure of an OID
Iso
(1).org(3).dod(6).internet(1).private(4).transition(868).products(2).chassis(4).card(1).slotCps(2)
.cpsSlotSummary(1).cpsModuleTable(1).cpsModuleEntry(1).cpsModuleModel(3).3562.3
Most of the people may be looking
for OID's for
Linux OID's for CPU,Memory and Disk Statistics for this
first you need to install SNMP server and clients. If you want
to install SNMP server and client installation in linux check
here
CPU
Statistics
Load
1 minute Load: .1.3.6.1.4.1.2021.10.1.3.1
5 minute Load: .1.3.6.1.4.1.2021.10.1.3.2
15 minute Load: .1.3.6.1.4.1.2021.10.1.3.3
CPU
percentage of user CPU time:
.1.3.6.1.4.1.2021.11.9.0
raw user cpu time:
.1.3.6.1.4.1.2021.11.50.0
percentages of system CPU time:
.1.3.6.1.4.1.2021.11.10.0
raw system cpu time:
.1.3.6.1.4.1.2021.11.52.0
percentages of idle CPU time:
.1.3.6.1.4.1.2021.11.11.0
raw idle cpu time:
.1.3.6.1.4.1.2021.11.53.0
raw nice cpu time:
.1.3.6.1.4.1.2021.11.51.0
Memory
Statistics
Total Swap Size:
.1.3.6.1.4.1.2021.4.3.0
Available Swap Space:
.1.3.6.1.4.1.2021.4.4.0
Total RAM in machine:
.1.3.6.1.4.1.2021.4.5.0
Total RAM used:
.1.3.6.1.4.1.2021.4.6.0
Total RAM Free:
.1.3.6.1.4.1.2021.4.11.0
Total RAM Shared:
.1.3.6.1.4.1.2021.4.13.0
Total RAM Buffered:
.1.3.6.1.4.1.2021.4.14.0
Total Cached Memory:
.1.3.6.1.4.1.2021.4.15.0
Disk
Statistics
The snmpd.conf needs to be edited. Add the following
(assuming a machine with a single '/' partition):
disk / 100000
(or)
includeAllDisks 10% for all partitions and disks
The OIDs are as follows
Path where the disk is mounted:
.1.3.6.1.4.1.2021.9.1.2.1
Path of the device for the partition:
.1.3.6.1.4.1.2021.9.1.3.1
Total size of the disk/partion (kBytes):
.1.3.6.1.4.1.2021.9.1.6.1
Available space on the disk:
.1.3.6.1.4.1.2021.9.1.7.1
Used space on the disk:
.1.3.6.1.4.1.2021.9.1.8.1
Percentage of space used on disk:
.1.3.6.1.4.1.2021.9.1.9.1
Percentage of inodes used on disk:
.1.3.6.1.4.1.2021.9.1.10.1
Examples
These Commands you need to run on the SNMP server
Get available disk space for / on the target host
#snmpget -v 1 -c "community"
target_name_or_ip .1.3.6.1.4.1.2021.9.1.7.1
this will return available disk space for the first entry in the
'disk' section of snmpd.conf; replace 1 with n for the nth entry
Get the 1-minute system load on the target host
#snmpget -v 1 -c "community"
target_name_or_ip .1.3.6.1.4.1.2021.10.1.3.1
Get the
5-minute system load on the target host
#snmpget -v 1 -c "community"
target_name_or_ip .1.3.6.1.4.1.2021.10.1.3.2
Get the
15-minute system load on the target host
#snmpget -v 1 -c "community"
target_name_or_ip .1.3.6.1.4.1.2021.10.1.3.3
Get amount of available swap
space
on the target host
#snmpget -v 1 -c "community" target_name_or_ip
.1.3.6.1.4.1.2021.4.4.0
