Shulou(Shulou.com)06/03 Report--

Zabbix can monitor network devices (routers, switches, etc.) and server (linux, windows, etc.) devices through snmp protocol

Generally speaking, when we monitor the network of the server, we generally do not use the snmp interface, but use the way of agent to monitor, just add the key value. Of course, the way of monitoring with agent is very simple, as long as you select the right key value and add parameters to ok, we use snmp interface for monitoring today, and we have to use snmp interface when we use snmp to monitor network equipment.

Monitoring with snmp protocol to open the snmp service, install the snmp service on the linux server, and configure it, please do your own Baidu. This film only talks about the principle. The network device needs to start the snmp service with a command and configure the snmp password.

Monitoring principle of snmp: Oid and Mib Library

Oid object identifier, made up of numbers

Data is obtained through snmp mainly through oid.

Use oid to obtain monitoring data:

Snmpwalk-v 2c-c password 192.168.50.172 .1.3.6.1.4.1.2021.10.1.3 # 2c is the version of snmp used to monitor cpuload

Snmpwalk-v 2c-c password .1.3.6.1.2.1.2 # used to monitor network card information

Just because their oid is different, ".1.3.6.1.4.1.2021.10.1.3" represents cpuload and ".1.3.6.1.2.1.2" represents network card information, which is not the case on a server. Oid is universal.

These two oid, the first ".1.3.6.1" is the same, and then carried on the branch, in fact, there are many branches, each branch represents a different content

MIB Library:

Generally speaking, oid is relatively difficult to remember, just like our ip address and domain name. People only remember the domain name ok, not the ip address. MIB plays such a role. The MIB library assigns a name to each oid, and we can also get data by name, as shown below.

The running result of snmpwalk-v 2c-c password 192.168.50.172 laLoad # is the same as using OID above.

The key monitoring contents of switches and routers are network port status and traffic. When monitoring network card traffic, you should use 64-bit to monitor, do not use 32-bit, 32-bit easy overflow, 64-bit monitoring is accurate.

Use snmp for monitoring:

Interface type to choose: SNMPV2 agent version Key: monitoring item name SNMP oid: is the monitoring item idSNMP community: is the password of snmp, defined in the global macro is ok, but there is a snmp template, but manually added will also be able

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