利用net-snmp读取windows，linux，snmp设备数据（cpu，内存，网卡）

Love The Way You Lie 2022-08-25 08:09 12阅读 0赞

首先编译的时候configure参数加上--with-mib-modules='ucd-snmp/diskio ip-mib/ipv4InterfaceTable'

默认的配置没有这些模块，需要加上

make;make install后，使用命令net-snmp-config --snmpconfpath查看配置文件的目录

然后修改snmp.conf，添加 mibs +ALL

修改snmpd.conf，在rocommunity public default -V systemonly，把 -V systemonly去掉。这是设置权限，去掉后为能访问全部

假设community为public

snmpwalk -v 2c -c public localhost

这时应该会出来好多好多信息

--------------------------------------------------

以下是**Linux**下一些常用的OID

**CPU的 **  
  
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

\-------------------------------------------------------------------------------

**内存的**   
  
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

\-------------------------------------------------------------------

**硬盘的**  
  
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

\----------------------------------------------------------------

以下是**windows**下常用的OID

**CPU**

.1.3.6.1.2.1.25.3.3.1.2

如果有一个双核cpu则有2个值，显示当前负载

**内存，硬盘**

内存跟硬盘都统一在mib2.host.hrStorage里 1.3.6.1.2.1.25.2

hrStorageType节点，hrStorageFixedDisk表示硬盘，hrStorageVirtualMemory是虚拟内存，hrStorageRam是内存

根据id号查：

hrStorageAllocationUnits是簇的大小

hrStorageSize是有多少簇，两者想乘就是总容量