net-snmp安装笔记
1、下载5.3.4版本，最新5.7版本安装完成后启动时报can not find module错误，没有搞定，所以使用旧版本，wget http://sourceforge.net/projects/net-snmp/files/net-snmp/5.3.4/net-snmp-5.3.4.tar.gz/download
2、解压，tar xzvf net-snmp-5.3.4.tar.gz
3、cd net-snm-5.3.4,./configure,make,make install
4、缺省安装在/usr/local/bin下，相关文件在/usr/local/share/snmp下，配置文件可以放在本目录下
5、配置：
1）、从源文件目录下复制配置文件，cp EXAMPLE.conf /usr/local/share/snmp/snmpd.conf
2）、配置com2sec, vim /usr/local/share/snmp/snmpd.conf
查找com2sec, /com2sec
配置如下：
com2sec local localhost lh #source列指的是可以访问本snmp agent的客户端的ip
com2sec product 10.3.1.22 public # secname，community可以重复
com2sec product 10.3.1.165 public
#注意后面的group配置，secname要与上面的相吻合
group MyRWGroup v1 local
group MyRWGroup v2c local
group MyRWGroup usm local
group MyROGroup v1 product
group MyROGroup v2c product
group MyROGroup usm product
3）、保存，退出
6、启动，直接运行 snmpd
7、配置iptables，打开udp的161端口
1）、vim /etc/sysconfig/iptables
2)、添加 -A RH-Firewall-1-INPUT -p udp -m udp --dport 161 -j ACCEPT
3）、保存退出，重启iptables， service iptables restart
all is ok.
linux常用OID（来自互联网）：
CPU：
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
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
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HARD DISK
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