公司要实施一个部级的项目，我们公司的提供的产品要对接下客户的一个平台监控平台，该监控平台使用snmp，我们公司的产品不支持snmp，所以由我负责在现网实施snmp，记录这次现网
一、生成编译规则
1、下载snmp的tar包
2、解压
[root@localhost admin]# tar -zxvf net-snmp-5.7.1.tar.gz
drwxr-xr-x 18 1274 1274 4096 Sep 28 2011 net-snmp-5.7.1
-rw-rw-r-- 1 admin admin 6110619 Jul 23 14:37 net-snmp-5.7.1.tar.gz
3、生成编译规则
./configure --prefix=/usr/local/snmp --with-mib-modules='ucd-snmp/diskio ip-mib/ipv4InterfaceTable'
4、点击回车
5、点击回车：1、default version of-snmp-version:
6、点击回车：Systemcontact information（配置该设备的联系人）:
7、点击回车：System location (该设备的位置):
8、点击回车：Location to write logfile (日志文件位置): /var/log/snmpd.log
9、点击回车：Location to Write persistent(数据存储目录): /var/net-snmp
10、编译规则生成完成
二、安装
1、编译并安装
make && make install
2、编译安装完成
3、在snmp安装目录创建配置文件路径
[root@localhost snmp]# mkdir etc
[root@localhost snmp]# pwd
/usr/local/snmp
[root@localhost snmp]# ll
total 8
drwxr-xr-x 2 root root 4096 Jul 23 14:57 bin
drwxr-xr-x 2 root root 6 Jul 23 14:59 etc
drwxr-xr-x 3 root root 21 Jul 23 14:57 include
drwxr-xr-x 2 root root 4096 Jul 23 14:57 lib
drwxr-xr-x 2 root root 34 Jul 23 14:57 sbin
drwxr-xr-x 4 root root 27 Jul 23 14:57 share
4、在源文件目录下拷贝配置文件到安装的etc目录
[root@localhost snmp]# scp /home/admin/net-snmp-5.7.1/EXAMPLE.conf /usr/local/snmp/etc/snmpd.conf
You have mail in /var/spool/mail/root
[root@localhost snmp]# ll
total 8
drwxr-xr-x 2 root root 4096 Jul 23 14:57 bin
drwxr-xr-x 2 root root 23 Jul 23 15:01 etc
drwxr-xr-x 3 root root 21 Jul 23 14:57 include
drwxr-xr-x 2 root root 4096 Jul 23 14:57 lib
drwxr-xr-x 2 root root 34 Jul 23 14:57 sbin
drwxr-xr-x 4 root root 27 Jul 23 14:57 share
[root@localhost snmp]# cd etc/
[root@localhost etc]# ll
total 8
-rw-r--r-- 1 root root 6993 Jul 23 15:01 snmpd.conf
5、编辑配置文件
a、配置允许网络访问，按照截图中的方式修改
b、选择v2c SNMP协议的版本，按照截图中的方式修改
c、设置访问权限，按照截图中的方式修改
三、启动和调试
1、启动
[root@localhost etc]# /usr/local/snmp/sbin/snmpd -c /usr/local/snmp/etc/snmpd.conf
2、检查进程和端口
[root@localhost etc]# netstat -an |grep -w 161
[root@localhost etc]# ps auxf |grep -w snmp
root 26440 0.0 0.0 112708 980 pts/0 S+ 15:10 0:00 | \_ grep --color=auto -w snmp
[root@localhost etc]# ps auxf |grep snmp
root 3327 0.0 0.0 112708 956 pts/0 S+ 15:11 0:00 | \_ grep --color=auto snmp
root 1696 0.2 0.0 187880 5164 ? S 15:11 0:00 /usr/local/snmp/sbin/snmpd -c /usr/local/snmp/etc/snmpd.conf
[root@localhost etc]# netstat -anu |grep 161
udp 0 0 0.0.0.0:161 0.0.0.0:*
[root@localhost etc]#
3、添加到开机启动项中
4、添加防火墙规则
firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 1 -s 10.87.18.101/24 -p udp --dport=161 -j ACCEPT
[root@localhost init.d]# firewall-cmd --reload
5、测试
6、附上oid
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
System Uptime: .1.3.6.1.2.1.1.3.0
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.
