MRTG监控 ON RHEL6

Replace with (make sure you supply appropriate values):

syslocation Linux (RH3_UP2), Home Linux Router.

syscontact Vivek G Gite <vivek@nixcraft.com>

For your convenient, here is my /etc/snmp/snmpd.conf file. Feel free to use this file. Make sure you make backup of your existing file if you use this file as it is.

Start your snmp server and test it:

(a) Make sure when linux comes up snmpd always starts:

 # chkconfig snmpd on

(b) Make sure service start whenever Linux comes up (after reboot):

 # service snmpd start

(c) Finally test your snmp server:

 # snmpwalk -v 1 -c public localhost IP-MIB::ipAdEntIfIndex

Mrtg software may install during initial installation; you can verify if MRTG installed or not with following RPM command:

rpm -qa | grep mrtg

If mrtg already installed please see step # 5; else use rpmfind.net to find MRTG rpm or up2date command to install MRTG software:

# up2date -v -i mrtg

Fedora Linux user can use yum command as follows to install MRTG:

# yum install mrtg

(a) Create document root to store mrtg graphs/html pages:

# mkdir -p /var/www/html/mymrtg/

(b) Run any one of the following cfgmaker command to create mrtg configuration file:

# cfgmaker --global ''WorkDir: /var/www/html/mymrtg'' --output /etc/mrtg/mymrtg.cfg public@localhost

OR (make sure your FQDN resolves, in following example i''m using rh9.test.com which is my router FQDN address)

# cfgmaker --global ''WorkDir: /var/www/html/mymrtg'' --output /etc/mrtg/mymrtg1.cfg public@rh9.test.com

(c) Create default index page for your MRTG configuration:

# indexmaker --output=/var/www/html/mymrtg/index.html /etc/mrtg/mymrtg.cfg

注意：这一步可能会报如下的错误：

Use of uninitialized value $first in hash element at /usr/bin/indexmaker line 353.
这是上一步(cfgmaker那一步)生成的文件某种原因全被注释了,如

### Interface 1 >> Descr: ''lo'' | Name: ''lo'' | Ip: ''127.0.0.1'' | Eth: '''' ###
### The following interface is commented out because:
### * it is a Software Loopback interface
.

.

### Interface 2 >> Descr: ''eth0'' | Name: ''eth0'' | Ip: ''192.168.0.117'' | Eth: ''52-54-00-00-00-17'' ###
### The following interface is commented out because:
### * has a speed of 0 which makes no sense
这时只要手动修改/etc/mrtg/mymrtg.cfg去注释并修改第二个接口的下面一行

MaxBytes[localhost_2]: 1250000
再运行以上命令就不会有问题

(d) Copy all tiny png files to your mrtg path:

# cp -av /var/www/mrtg/*.png /var/www/html/mymrtg/

(a) Run mrtg command from command line with your configuration file:

# env LANG=C /usr/bin/mrtg /etc/mrtg/mymrtg.cfg

# /etc/init.d/httpd start

Note: You may get few warning mes

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