- Log in as root user and right click anywhere on the desktop then, click on Open Terminal.
- To verify if the SNMP package is installed, there are few ways:
[root@localhost ~]# rpm -qa | grepsnmp
[root@localhost ~]# snmpwalk
-bash: snmpwalk: command not found
[root@localhost ~]# ls /etc/snmp*
ls: /etc/snmp*: No such file or directory
This mean net-snmp package is not installed yet.
- Install net-snmp & net-snmp-utils package via yum or up2date
CentOS/Fedora:
[root@localhost ~]# yum install net-snmp net-snmp-utils Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile * base: mirror.usonyx.net * extras: mirror.usonyx.net * updates: mirror.usonyx.net Setting up Install Process Resolving Dependencies –> Running transaction check —> Package net-snmp.i386 1:5.3.2.2-17.el5_8.1 set to be updated –> Processing Dependency: libsensors.so.3 for package: net-snmp —> Package net-snmp-utils.i386 1:5.3.2.2-17.el5_8.1 set to be updated –> Running transaction check —> Package lm_sensors.i386 0:2.10.7-9.el5 set to be updated –> Finished Dependency Resolution Dependencies Resolved ======================================================================= ========= Package Arch Version Repository Size ======================================================================= ========= Installing: net-snmp i386 1:5.3.2.2-17.el5_8.1 updates 703 k net-snmp-utils i386 1:5.3.2.2-17.el5_8.1 updates 191 k Installing for dependencies: lm_sensors i386 2.10.7-9.el5 base 511 k Transaction Summary ======================================================================= Install 3 Package(s) Upgrade 0 Package(s) Total download size: 1.4 M Is this ok [y/N]: y Downloading Packages: (1/3): net-snmp-utils-5.3.2.2-17.el5_8.1.i386.rpm | 191 kB 00:00 (2/3): lm_sensors-2.10.7-9.el5.i386.rpm | 511 kB 00:01 (3/3): net-snmp-5.3.2.2-17.el5_8.1.i386.rpm | 703 kB 00:01 ——————————————————————————– Total 408 kB/s | 1.4 MB 00:03 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : lm_sensors 1/3 Installing : netsnmp 2/3 Installing : net-snmputils 3/3 Installed: net-snmp.i386 1:5.3.2.2-17.el5_8.1 net-snmp-utils.i386 1:5.3.2.2-17.el5_8.1 Dependency Installed: lm_sensors.i386 0:2.10.7-9.el5 Complete!
- For RHEL, use command:
# up2date -v -i net-snmp-utils net-snmp
The SNMP service is now installed.
Configuring the SNMP Service on Linux RHEL/CentOS/Fedora
- Edit the file /etc/snmp/snmpd.conf using a text editor such as vi, enter:
# vi /etc/snmp/snmpd.conf -
Press ‘I’ to enter the insert mode. Now, change/modify line(s) as follows:
Find the following line:
com2secnotConfigUser default public
Replace with (make sure you replace 192.168.0.0/24 with your network/subnet) the following lines:
com2sec local localhost public
com2secmynetwork 192.168.0.0/24 public
Scroll down a bit and find the following lines:
groupnotConfigGroup v1 notConfigUser
groupnotConfigGroup v2c notConfigUser
Replace with:
groupMyRWGroup v1 local
groupMyRWGroup v2c local
groupMyRWGroupusm local
groupMyROGroup v1 mynetwork
groupMyROGroup v2c mynetwork
groupMyROGroupusmmynetwork
Again scroll down a bit and locate the following line:
viewsystemview included system
Replace with:
view all included .1
Again scroll down a bit and find the following line:
access notConfigGroup "" any noauth exact systemview none none
Replace with:
accessMyROGroup "" any noauth exact all none none
access MyRWGroup "" any noauth exact all all none
Scroll down a bit and find the following lines:
syslocation Unknown (edit /etc/snmp/snmpd.conf)
syscontact Root (configure /etc/snmp/snmp.local.conf)
Replace with (make sure you supply appropriate values):
syslocation Linux (RH3_UP2), Home Linux Router.
syscontactYourNameHereyou@example.com
Now to exit the text editor, press “Esc” key and the type “:wq”. This will save the changes you made and then quit the text file.
Make sure you back up your file by entering the following command:
# cp /etc/snmp/snmp.conf /etc/snmp/snmp.conf.backup
- Start your SNMP server and test it:(a) To sure when Linux comes up snmpd always starts after the system reboot
- # chkconfigsnmpd on
(b) Start the snmpd service # servicesnmpd start (c) Finally, test your snmp server# snmpwalk -v 1 -c public localhost IP-MIB::ipAdEntIfIndex
The SNMP is now configured.
On Ubuntu
Installing the SNMP Service on:
1. Log in as ROOT user and open the terminal by pressing CTRL+ALT+T.
2. Now enter the following command:
1. Log in as ROOT user and open the terminal by pressing CTRL+ALT+T.
2. Now enter the following command:
# sudo apt-get update
# sudo apt-get install snmpd
3. This will install SNMP service and show you a completion message.
# sudo apt-get install snmpd
3. This will install SNMP service and show you a completion message.
Configuring the SNMP Service
- Type the following command in the terminal to open the text file using text editor ‘vi’:
# vi /etc/snmp/snmpd.conf - Edit/Update the file as follows:
rocommunity public
syslocation “Describe the server’s location”
syscontact youremail@address.com - Now save and exit the textfile by pressing ENTER and then :wq.
- Now edit the following file:
# vi /etc/default/snmpd - Update it as follows:
# This file controls the activity of snmpd and snmptrapd # MIB directories. /usr/share/snmp/mibs is the default, but # including it here avoids some strange problems. export MIBDIRS=/usr/share/snmp/mibs # snmpd control (yes means start daemon). SNMPDRUN=yes # snmpd options (use syslog, close stdin/out/err). # replace 204.x.y.z with your public IP SNMPDOPTS='-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid 127.0.0.1 204.x.y.z' # snmptrapd control (yes means start daemon). As of net-snmp version # 5.0, master agentx support must be enabled in snmpd before snmptrapd # can be run. See snmpd.conf(5) for how to do this. TRAPDRUN=no # snmptrapd options (use syslog). TRAPDOPTS='-Lsd -p /var/run/snmptrapd.pid' # create symlink on Debian legacy location to official RFC path SNMPDCOMPAT=yes
- Restart the SNMP service:
# /etc/init.d/snmpd restart
The SNMP is now configured.
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