Instalasi dan Konfigurasi SNMP Server dan MRTG di Linux
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1. Penulis menggunakan Distro CenTos 3.4

2. Paket yang dibutuhkan:
	[root@dell root]# rpm -qa | grep snmp
	net-snmp-5.0.9-2.30E.12
	net-snmp-utils-5.0.9-2.30E.12
	net-snmp-devel-5.0.9-2.30E.12
	net-snmp-libs-5.0.9-2.30E.12
	net-snmp-perl-5.0.9-2.30E.12

3. Backup file snmp.conf:
	[root@dell root]# cp /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.bak

4. Isi dari file snmp.conf:
   	com2sec public default public
	group public v1 public
	group public v2c public
	group public usm public
	view all included .1
	access public "" any noauth exact all none none

5. Jalankan SNMP:
	[root@dell root]# /etc/rc.d/init.d/snmpd start

6. Cek service SNMP:
	[root@dell root]# ps ax | grep snmp
	24433 ?        S      0:00 /usr/sbin/snmpd -s -l /dev/null -P /var/run/snmpd -a
	24437 pts/0    S      0:00 grep snmp

7. Cek port SNMP:
	[root@dell root]# netstat -pln | grep snmp
	tcp 0  0 0.0.0.0:199  0.0.0.0:*  LIST  EN  24433/snmpd
	udp 0  0 0.0.0.0:161  0.0.0.0:*  24433/snmpd

8. Aktifkan Web Server Apache (Penulis mengguanakan apache versi 2):
	[root@dell root]# /usr/local/apache2/bin/apachectl start

9. Buat direktori mrtg pada direktori root apache:
	[root@dell root]# mkdir /usr/local/apache2/htdocs/mrtg

10.Pastikan terdapat paket mrtg pada linux box anda:
	[root@dell root]# rpm -qa | grep mrtg
	mrtg-2.9.29-4.ent

11.Membuat cfgmaker:
   (misal: snmp server diinstal pada pc dengan IP address 192.168.100.218)

	[root@dell snmp]# cfgmaker --global "WorkDir: /usr/local/apache2/htdocs/mrtg" --
	global "Options[_]:growright,bits" public@192.168.100.218 > /etc/mrtg/192.168.10
	0.218.cfg
	--base: Get Device Info on public@192.168.100.218:
	--base: Vendor Id:
	--base: Populating confcache
	--snpo: confcache public@192.168.100.218: Descr lo --> 1
	--snpo: confcache public@192.168.100.218: Descr eth0 --> 2
	--snpo: confcache public@192.168.100.218: Ip 127.0.0.1 --> 1
	--snpo: confcache public@192.168.100.218: Ip 192.168.100.218 --> 2
	--snpo: confcache public@192.168.100.218: Type 24 --> 1
	--snpo: confcache public@192.168.100.218: Type 6 --> 2
	--snpo: confcache public@192.168.100.218: Eth  --> 1
	--snpo: confcache public@192.168.100.218: Eth 00-12-3f-2e-83-b0 --> 2
	--base: Get Interface Info
	--base: Walking ifIndex
	--base: Walking ifType
	--base: Walking ifAdminStatus
	--base: Walking ifOperStatus
	--base: Walking ifSpeed

12.Edit file 192.168.100.218.cfg:
	[root@dell root]# vi /etc/mrtg/192.168.100.218.cfg

	# tambahkan baris berikut 
	#  for UNIX
	# WorkDir: /home/http/mrtg
	WorkDir: /usr/local/apache2/htdocs/mrtg

	# dan tambahkan baris berikut:
	RunAsDaemon:Yes
	Interval:5
	Refresh:300

13.Jalankan mrtg pda file 192.168.100.218.cfg
	[root@dell snmp]# env LANG=C mrtg /etc/mrtg/192.168.100.218.cfg
	Rateup WARNING: /usr/bin/rateup could not read the primary log file for 192.168.
	100.218_2
	Rateup WARNING: /usr/bin/rateup The backup log file for 192.168.100.218_2 was in
	valid as well
	Rateup WARNING: /usr/bin/rateup Can't remove 192.168.100.218_2.old updating log
	file
	Rateup WARNING: /usr/bin/rateup Can't rename 192.168.100.218_2.log to 192.168.10
	0.218_2.old updating log file

14.Disini SNMP server dan MRTG diinstal pada mesin yang sama, sehingga untuk melihat
   hasil mrtg pada server tersebut , buka browser dan ketik alamat berikut:
   	http://192.168.100.218/mrtg/

15.Buat schedule dengan crontab , menjalankan mrtg tiap 5 menit
 	[root@dell root]# crontab -e
 	*/5 * * * *  /usr/bin/mrtg /etc/mrtg/192.168.100.218.cfg --logging=/var/log/server1.log



java_ux
I still write :D