우분투 mrtg 용 snmp 설정 방법

우선 몇몇 패키지의 설치가 필요 하다 

#sudo apt-get install snmp-mibs-downloader snmp snmpd

설치 완료 후 

/etc/snmp

폴더 안에 

snmp.conf 파일 을 수정 한다 .

# As the snmp packages come without MIB files due to license reasons, loading

# of MIBs is disabled by default. If you added the MIBs you can reenable

# loading them by commenting out the following line.

#mibs :             -->  이부분 주석 처리 

그 후 snmpd.conf 파일 수정

-----------------------------------------------------------------------------------------------

#  Listen for connections from the local system only

#agentAddress  udp:161,udp6:[::1]:161

#  Listen for connections on all interfaces (both IPv4 *and* IPv6)

agentAddress udp:161,udp6:[::1]:161 --> 이 부분 주석 해제

###############################################################################

#

#  SNMPv3 AUTHENTICATION

#

#  Note that these particular settings don't actually belong here.

#  They should be copied to the file /var/lib/snmp/snmpd.conf

#     and the passwords changed, before being uncommented in that file *only*.

#  Then restart the agent

#  createUser authOnlyUser  MD5 "remember to change this password"

#  createUser authPrivUser  SHA "remember to change this one too"  DES

#  createUser internalUser  MD5 "this is only ever used internally, but still change the password"

#  If you also change the usernames (which might be sensible),

#  then remember to update the other occurances in this example config file to match.

###############################################################################

#

#  ACCESS CONTROL

#

                                                 #  system + hrSystem groups only

view   systemonly  included   .1.3.6.1.2.1.1

view   systemonly  included   .1.3.6.1.2.1.25.1

                                                 #  Full access from the local host

rocommunity public  localhost

                                                 #  Default access to basic system info

#rocommunity public  default    -V systemonly

rocommunity public  [허용할 IP ]

여기서 public 는 아이디 역할을 한다. 

그 후 

허용 할 IP 에 적어준 서버에 들어가서 확인 해보면 

#snmpwalk -v1 -c public [snmp 설정한 서버 IP] ifEntry

여기서 public 는 snmp 설정 한 서버의 snmpd.conf 파일에서 ID 라고 말한 그것을 적어 주면 된다.