서버 IP Address 바꾸기

IP Address 관련파일
          /etc/sysconfig/network
          /etc/sysconfig/network-scripts/ifcfg-etho

IP Address 관련 명령어
         ifconfig
         netsats, route

[root@urban root]# [root@urban root]# ifconfig -a eth0      Link encap:Ethernet  HWaddr 00:00:B4:9D:C3:6B             inet addr:155.230.174.51  Bcast:155.230.175.255  Mask:255.255.252.0           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           RX packets:1219440 errors:0 dropped:0 overruns:0 frame:3           TX packets:186521 errors:3 dropped:0 overruns:0 carrier:3           collisions:12816 txqueuelen:100           RX bytes:256018832 (244.1 Mb)  TX bytes:112029458 (106.8 Mb)           Interrupt:9 Base address:0xd800 lo        Link encap:Local Loopback             inet addr:127.0.0.1  Mask:255.0.0.0           UP LOOPBACK RUNNING  MTU:16436  Metric:1           RX packets:101 errors:0 dropped:0 overruns:0 frame:0           TX packets:101 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:0           RX bytes:7760 (7.5 Kb)  TX bytes:7760 (7.5 Kb) [root@urban root]# [root@urban root]#

netsta라는 명령어로 네트웍관련 설정을 확인한다.

[root@urban root]# [root@urban root]# netstat -nr Kernel IP routing table Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface 155.230.172.0   0.0.0.0         255.255.252.0   U        40 0          0 eth0 127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          0 lo 0.0.0.0         155.230.172.5   0.0.0.0         UG       40 0          0 eth0 [root@urban root]# [root@urban root]#

/etc/sysconfig/network 파일을 수정한다.

[root@urban root]# [root@urban root]# cd /etc/sysconfig [root@urban sysconfig]# vi network NETWORKING=yes HOSTNAME=urban.knu.ac.kr GATEWAY=155.230.172.5 ~ ~ ~ ~

도메인명을 변경한다.
공대 2호관 내일 경우는 같은 gateway를 사용하게 되므로 gateway는 변경할 필요가 없다.

장치파일 변경하기.
/etc/sysconfig/network-scripts/ifcfg-eth0

[root@urban sysconfig]# [root@urban sysconfig]# cd /etc/sysconfig/network-scripts/ [root@urban network-scripts]# vi ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static BROADCAST=155.230.175.255 IPADDR=155.230.174.51 NETMASK=255.255.252.0 NETWORK=155.230.172.0 ONBOOT=yes GATEWAY=155.230.172.5 TYPE=Ethernet USERCTL=no PEERDNS=no ~ ~

IPADDR 항목을 변경한다.

변경이 끝났으면 변경사항을 적용한다.
/etc/rc.d/init.d/network restart

[root@urban root]# [root@urban root]# /etc/rc.d/init.d/network restart Shut down interface eth0:                                     [   OK   ] Setting network parameters:                                   [   OK   ] Bringing up interface lo:                                     [   OK   ] Bringing up interface etho0:                                  [   OK   ] [root@urban root]# [root@urban root]#

끝.