CentOS7에서 Configuration 파일 내용을 수정하여 고정 IP 설정하는 방법
현재 IP주소 확인
[root@localhost ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.45.128 netmask 255.255.255.0 broadcast 192.168.45.255
inet6 fe80::20c:29ff:feb1:9ef1 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b1:9e:f1 txqueuelen 1000 (Ethernet)
RX packets 815582 bytes 1221337871 (1.1 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 126557 bytes 7832725 (7.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 4 bytes 340 (340.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4 bytes 340 (340.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:39:f8:cf txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Configuration 파일 수정
[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eno16777736
TYPE=Ethernet
# Change BOOTPROTO dhcp to static
# BOOTPROTO=dhcp
BOOTPROTO=static
DEFROUTE=yes
# Set IPv4 address
IPADDR=192.168.45.3
# Set IPv4 Netmask
NETMASK=255.255.255.0
# Set IPv4 Gateway address
GATEWAY=192.168.45.2
# Set IPv4 DNS address
DNS1=192.168.45.2
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=eno16777736
UUID=17f6c4a3-91df-415f-8df3-7c7f2ef899ce
DEVICE=eno16777736
ONBOOT=yes
PEERDNS=yes
PEERROUTES=yes
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
네트워크 서비스 재시작
[root@localhost network-scripts]# systemctl restart network
변경된 IP주소 확인
[root@localhost network-scripts]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.45.3 netmask 255.255.255.0 broadcast 192.168.45.255
inet6 fe80::20c:29ff:feb1:9ef1 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b1:9e:f1 txqueuelen 1000 (Ethernet)
RX packets 815675 bytes 1221347556 (1.1 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 126630 bytes 7840405 (7.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 16 bytes 1368 (1.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 1368 (1.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:39:f8:cf txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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