如何手动配置Linux系统网络，centos

服务器有多个网卡，每个网卡都有自己配置文件

老版本 ： /etc/sysconfig/network-scripts/ifcfg-eth0    依次是eth1...

新版本：/etc/sysconfig/network-scripts/ifcfg-ens33    编号依次增长

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=6b117019-83af-4de8-b123-18a3b90e6831
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.126.149
NETMASEK=255.255.255.0
GATEWAY=192.168.126.2

只需修改以下

NAME=ens33
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.126.149
NETMASEK=255.255.255.0
GATEWAY=192.168.126.2

修改完成后重启网络，

/etc/init.d/network restart

通过ifconfig命令查看结果

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.126.149  netmask 255.255.255.0  broadcast 192.168.126.255
        inet6 fe80::6afc:729d:348f:5ea5  prefixlen 64  scopeid 0x20<link>
        inet6 fe80::9873:832d:7e80:48f8  prefixlen 64  scopeid 0x20<link>
        inet6 fe80::d66a:fbb0:ab3a:6e67  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:9b:1e:21  txqueuelen 1000  (Ethernet)
        RX packets 1595110  bytes 1919821646 (1.7 GiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 832846  bytes 952083770 (907.9 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 1000  (Local Loopback)
        RX packets 557384  bytes 203793707 (194.3 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 557384  bytes 203793707 (194.3 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0