给linux系统设置ip

编写/etc/sysconfig/network-scripts/下的ifcfg-打头的文件，具体不同系统显示的不一样。

把ONBOOT=no改成ONBOOT=yes

然后重启网络服务
执行 service network restart命令

使用ifconfig命令查看分配的ip地址。

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.254.129  netmask 255.255.255.0  broadcast 192.168.254.255
        inet6 fe80::85d7:2bd7:31be:24d1  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:fa:b4:89  txqueuelen 1000  (Ethernet)
        RX packets 1041  bytes 67354 (65.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 95  bytes 11255 (10.9 KiB)
        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 1  (Local Loopback)
        RX packets 512  bytes 44544 (43.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 512  bytes 44544 (43.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@localhost ~]#

上面这种是自动分配，因为默认BOOTPROTO=dhcp，从上面可以知道自动分配到了192.168.254.129的ip.

自定义IP的设置

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33 
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
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=7c523d95-f232-4f37-9752-35e0229d6afa
DEVICE=ens33
ONBOOT=yes

IPADDR=192.168.254.102
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
[root@localhost ~]#

修改的地方
1、把之前的BOOTPROTO=dhcp改成BOOTPROTO=none
2、把ONBOOT=no改成ONBOOT=yes
3、加上自定义ip，子网掩码，网关配置。

重启网卡服务
使用ifconfig命令验证

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.254.102  netmask 255.255.255.0  broadcast 192.168.254.255
        inet6 fe80::8ed:2773:e45f:4e50  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:d1:e4:86  txqueuelen 1000  (Ethernet)
        RX packets 263  bytes 20437 (19.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 99  bytes 12911 (12.6 KiB)
        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 1  (Local Loopback)
        RX packets 464  bytes 40384 (39.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 464  bytes 40384 (39.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@localhost ~]#

自定义IP的设置

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