ContOS 7 修改IP地址

自动获取IP地址

[root@localhost ~]# dhclient
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查看IP地址

[root@localhost ~]# ip addr
1: lo:  mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33:  mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:fe:ef:0f brd ff:ff:ff:ff:ff:ff
    inet 192.168.29.128/24 brd 192.168.29.255 scope global noprefixroute ens33     //192.168.29.138属于自动获取到的IP地址
       valid_lft forever preferred_lft forever
    inet6 fe80::b731:8219:5f1f:a11/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
[root@localhost ~]# 
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vi编辑配置文件

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33 
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编辑配置文件

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static     //静态填static、动态填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=88fa6506-0ee8-48c0-adf1-1b8b8392cc62
DEVICE=ens33
ONBOOT=yes     //系统启动时是否激活网卡
IPADDR=192.168.29.128     //IP地址
NETMASK=255.255.255.0     //子网掩码
GATEWAY=192.168.29.2     //网关
DNS1=119.29.29.29     //DNS                  
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刷新网络配置

[root@localhost ~]# systemctl restart network.service
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查看IP地址

[root@localhost ~]# ifconfig
ens33: flags=4163  mtu 1500
        inet 192.168.29.128  netmask 255.255.255.0  broadcast 192.168.29.255
        inet6 fe80::b731:8219:5f1f:a11  prefixlen 64  scopeid 0x20
        ether 00:0c:29:fe:ef:0f  txqueuelen 1000  (Ethernet)
        RX packets 1274  bytes 129949 (126.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1167  bytes 154006 (150.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 32  bytes 2592 (2.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 32  bytes 2592 (2.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
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