本文记录 CentOS 7 如何配置静态 IP。
切换到 /etc/sysconfig/network-scripts
目录下,查看该目录下的文件,以太网卡配置文件一般是以 ifcfg-网卡名称
命名的文件,比如 ifcfg-eth0
、ifcfg-ens3
。
该文件默认内容如下:
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=eth0 UUID=cbff035e-b3d4-4c4c-80ee-36a2873e9536 DEVICE=eth0 ONBOOT=no
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修改该文件内容如下:
TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no - BOOTPROTO=dhcp + BOOTPROTO=static 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=eth0 UUID=cbff035e-b3d4-4c4c-80ee-36a2873e9536 DEVICE=eth0 - ONBOOT=no + ONBOOT=yes + IPADDR=133.133.135.33 + NETMASK=255.255.0.0 + GATEWAY=133.133.133.40 + DNS1=133.133.133.110 + DNS2=8.8.8.8
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然后重启网卡:
systemctl restart network
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注意: 配置文件的名称和配置文件内的 NAME
、DEVICE
字段保持一致,否则重启网卡可能失败,可以用 ip a
命令查看网卡名称:
$ip a 1: lo: <LOOPBACK,UP,LOWER_UP> 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: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 90:b1:1c:8c:c8:80 brd ff:ff:ff:ff:ff:ff inet 133.133.133.114/16 brd 133.133.255.255 scope global noprefixroute eno1 valid_lft forever preferred_lft forever inet6 fe80::ecf9:1f4e:3b04:2763/64 scope link noprefixroute valid_lft forever preferred_lft forever
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