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在 CentOS 中从命令行设置静态IP。

首先找一下需要静态IP的网卡是哪个,比如我这里需要静态的网卡是ens33

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[root@itp-A network-scripts]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.16.138.129 netmask 255.255.255.0 broadcast 172.16.138.255
inet6 ----::----:----:----:---- prefixlen 64 scopeid 0x20<link>
ether 00:00:00:00:00:00 txqueuelen 1000 (Ethernet)
RX packets 24406 bytes 34264994 (32.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10661 bytes 746079 (728.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

切换到这个文件夹

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cd  /etc/sysconfig/network-scripts/

可见该文件下有如下文件:

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[root@itp-A network-scripts]# ll -a
total 240
drwxr-xr-x. 2 root root 4096 Sep 18 23:45 .
drwxr-xr-x. 6 root root 4096 Sep 18 23:46 ..
-rw-r--r--. 1 root root 310 Sep 18 23:34 ifcfg-ens33
-rw-r--r--. 1 root root 254 May 22 2020 ifcfg-lo
lrwxrwxrwx. 1 root root 24 Sep 18 23:45 ifdown -> ../../../usr/sbin/ifdown
-rwxr-xr-x. 1 root root 654 May 22 2020 ifdown-bnep
-rwxr-xr-x. 1 root root 6532 May 22 2020 ifdown-eth
-rwxr-xr-x. 1 root root 781 May 22 2020 ifdown-ippp
-rwxr-xr-x. 1 root root 4540 May 22 2020 ifdown-ipv6
lrwxrwxrwx. 1 root root 11 Sep 18 23:45 ifdown-isdn -> ifdown-ippp
-rwxr-xr-x. 1 root root 2130 May 22 2020 ifdown-post
-rwxr-xr-x. 1 root root 1068 May 22 2020 ifdown-ppp
-rwxr-xr-x. 1 root root 870 May 22 2020 ifdown-routes
-rwxr-xr-x. 1 root root 1456 May 22 2020 ifdown-sit
-rwxr-xr-x. 1 root root 1621 Dec 9 2018 ifdown-Team
-rwxr-xr-x. 1 root root 1556 Dec 9 2018 ifdown-TeamPort
-rwxr-xr-x. 1 root root 1462 May 22 2020 ifdown-tunnel
lrwxrwxrwx. 1 root root 22 Sep 18 23:45 ifup -> ../../../usr/sbin/ifup
-rwxr-xr-x. 1 root root 12415 May 22 2020 ifup-aliases
-rwxr-xr-x. 1 root root 910 May 22 2020 ifup-bnep
-rwxr-xr-x. 1 root root 13758 May 22 2020 ifup-eth
-rwxr-xr-x. 1 root root 12075 May 22 2020 ifup-ippp
-rwxr-xr-x. 1 root root 11893 May 22 2020 ifup-ipv6
lrwxrwxrwx. 1 root root 9 Sep 18 23:45 ifup-isdn -> ifup-ippp
-rwxr-xr-x. 1 root root 650 May 22 2020 ifup-plip
-rwxr-xr-x. 1 root root 1064 May 22 2020 ifup-plusb
-rwxr-xr-x. 1 root root 4997 May 22 2020 ifup-post
-rwxr-xr-x. 1 root root 4154 May 22 2020 ifup-ppp
-rwxr-xr-x. 1 root root 2001 May 22 2020 ifup-routes
-rwxr-xr-x. 1 root root 3303 May 22 2020 ifup-sit
-rwxr-xr-x. 1 root root 1755 Dec 9 2018 ifup-Team
-rwxr-xr-x. 1 root root 1876 Dec 9 2018 ifup-TeamPort
-rwxr-xr-x. 1 root root 2780 May 22 2020 ifup-tunnel
-rwxr-xr-x. 1 root root 1836 May 22 2020 ifup-wireless
-rwxr-xr-x. 1 root root 5419 May 22 2020 init.ipv6-global
-rw-r--r--. 1 root root 20678 May 22 2020 network-functions
-rw-r--r--. 1 root root 30988 May 22 2020 network-functions-ipv6

在其中找到ifcfg-+你的网卡名的文件,打开该文件

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TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
# BOOTPROTO参数指定IP设置方式
# 改为static即为静态IP
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="30c7f540-670d-4074-b1db-9789682f4adc"
DEVICE="ens33"
ONBOOT="yes"

同时在文件最下方加入

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IPADDR=192.168.10.10 #静态IP  
GATEWAY=192.168.10.1 #默认网关
NETMASK=255.255.255.0 #子网掩码
DNS1=192.168.10.1 #DNS 配置

最后重启网卡即可。

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systemctl restart network

 简单说两句



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