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BruceOuyang / issuelist

用于记录日常碰到的各种问题和经验总结 （请看Issues）
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centos 7+ DNS 设置 #90

Open BruceOuyang opened 2 years ago

BruceOuyang commented 2 years ago

1.查看网卡配置，得到当前网卡信息

ifconfig

输出示例：

[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.7.208  netmask 255.255.255.0  broadcast 10.0.7.255
        inet6 fe80::6eaa:1e92:aacd:d00c  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2f:b8:1b  txqueuelen 1000  (Ethernet)
        RX packets 31624078  bytes 4394354067 (4.0 GiB)
        RX errors 0  dropped 59  overruns 0  frame 0
        TX packets 4481080  bytes 892156908 (850.8 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 381736  bytes 601364208 (573.5 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 381736  bytes 601364208 (573.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

示例中的 ens33 即为当前网卡

2.设置 ens33 网卡的 dns

vim /etc/sysconfig/network-script/ifcfg-ens33

找到并修改 DNS1 ，没有就在最后添加

DNS1=8.8.8.8
DNS2=8.8.4.4

8.8.8.8 #google dns服务器, 根据实际情况更换 8.8.4.4 #google dns服务器, 根据实际情况更换

3.重启网络

systemctl restart NetworkManager.service