Couldn't resolve host或者Name or service not known

阿新 • • 發佈：2019-01-12

先入為主-所解決問題

此問題可能出現在：

1.yum 命令安裝或其他會上網的操作時

2.ping 域名時

3.含有解析域名的其它操作

問題重現

1.yum安裝時報錯：Errno 14 Couldn't resolve host

因為使用的yum源是163的，但是報錯，解析不了域名。

2.ping www.baidu.com時

看錯誤提示可知域名服務未知，也可理解為不能解析域名。檢視配置：cat /etc/resolv.conf

啥都沒有。

/etc/resolv.conf檔案中

解決

在/etc/resolv.conf中加入一行

nameserver 8.8.8.8

即可解決

也有朋友說：

CentOS 7下不直接修改/etc/resolv.conf，使用systemctl restart NetworkManager命令，會根據/etc/sysconfig/network-scripts/ifcfg-eth0自動生成etc/resolv.conf

這個對於我就行不通，首先因為我的/etc/sysconfig/network-scripts/ifcfg-eth0不存在，因為我的網絡卡配置檔案在ifcfg-ens33中，並且使用systemctl restart NetworkManager命令是根據ifcfg-ens33配置檔案中的配置進行生成的，所以沒有配置好的，或者說此方法行不通的可以直接在/etc/resolv.conf中新增。

Couldn't resolve host或者Name or service not known

先入為主-所解決問題此問題可能出現在： 1.yum 命令安裝或其他會上網的操作時 2.ping 域名時 3.含有解析域名的其它操作問題重現 1.yum安裝時報錯：Errno 14 Couldn't resolve host 因為使用的yum源是163的，但是報錯，解

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Couldn't resolve host或者Name or service not known

先入為主-所解決問題

問題重現

解決

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Couldn't resolve host或者Name or service not known

先入為主-所解決問題

問題重現

解決

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