問(wèn)題描述：

今天在docker搭建redis環(huán)境的時(shí)候，發(fā)現(xiàn)yum拉取不到資源，上不到網(wǎng)，報(bào)了如下錯(cuò)誤：

http://mirrors.aliyun.com/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyun.com'" Trying other mirror. http://mirrors.neusoft.edu.cn/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.neusoft.edu.cn'" Trying other mirror. http://mirrors.nwsuaf.edu.cn/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.nwsuaf.edu.cn'" Trying other mirror. http://mirrors.shu.edu.cn/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.shu.edu.cn'" Trying other mirror. http://mirrors.sohu.com/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.sohu.com'" Trying other mirror. http://mirrors.tuna.tsinghua.edu.cn/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.tuna.tsinghua.edu.cn'" Trying other mirror. http://mirrors.zju.edu.cn/centos/6.10/extras/x86_64/Packages/epel-release-6-8.noarch.rpm: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.zju.edu.cn'" Trying other mirror.

解決過(guò)程：

1、測(cè)試wget

wget http://mirrors.163.com/.help/CentOS6-Base-163.repo

結(jié)果報(bào)錯(cuò)

unknown host mirrors.163.com

2、測(cè)試ping

在容器內(nèi)部

ping www.baidu.com

結(jié)果還是失敗

ping: unknown host www.baidu.com

多開一個(gè)終端，進(jìn)入主機(jī)（不是進(jìn)入容器），進(jìn)行ping命令測(cè)試發(fā)現(xiàn)是OK的，基本可以確定是docker的問(wèn)題了，而不是網(wǎng)絡(luò)問(wèn)題。

解決方法：

停止所有容器，重啟docker即可。

service docker restart

完成！

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