今天在docker搭建redis環境的時候，發現yum拉取不到資源，上不到網，報了如下錯誤：

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.

測試wget

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

結果報錯

unknown host mirrors.163.com

測試ping

在容器內部

ping www.baidu.com

結果還是失敗

ping: unknown host www.baidu.com

多開一個終端，進入主機（不是進入容器），進行ping命令測試發現是OK的，基本可以確定是docker的問題了，而不是網絡問題

解決方法

停止所有容器，重啟docker

service docker restart

內容擴展

Docker容器內不能聯網的6種解決方案

1.使用–net:host選項

2.使用–dns選項

3.改dns server

4.不用dnsmasq

5.重建docker0網絡

6.直接在docker內修改/etc/hosts

以上就是解決docker容器無法ping外網的問題的詳細內容，更多關于docker容器無法ping外網的資料請關注腳本之家其它相關文章！