CentOS

2021 CentOS 6.8 install MySQL 5.6

Since CentOS officially abandoned the maintenance and update of CentOS 6.x and removed all the updates and packages, we need to use Alibaba Cloud Source to install

【Docker + Selinux】 Can't Open / Permission denied

The main solution is how to configure `docker` security in the environment where `selinux` is turned on, as well as common error solutions. It is not blindly `chmod -R 777`,`--privileged=true`,`setenforce 0` , But focus on using the `selinux` security strategy

Linux system DNS error resolution

CentOS, Euleros series operating systems: ping the public network domain name fails, prompting Name or service not known, but you can ping the elastic public network IP, CURL is the same