centos7 杂记

yum 源

https://www.cnblogs.com/renpingsheng/p/7845096.html

安装nginx php mysql

https://www.cnblogs.com/flywind/p/6019631.html

centos7 默认只开启22端口，自带iptables、firewalld两个过滤

systemctl stop firewalld

只下载不安装

yum install --downloadonly --downloaddir=  
# 示例如下
yum install --downloadonly --downloaddir=/root/mypackages/ httpd