Centos 换源，停用fastestmirror插件 1.首先备份原来的cent os官方yum源cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak2.获取阿里的yum源覆盖本地官方yum源wget http://mirrors.aliyun.com/repo/Centos-7.repo 3.清理旧包yum clean all 4.重新生成缓存yum makecache 停用fastestmirror插件 vi /etc/yum/pluginconf.d/fastestmirror.conf修改内容 enabled = 1//由1改为0

Python3 一键安装脚本 yum -y install wget && yum -y groupinstall "Development tools" && yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel && wget https://www.python.org/ftp/python/3.5.5/Python-3.5.5.tar.xz && mkdir /usr/local/python3 && tar -xvJf Python-3.5.5.tar.xz && cd Python-3.5.5 && ./configure --prefix=/usr/local/python3 && make && make install && ln -s /usr/local/python3/bin/python3 /usr/bin/python3 && ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3 && sudo yum -y install epel-release && sudo yum -y install python-pip