更换yum仓库
rm -rf /etc/yum.repos.d/* curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo cat >> nginx.repo <<OK [nginx-stable] name=nginx stable repo baseurl=http://nginx.org/packages/centos/\$releasever/\$basearch/ gpgcheck=1 enabled=1 gpgkey=https://nginx.org/keys/nginx_signing.key module_hotfixes=true [nginx-mainline] name=nginx mainline repo baseurl=http://nginx.org/packages/mainline/centos/\$releasever/\$basearch/ gpgcheck=1 enabled=0 gpgkey=https://nginx.org/keys/nginx_signing.key module_hotfixes=true OK mv ./nginx.repo /etc/yum.repos.d yum clean all yum makecache clear yum -y install wget bash-com* lsof net-tools ntp psmisc lrzsz