CentOS 7 默认的haproxy版本是1.5.这里介绍如何使用yum安装haproxy1.8

安装 Software Collections (SCL) repository 源https://www.softwarecollections.org/en/以获取最新版本的haproxy

sudo yum install centos-release-scl -y

安装haproxy

sudo yum install rh-haproxy18-haproxy rh-haproxy18-haproxy-syspaths -y

OK,现在你可以开始使用了：

开启：systemctl start rh-haproxy18-haproxy

停止：systemctl stop rh-haproxy18-haproxy

开机启动： systemctl enable rhhaproxy18-haproxy