​一、系统优化(三个节点全部操作)关闭防火墙systemctlstopfirewalldsystemctldisablefirewalld关闭selinuxecho"SELINUX=disabled">/etc/selinux/configecho"SELINUXTYPE=targeted">>/etc/selinux/configcat/etc/selinux/configsetenforce0设置