本文所需环境 tomcat + nginx + keepalived 。关于tomcat和nginx请自行学习。 一.主节点:修改keepalived.conf 的内容（keepalived的配置文件默认放在/etc/keeplived下，安装的时候启动不了，后来手动创建了keeplived和keepalived.conf文件，才启动成功。）内容如下：global_defs {notification_email {977921087@qq.com}notification_email_from sns-lvs@gmail.comsmtp_server smtp.hysec.comsmtp_connection_timeout 30router_id...