基于 Nginx Tomcat Redis 负载均衡 Session 共享来实现后续的功能 （https://my.oschina.net/xshuai/blog/916122） 一张简单的图说下大概的意思
使用的版本为keepalived-1.2.24.tar.gz 为了方便安装，在系统里面提前下载好相关的库 yum -y install libnl libnl-devel yum install -y libnfnetlink-devel 然后就开始解压编译安装吧 tar -zxvf keepalived-1.2.24.tar.gz cd keepalived-1.2.24.tar.gz ./configure --prefix=/usr/local/keepalived make make install 然后继续配置Keepalived mkdir /etc/keepalived cp /usr/local/keepalived/etc/keepalived.conf /etc/keepalived/keepalived.conf cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/keepalived cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/keepalived 添加到开机自启 chkconfig keepalived on 如果提示keepalived: command not found 解决方法如下 ln -s /usr/local/keepalived/sbin/keepalived /sbin/ 如果遇权限不足 执行以下命令 chmod 755 /etc/init.d/keepalived 相关操作 service keepalived start #启动服务 service keepalived stop #停止服务 service keepalived restart #重启服务 请不要着急去启动Keepalived
引用于 http://blog.csdn.net/xyang81/article/details/52554398 keepalived服务安装完成之后，后面的主要工作就是在keepalived.conf文件中配置HA和负载均衡。 一个功能比较完整的常用的keepalived配置文件，主要包含三块： 全局定义块、VRRP实例定义块和虚拟服务器定义块。 全局定义块是必须的，如果keepalived只用来做ha， 虚拟服务器是可选的。下面是一个功能比较完整的配置文件模板： #全局定义块 global_defs { # 邮件通知配置 notification_email { email1 email2 } notification_email_from email smtp_server host smtp_connect_timeout num lvs_id string router_id string ## 标识本节点的字条串,通常为hostname } #VRRP 实例定义块 vrrp_sync_group string { group { string string } } vrrp_instance string { state MASTER|BACKUP virtual_router_id num inte**ce string mcast_src_ip @IP priority num advert_int num nopreempt smtp_alert lvs_sync_daemon_inte**ce string authentication { auth_type PASS|AH auth_pass string } virtual_ipaddress { # Block limited to 20 IP addresses @IP @IP @IP } } #虚拟服务器定义块 virtual_server (@IP PORT)|(fwmark num) { delay_loop num lb_algo rr|wrr|lc|wlc|sh|dh|lblc lb_kind NAT|DR|TUN persistence_timeout num protocol TCP|UDP real_server @IP PORT { weight num notify_down /path/script.sh TCP_CHECK { connect_port num connect_timeout num } } real_server @IP PORT { weight num MISC_CHECK { misc_path /path_to_script/script.sh(or misc_path “/path_to_script/script.sh |
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