keepalived ,lvs，tomcat 高可用，高并发，高性能 应用架构的搭建
keepalived ,lvs 搭建在同一台服务器上，两个tomcat 分别在一个tomcat上
四台服务器版本 ： centos 6.5
yum install ipvsadm -y
keepalived : etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs { notification_email { root@localhost } notification_email_from Alexandre.Cassen@firewall.loc smtp_server 192.168.184.178 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.184.222/24 dev eth0 label eth0:A } } virtual_server 192.168.184.222 80 { delay_loop 6 lb_algo wrr lb_kind DR nat_mask 255.255.255.0 persistence_timeout 50 protocol TCP real_server 192.168.184.188 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 192.168.184.168 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 2 } } }=================
! Configuration File for keepalived
global_defs { notification_email { root@localhost } notification_email_from Alexandre.Cassen@firewall.loc smtp_server 192.168.184.178 smtp_connect_timeout 30 router_id LVS_DEVEL } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 10 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.184.222/24 dev eth0 label eth0:A } } virtual_server 192.168.184.222 80 { delay_loop 6 lb_algo wrr lb_kind DR nat_mask 255.255.255.0 persistence_timeout 50 protocol TCP real_server 192.168.184.188 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } real_server 192.168.184.168 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 2 } } }========================
tomcat 服务器上需要配置 在设备上配置lo:A IP地址