Linux集群之HA(高可用集群)篇

LVS+Keepalive网络结构：

1、搭建LVS DR模式，见上一篇文章Linux集群之LB(负载均衡集群)篇
2、高可用搭建
使用Keepalived实现高可用
主副节点Keepalived设置
vi /etc/keepalived/keepalived.conf

! Configuration File for keepalivedglobal_defs {   router_id R1   }vrrp_instance VI_1 {    # 副节点 SLAVE    state MASTER    interface ens37    virtual_router_id 66    # 副节点稍微降低，建议30    priority 80    advert_int 1    authentication { auth_type PASS auth_pass 1111    }    virtual_ipaddress { 120.10.10.100    }}virtual_server 120.10.10.100 80 {    delay_loop 1    lb_algo rr    lb_kind DR    persistence_timeout 50    protocol TCP    real_server 120.10.10.12 80 { weight 1 TCP_CHECK{   connect_port 80   connect_timeout 3   nb_get_retry 3   delay_before_retry 4 }    }    real_server 120.10.10.13 80 { weight 1 TCP_CHECK{   connect_port 80   connect_timeout 3   nb_get_retry 3   delay_before_retry 4 }    }}

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