文章 44
评论 0
浏览 14952
keepalived服务

keepalived服务

一、keepalived介绍 LB(Load Balance) #负载均衡 #lvs/HAProxy/nginx(http/upstream, stream/upstream ) HA(High Availability) #高可用集群,数据库、Zookeeper、Redis SPoF: Single Point of Failure,解决单点故障 HPC #高性能集群(High Performance Computing) https://www.top500.org 系统可用性:SLA(Service-Level 95%=(60*24*30)*(1-0.9995) (指标)=99.9%, ..., 99.999%,99.9999% 提升系统高用性的解决方案之降低MTTR- Mean Time To Repair(平均故障时间) 解决方案:建立冗余机制 active/passive 主/备 active/active 双主 active --> HEARTBEAT --> passive active <--> HEARTBEAT <--> ....

生而为人