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linux下搭建HA高可用集群

HA 即（high available）高可用，又被叫做双机热备，用于关键性业务。简单理解就是，有两台机器A和B，正常是A提供服务，B待命闲置，当A宕机或服务宕掉，会切换至B机器继续提供服务。常用实现高可用的开源软件有heartbeat和keepalived，其中keepalived有负载均衡的...

Linux之HA高可用集群的基础概念总结

HA（High Availability）高可用集群，其特点为根据实际需求为前端Diretor,后端RS-server，数据库服务器，共享存储等集群节点做一个从备份服务器或者多个服务器互相备份，一旦主服务器挂掉，备份服务器能立马检测到并取代主服务器上的资源继续运行服务，从而最大限度避免了因服务器宕机...

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