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1  Ceph基础介绍 Ceph是一个可靠地.自动重均衡.自动恢复的分布式存储系统,根据场景划分可以将Ceph分为三大块,分别是对象存储.块设备存储和文件系统服务.在虚拟化领域里,比较常用到的是Ceph的块设备存储,比如在OpenStack项目里,Ceph的块设备存储可以对接OpenStack的cinder后端存储.Glance的镜像存储和虚拟机的数据存储,比较直观的是Ceph集群可以提供一个raw格式的块存储来作为虚拟机实例的硬盘. Ceph相比其它存储的优势点在于它不单单是存储,同时还充分利…