ceph设计原理与实现(RGW、CephFS、实战)

1、侠义讲，对象存储就是云存储
2、分布式文件系统：CephFS
3、每天晚上10点到早上7点Scrub
ceph tell osd.* injectargs "--osd-scrub-begin-hour 22"
ceph tell osd.* injectargs "--osd-scrub-end-hour 7"
vi /etc/ceph/ceph.conf
[osd]
osd_scrub_begin_hour = 22
osd_scrub_end_hour = 7
4、ceph数据重建配置策略
//提升recovery的优先级，降低client的优先级
ceph tell osd.* injectargs "--osd-recovery-op-priority 63"
ceph tell osd.* injectargs "--osd-client-op-priority 3"
//等recovery完成，
ceph tell osd.* injectargs "--osd-recovery-op-priority 3"
ceph tell osd.* injectargs "--osd-client-op-priority 63"
//永久性修改优先级 /etc/ceph/ceph.conf

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5、禁止数据重建和迁移、开启数据重建和迁移
ceph osd set norebalance
ceph osd set norecovery
ceph osd set nobackfill
////启用
ceph osd unset norebalance
ceph osd unset norecovery
ceph osd unset nobackfill
6、查看、管理full和near_full告警
查询：ceph --admin-daemon /run/ceph/ceph-mon.yourmonip.asok config show|grep full_ratio
ceph --admin-daemon /run/ceph/ceph-osd.yourosdip.asok config show|grep full
//遇见full，后处理
ceph osd pause
ceph tell mon.* injectargs "--mon-osd-full-ratio 0.96"
ceph tell osd.* injectargs "--mon-osd-full-ratio 0.96"
ceph pg set_full_ratio 0.96
ceph osd unpause
7、增量备份
rdb export rdb/test_img Time1_Data_img

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8、查找image被多少客户端连接，将这些客户端加入黑名单
rdb status test_img
rdb info test_img
rdb image test_img
rados listwatchers -p rdb rdb_header.xxxx watcher=xx client.xxx cookie=xxx
ceph osd blacklist add xxx blacklisting xx until xx

9、ceph对接openstack

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