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存储/ceph/p版本安装/11-部署MDS元数据服务.md
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MDS守护进程用于Cephfs(文件系统),MDS采用的是主备模式,即cephfs仅使用1个活跃的MDS守护进程,配置MDS服务有多种方法,此处介绍2种,大同小异。
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> 先创建CephFS,然后使用placement部署MDS
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```shell
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## 1. 先创建CephFS池
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# ceph osd pool create cephfs_data 128 128
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# ceph osd pool create cephfs_metadata 64 64
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## 2. 为数据池和元数据池创建文件系统
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# ceph fs new cephfs cephfs_metadata cephfs_data
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new fs with metadata pool 5 and data pool 4
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## 3. 使用ceph orch apply 命令部署MDS服务
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# ceph orch apply mds cephfs --placement="3 ceph01 ceph02 ceph03"
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Scheduled mds.cephfs update...
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## 最后查看状态
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# ceph fs ls
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name: cephfs, metadata pool: cephfs_metadata, data pools: [cephfs_data ]
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# ceph fs status
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# ceph orch ps --daemon_type=mds
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# ceph -s
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## 列出服务
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# ceph orch ls
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```
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