kudu命令详解
课程链接： http://edu.51cto.com/course/15174.html
kudu tablet
-
kudu tablet leader_step_down
功能：强制使
的leader step down(即强制使现在的leader节点变为follower节点)
kudu tablet leader_step_down 10.110.18.102:7051,10.110.18.184:7051,10.110.18.185:7051 08c7def983394ff3ac64b5292dfb5dea
-
kudu tablet change_config add_replica
功能：为
在tablet server: 中添加一个备份，该备份类型为replica_type（VOTER/NON-VOTER:是否参加选举）
kudu tablet change_config add_replica 10.110.18.102:7051,10.110.18.184:7051,10.110.18.185:7051 08c7def983394ff3ac64b5292dfb5dea 1618d3a544e4463286ae91f78419f4c6
注意：经测试发现当类型为VOTER时，如果tablet备份为3，新增加一个备份后变为4，过一段时间（5分钟以后），会自动变为三份。 NON-VOTER有待在kudu1.5.0版本测试
-
kudu tablet change_config change_replica_type
功能：修改ts_uuid中tablet_id的类型（VOTER/NON-VOTER）
-
kudu tablet change_config move_replica
功能：将tablet_id从from_ts_uuid移动至to_ts_uuid
注意：kudu1.4.0不支持，kudu1.5.0版本开始支持，可负载均衡
-
kudu tablet change_config remove_replica
功能：将tablet_id的备份从ts_uuid删除
kudu tablet change_config remove_replica 10.110.18.102:7051,10.110.18.184:7051,10.110.18.185:7051 08c7def983394ff3ac64b5292dfb5dea 1f854d396f54483ea9e5e537b6b63503
注意：经测试发现当tablet个数等于或小于备份数时，删除指定tablet不成功。即想要迁移tablet可以先迁移到的目标机器上新增tablet 然后再删除源tablet
-
kudu tserver set_flag
[-force] 功能：设置指定flag
-
kudu tserver status
查看指定tserver_address的状态
-
kudu tserver timestamp
功能：获取tserver_address当前的时间戳
-
kudu tserver list
[-columns=] [-format=] [-timeout_ms=] 功能：获取集群中的tablet server
-
kudu wal dump [-print_entries=] [-noprint_meta] [-truncate_data=]
功能:显示指定path下的wal日志，path必须指定具体文件
kudu wal dump /data/kudu/tserver_data/wals/43c10f7d81144e3287a3f80aa0e0f684/wal-000000001
该操作会列数具体的wal内容，包括针对该tablet的具体操作
-
kudu table delete
功能：删除table_name表
-
kudu table list
[-list_tablets] 功能：列举所有表以及tablets
-
kudu remote_replica check
功能：检查tserver_address的状态
-
kudu remote_replica copy
[-force_copy]
kudu remote_replica copy bd556b05db4f4446b0223163223ffce6 10.110.18.185:7050 10.110.18.176:7050 -force_copy
验证失败，错误如下： W1101 10:22:27.238106 31485 tool_action_remote_replica.cc:333] NOTE: this copy may happen asynchronously and may timeout if the tablet size is large. Watch the logs on the target tablet server for indication of progress.
- kudu remote_replica delete
功能：删除指定tserver_address的 tablet_id
kudu remote_replica delete 10.110.18.184:7050 bd556b05db4f4446b0223163223ffce6 movetablet
-
kudu remote_replica dump
功能：获取指定tserver_address指定tablet_id中的数据
kudu remote_replica dump 10.110.18.184:7050 bd556b05db4f4446b0223163223ffce6
结果如下： (int64 RowID=9, int64 ID=1, string NAME="kudu-content-1") (int64 RowID=5, int64 ID=1, string NAME="kudu-content-1")
-
kudu master set_flag master_address flag value [-force]
功能：为master_address节点设置参数
-
kudu master status
功能：查看master_address信息
-
kudu master timestamp
功能：获取master_address的时间戳
-
kudu master list
[-columns=] [-format= ] [-timeout_ms=] 功能：列举集群的master信息
-
kudu local_replica copy_from_remote
[-fs_wal_dir= ] [-fs_data_dirs=] 功能：从source拷贝名为tablet_id到本地 [-fs_wal_dir=
] [-fs_data_dirs=]
kudu local_replica copy_from_remote 8a94ebf9a7ec487dbcde74a2937ffc72 10.110.18.185:7050 -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
测试出现异常,如下： I1102 09:29:36.918705 13489 fs_manager.cc:263] Time spent opening block manager: real 0.000s user 0.000s sys 0.000s IO error: Could not lock /data/kudu/tserver_data/data/block_manager_instance: Could not lock /data/kudu/tserver_data/data/block_manager_instance: lock /data/kudu/tserver_data/data/block_manager_instance: Resource temporarily unavailable (error 11)
- kudu local_replica data_size
[-fs_wal_dir= ] [-fs_data_dirs=] [-format=]
功能：获取 [-fs_wal_dir=] [-fs_data_dirs=]下的tablets
kudu local_replica data_size ea3dbfb02bf6411aae64b63247c2d7a9 -fs_wal_dir=/data/kudu/tserver_wal -fs_data_dirs=/data/kudu/tserver_data -format=json
-
kudu local_replica list [-fs_wal_dir=
] [-fs_data_dirs=] [-list_detail] 功能：获取 [-fs_wal_dir=
] [-fs_data_dirs=]下的tablets -
kudu local_replica cmeta print_replica_uuids
[-fs_wal_dir= ] [-fs_data_dirs=]
功能：获取[-fs_wal_dir=
-
kudu local_replica cmeta set_term
[-fs_wal_dir= ] [-fs_data_dirs=] -
kudu local_replica cmeta rewrite_raft_config
… [-fs_wal_dir= ] [-fs_data_dirs=] -
kudu local_replica dump block_ids
[-fs_wal_dir= ] [-fs_data_dirs=] 功能：获取[-fs_wal_dir=
] [-fs_data_dirs=]下 对应的Disk Rowset的block_id列表
kudu local_replica dump block_ids b7de17353521401b95576999a0e53b1c -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
-
kudu local_replica dump meta
[-fs_wal_dir= ] [-fs_data_dirs=] 功能：获取[-fs_wal_dir=
] [-fs_data_dirs=] 下 的元数据信息，包括各rowset的block id， column id等。
kudu local_replica dump meta b7de17353521401b95576999a0e53b1c -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
-
kudu local_replica dump rowset
功能：获取[-fs_wal_dir=
] [-fs_data_dirs=]中对应[-dump_data]的rowset的内容 信息
kudu local_replica dump block_ids b7de17353521401b95576999a0e53b1c -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
-
kudu local_replica dump wals
[-fs_wal_dir= ] [-fs_data_dirs=] [-print_entries=] [-noprint_meta] [-truncate_data=] 功能：获取[-fs_wal_dir=
] [-fs_data_dirs=]中的 的wal信息
kudu local_replica dump wals b7de17353521401b95576999a0e53b1c -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
-
kudu fs check [-fs_wal_dir=
] [-fs_data_dirs=] [-repair] **功能：检测[-fs_wal_dir=
] [-fs_data_dirs=]的文件系统，-repair为修复该fs的问题，需要修复时需要把对应的kudu-master或kudu-tserver stop，不然会出现：Could not lock ****: Resource temporarily unavailable (error 11)
kudu fs check -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
-
kudu fs format [-fs_wal_dir=
] [-fs_data_dirs=] [-uuid=] 功能：产生新文件系统[-fs_wal_dir=
] [-fs_data_dirs=]，可以指定-uuid=uuid，不指定会自动生成一个。 ``` [root@kudu-102 bin]# ./kudu fs format -fs_wal_dir=/data/kudu/ts_datas -fs_data_dirs=/data/kudu/ts_datas -uuid=b69cdeb85db14251afec1a952c1be9e9 I1103 02:24:16.666724 23882 env_posix.cc:1460] Not raising process file limit of 50000; it is already as high as it can go I1103 02:24:16.666936 23882 file_cache.cc:463] Constructed file cache lbm with capacity 20000 I1103 02:24:16.671298 23882 fs_manager.cc:377] Generated new instance metadata in path /data/kudu/ts_datas/instance: uuid: "b69cdeb85db14251afec1a952c1be9e9" format_stamp: "Formatted at 2017-11-03 02:24:16 on kudu-102" ```- 数据目录下必须为空的kudu文件系统，否则无法产生新分系统
-
kudu fs dump block
[-fs_wal_dir= ] [-fs_data_dirs=] 功能：输出[-fs_wal_dir=
] [-fs_data_dirs=]下 的二进制内容，不会对内容进行解析 - 该命令kudu1.4.0未支持，kudu1.5.0有待验证
-
kudu fs dump cfile
[-fs_wal_dir= ] [-fs_data_dirs=] [-noprint_meta] [-noprint_rows] 功能：输出
的cfile的文件内容，这解释了一个cfile格式的块的内容，并输出解码的行数据。
kudu fs dump cfile 8 -fs_wal_dir=/data/kudu/tserver_data -fs_data_dirs=/data/kudu/tserver_data
-
kudu fs dump tree [-fs_wal_dir=
] [-fs_data_dirs=] 功能：输出[-fs_wal_dir=
] [-fs_data_dirs=]的文件目录结构 -
kudu fs dump uuid [-fs_wal_dir=
] [-fs_data_dirs=] 功能：获取[-fs_wal_dir=
] [-fs_data_dirs=] 的uuid
-
kudu perf loadgen
[-buffer_flush_watermark_pct=] [-buffer_size_bytes=] [-buffers_num=] [-flush_per_n_rows=] [-keep_auto_table] [-num_rows_per_thread=] [-num_threads=] [-run_scan] [-seq_start=] [-show_first_n_errors=] [-string_fixed=] [-string_len=] [-table_name=] [-table_num_buckets=] [-table_num_replicas=] [-use_random] - kudu1.4.0不支持