分片参考

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Sharding Methods in the mongo Shell mongo Shell中的分片方法

名称

描述

sh.addShard()

Adds a shard to a sharded cluster. 将分片添加到分片集群中。

sh.addShardTag()

In MongoDB 3.4, this method aliases to sh.addShardToZone(). 在MongoDB 3.4中,此方法别名为sh.addShardToZone()。

sh.addShardToZone()

Associates a shard to a zone. Supports configuring zones in sharded clusters. 将分片与区域关联。支持在分片群集中配置区域。

sh.addTagRange()

In MongoDB 3.4, this method aliases to sh.updateZoneKeyRange(). 在MongoDB 3.4中,此方法别名为sh.updateZoneKeyRange()。

sh.disableBalancing()

Disable balancing on a single collection in a sharded database. Does not affect balancing of other collections in a sharded cluster. 在分片数据库中的单个集合上禁用平衡。不会影响分片集群中其他集合的平衡。

sh.enableBalancing()

Activates the sharded collection balancer process if previously disabled using sh.disableBalancing(). 如果以前使用sh.disableBalancing()禁用了分片集合平衡器进程,则将其激活。

sh.disableAutoSplit()

Disables auto-splitting for the sharded cluster. 禁用分片集群的自动拆分。

sh.enableAutoSplit()

Enables auto-splitting for the sharded cluster. 启用分片集群的自动拆分。

sh.enableSharding()

Enables sharding on a specific database. 在特定数据库上启用分片。

sh.getBalancerHost()

Deprecated since MongoDB 3.4 自MongoDB 3.4起不推荐使用。

sh.getBalancerState()

Returns a boolean to report if the balancer is currently enabled. 返回一个布尔值以报告当前是否启用了平衡器。

sh.removeTagRange()

In MongoDB 3.4, this method aliases to sh.removeRangeFromZone(). 在MongoDB 3.4中,此方法别名为sh.removeRangeFromZone()

sh.removeRangeFromZone()

Removes an association between a range of shard keys and a zone. Supports configuring zones in sharded clusters. 删除一系列分片键和区域之间的关联。支持在分片集群中配置区域。

sh.help()

Returns help text for the sh methods. 返回sh的帮助文档。

sh.isBalancerRunning()

Returns a boolean to report if the balancer process is currently migrating chunks. 返回一个布尔值以报告平衡器进程当前是否正在迁移块。

sh.moveChunk()

Migrates a chunk in a sharded cluster. 迁移分片集群中的块。

sh.removeShardTag()

In MongoDB 3.4, this method aliases to sh.removeShardFromZone(). 在MongoDB 3.4中,此方法别名为sh.removeShardFromZone()。

sh.removeShardFromZone()

Removes the association between a shard and a zone. Use to manage zone sharding. 删除分片和区域之间的关联。用于管理区域分片。

sh.setBalancerState()

Enables or disables the balancer which migrates chunks between shards. 启用或禁用在分片之间迁移块的平衡器。

sh.shardCollection()

Enables sharding for a collection. 为集合启用分片。

sh.splitAt()

Divides an existing chunk into two chunks using a specific value of the shard key as the dividing point. 使用分片键的特定值作为分割点将现有的块分为两个块。

sh.splitFind()

Divides an existing chunk that contains a document matching a query into two approximately equal chunks. 将包含与查询匹配的文档的现有块分为两个大致相等的块。

sh.startBalancer()

Enables the balancer and waits for balancing to start. 启用平衡器并等待平衡开始。

sh.status()

Reports on the status of a sharded cluster, as db.printShardingStatus(). 报告分片群集的状态,如db.printShardingStatus()

sh.stopBalancer()

Disables the balancer and waits for any in progress balancing rounds to complete. 禁用平衡器,并等待任何进行中的平衡回合完成。

sh.waitForBalancer()

Internal. Waits for the balancer state to change. 内部。等待平衡器状态更改。

sh.waitForBalancerOff()

Internal. Waits until the balancer stops running. 内部。等待直到平衡器停止运行。

sh.waitForPingChange()

Internal. Waits for a change in ping state from one of the mongos in the sharded cluster. 内部。等待分片群集中的一个mongos的ping状态更改。

sh.updateZoneKeyRange()

Associates a range of shard keys to a zone. Supports configuring zones in sharded clusters. 将一系列分片键与区域关联。支持在分片群集中配置区域。

converShardKeyToHashed()

Returns the hashed value for the input. 返回输入的哈希值。

Sharding Database Commands 分片数据库命令

The following database commands support sharded clusters.

以下数据库命令支持分片群集。

名称

描述

addShard

Adds a shard to a sharded cluster. 添加一个分片到分片集群中。

addShardToZone

Associates a shard with a zone. Supports configuring zones in sharded clusters. 将分片与区域关联。支持在分片群集中配置区域。

balancerStart

Starts a balancer thread. 启动平衡器线程。

balancerStatus

Returns information on the balancer status. 返回有关平衡器状态的信息。

balancerStop

Stops the balancer thread. 停止平衡器线程。

checkShardingIndex

Internal command that validates index on shard key. 验证分片键索引的内部命令。

clearJumboFlag

Clears the jumbo flag for a chunk. 清除块的巨型标志。

cleanupOrphaned

Removes orphaned data with shard key values outside of the ranges of the chunks owned by a shard. 删除分片键值超出分片所拥有的块范围之外的孤立数据。

enableSharding

Enables sharding on a specific database. 在特定数据库上启用分片。

flushRouterConfig

Forces a mongod/mongos instance to update its cached routing metadata. 强制mongod / mongos实例更新其缓存的路由元数据。

getShardMap

Internal command that reports on the state of a sharded cluster. 报告分片群集状态的内部命令。

getShardVersion

Internal command that returns the config server version. 返回配置服务器版本的内部命令。

isdbgrid

Verifies that a process is a mongos. 验证一个进程是mongos。

listShards

Returns a list of configured shards.返回已配置分片的列表。

medianKey

Deprecated internal command. See splitVector. 不推荐使用的内部命令。请参见splitVector

moveChunk

Internal command that migrates chunks between shards. 在分片之间迁移块的内部命令。

movePrimary

Reassigns the primary shard when removing a shard from a sharded cluster. 从分片群集中删除分片时,重新分配主分片。

mergeChunks

Provides the ability to combine chunks on a single shard. 提供在单个分片上合并块的功能。

removeShard

Starts the process of removing a shard from a sharded cluster. 开始从分片群集中删除分片的过程。

removeShardFromZone

Removes the association between a shard and a zone. Supports configuring zones in sharded clusters. 删除分片和区域之间的关联。支持在分片群集中配置区域。

setShardVersion

Internal command to sets the config server version. 内部命令,用于设置配置服务器版本。

shardCollection

Enables the sharding functionality for a collection, allowing the collection to be sharded. 启用集合的分片功能,从而可以对集合进行分片。

shardingState

Reports whether the mongod is a member of a sharded cluster. 报告mongod是否为分片集群的成员。

split

Creates a new chunk. 创建一个新的块。

splitChunk

Internal command to split chunk. Instead use the methods sh.splitFind() and sh.splitAt(). 拆分块的内部命令。而是使用方法sh.splitFind()和sh.splitAt()。

splitVector

Internal command that determines split points. 确定分割点的内部命令。

unsetSharding

Internal command that affects connections between instances in a MongoDB deployment. 影响MongoDB部署中实例之间的连接的内部命令。

updateZoneKeyRange

Adds or removes the association between a range of sharded data and a zone. Supports configuring zones in sharded clusters. 添加或删除范围内的分片数据与区域之间的关联。支持在分片群集中配置区域。

Reference Documentation 参考文档

Operational Restrictions

Requirement for deploying a sharded cluster

Troubleshoot Sharded Clusters

Common strategies for troubleshooting sharded cluster deployments.

Config Database

Complete documentation of the content of the local database that MongoDB uses to store sharded cluster metadata.

操作限制

​ 部署分片集群的要求

对分片群集进行故障排除

​ 解决分片群集部署的常见策略。

配置数据库

​ MongoDB用于存储分片群集元数据的本地数据库内容的完整文档。

原文链接:https://docs.mongodb.com/v4.2/reference/sharding/

译者:张建威