標籤:mongodb rs
rs是一個全域的變數,其中那個包含與複製相關的輔助函數,這些函數大多隻是資料庫命令的封裝器,例如
>db.adminCommand({“replSetInitiate”:config})
就和
>rs.initiate(config)
命令是等價的,但是明顯後者更容易操作;多瞭解一下輔助函數還是比較利於操作的。
執行rs.help()可查看可用的輔助函數,如下:
spock:PRIMARY> rs.help() rs.status() { replSetGetStatus : 1 } checks repl set status rs.initiate() { replSetInitiate : null } initiates set with default settings rs.initiate(cfg) { replSetInitiate : cfg } initiates set with configuration cfg rs.conf() get the current configuration object from local.system.replset rs.reconfig(cfg) updates the configuration of a running replica set with cfg (disconnects) rs.add(hostportstr) add a new member to the set with default attributes (disconnects) rs.add(membercfgobj) add a new member to the set with extra attributes (disconnects) rs.addArb(hostportstr) add a new member which is arbiterOnly:true (disconnects) rs.stepDown([secs]) step down as primary (momentarily) (disconnects) rs.syncFrom(hostportstr) make a secondary to sync from the given member rs.freeze(secs) make a node ineligible to become primary for the time specified rs.remove(hostportstr) remove a host from the replica set (disconnects) rs.slaveOk() shorthand for db.getMongo().setSlaveOk()rs.printReplicationInfo() check oplog size and time range rs.printSlaveReplicationInfo() check replica set members and replication lag db.isMaster() check who is primaryreconfiguration helpers disconnect from the database so the shell will display an error, even if the command succeeds. see also http://<mongod_host>:28017/_replSet for additional diagnostic info
本文出自 “緣隨心愿” 部落格,請務必保留此出處http://281816327.blog.51cto.com/907015/1611295
【MongoDB學習筆記33】MongoDB複本集rs輔助函數