MongoDB Master and Slave – Windows或Linux

我最近把我的MS Sql Server数据库移到了Windows Server 2008上的MongoDB（2.0）。它包含2个数据库，其中包含以下数据。 （这两个数据库每秒钟读取大约100次）。 这些写操作由在同一个数据库服务器上运行的.Net应用程序执行。

> db.stats() { "db" : "FirstDB", "collections" : 112, "objects" : 94020788, "avgObjSize" : 62.86065307174409, "dataSize" : 5910208136, "storageSize" : 14340792320, "numExtents" : 1277, "indexes" : 110, "indexSize" : 4279800784, "fileSize" : 27837595648, "nsSizeMB" : 16, "ok" : 1 } > db.stats() { "db" : "SecondDB", "collections" : 10, "objects" : 2926198, "avgObjSize" : 158.5025346883567, "dataSize" : 463809800, "storageSize" : 720027648, "numExtents" : 49, "indexes" : 8, "indexSize" : 115248896, "fileSize" : 2080374784, "nsSizeMB" : 16, "ok" : 1 } 

我发现MongoDB可以以所需的读写速度保存所有的数据。 现在我需要专家的帮助来强化我的单服务器（DB +应用程序）设置的可靠性;

但是，在1个月的时间里，我遇到了MongoDB-On-Windows问题。

• 意料之外的关机导致了腐败的收集
• MongoDB不释放已删除对象的磁盘空间（目前其大约28 GB，并且正在增长）
• 页面错误数量增加
• 无法控制RAM中的数据（无法预先加载RAM中的所需数据并在几分钟后删除）
• 频繁的数据库错误，如：无法从传输连接读取数据…

对于可靠性/备份/性能来说，最好的救援设置是什么？

• nfs：内核服务器不接受mount（rpcinfo：RPC：超时）
• Ubuntu Second Wan接口卡
• XEN主机上运行多个虚拟机的OSPF
• 支持RDP 7.1和PXE的Linux瘦客户机操作系统？
• 我怎样才能configuration一个Xen映像运行在EC2与不同的驱动器名称？

1. 移动MongoDB到Linux（假设我的.Net应用程序使用这个数据库将驻留在同一个局域网内的Windows Server上）？ 要么
2. 使用Windows上的Master和Linux上的Slave来设置双服务器副本集？ 要么
3. 你build议…？

编辑-1：

 > db.serverStatus() { "host" : "OWNEROR-GTPD0H9", "version" : "2.2.2", "process" : "mongod", "pid" : 5972, "uptime" : 2246315, "uptimeMillis" : NumberLong("2246314871"), "uptimeEstimate" : 1418073, "localTime" : ISODate("2013-02-01T18:20:48.371Z"), "locks" : { "." : { "timeLockedMicros" : { "R" : NumberLong(1009609910), "W" : NumberLong("41166641284") }, "timeAcquiringMicros" : { "R" : NumberLong("233444382285"), "W" : NumberLong("26675293061") } }, "admin" : { "timeLockedMicros" : { "r" : NumberLong("20598738435"), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong("681905051780"), "w" : NumberLong(0) } }, "local" : { "timeLockedMicros" : { "r" : NumberLong(7054206), "w" : NumberLong(0) }, "timeAcquiringMicros" : { "r" : NumberLong(323140436), "w" : NumberLong(0) } }, "FirstDB" : { "timeLockedMicros" : { "r" : NumberLong("40372661580"), "w" : NumberLong("54059509747") }, "timeAcquiringMicros" : { "r" : NumberLong("769458843030"), "w" : NumberLong("357708107433") } }, "SecondDB" : { "timeLockedMicros" : { "r" : NumberLong("25053503869"), "w" : NumberLong("395081595504") }, "timeAcquiringMicros" : { "r" : NumberLong("69429086729"), "w" : NumberLong("9163194312205") } } }, "globalLock" : { "totalTime" : NumberLong("2246314871000"), "lockTime" : NumberLong("41166641284"), "currentQueue" : { "total" : 54, "readers" : 52, "writers" : 2 }, "activeClients" : { "total" : 2, "readers" : 0, "writers" : 2 } }, "mem" : { "bits" : 64, "resident" : 69, "virtual" : 34059, "supported" : true, "mapped" : 16793, "mappedWithJournal" : 33586 }, "connections" : { "current" : 114, "available" : 19886 }, "extra_info" : { "note" : "fields vary by platform", "page_faults" : 631285910, "usagePageFileMB" : 6848, "totalPageFileMB" : 49132, "availPageFileMB" : 34274, "ramMB" : 24567 }, "indexCounters" : { "note" : "not supported on this platform" }, "backgroundFlushing" : { "flushes" : 37430, "total_ms" : 86130745, "average_ms" : 2301.115281859471, "last_ms" : 3853, "last_finished" : ISODate("2013-02-01T18:19:49.233Z") }, "cursors" : { "totalOpen" : 227, "clientCursors_size" : 227, "timedOut" : 125, "totalNoTimeout" : 226 }, "network" : { "bytesIn" : 46807928165, "bytesOut" : 24400717839, "numRequests" : 462799358 }, "opcounters" : { "insert" : 92590009, "query" : 92755757, "update" : 183285338, "delete" : 7489, "getmore" : 1004, "command" : 94208472 }, "asserts" : { "regular" : 0, "warning" : 0, "msg" : 0, "user" : 97431, "rollovers" : 0 }, "writeBacksQueued" : false, "dur" : { "commits" : 17, "journaledMB" : 0.139264, "writeToDataFilesMB" : 0.033338, "compression" : 2.2571516556184057, "commitsInWriteLock" : 0, "earlyCommits" : 0, "timeMs" : { "dt" : 3291, "prepLogBuffer" : 0, "writeToJournal" : 8, "writeToDataFiles" : 1, "remapPrivateView" : 38 } }, "recordStats" : { "accessesNotInMemory" : 3942359, "pageFaultExceptionsThrown" : 15956, "FirstDB" : { "accessesNotInMemory" : 163718, "pageFaultExceptionsThrown" : 6931 }, "SecondDB" : { "accessesNotInMemory" : 3778641, "pageFaultExceptionsThrown" : 9025 }, "admin" : { "accessesNotInMemory" : 0, "pageFaultExceptionsThrown" : 0 }, "local" : { "accessesNotInMemory" : 0, "pageFaultExceptionsThrown" : 0 } }, "ok" : 1 }