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mongodb error:mongodb 3.0.5 wiredTiger非正常关机修复过程实战记录(windows )

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 Failed global initialization: FileNotOpen: Failed to open "f:\MongoDB\log\mongod.log" (mongodb 4.2)

 

 mongodb:4.2

 Failed global initialization: FileNotOpen: Failed to open "f:\MongoDB\log\mongod.log"

 

reason:

aready open a mongodb

 

 

mongodb:3.0.5

一、系统环境

os:windows 2012

mongodb:3.0.5

storageEngine:wiredTiger

 

二、配置文件 配置文件

mongod.cfg 内容如下:

dbpath=g:\mongodb\dataWiredTiger

storageEngine=wiredTigersync

delay=60quiet=true

journal=false

三、启动时出现的错误信息及解决办法

1、删去mongod.lock

cmd

运行启动命令 .

cd \mongodb\binmongod --config=e:\mongodb\mongod.cfg

出现错误信息: Detected unclean shutdown - g:\mongodb\dataWiredTiger\mongod.lock is not empty. exception in initAndListen: 98 Unable to create/open lock file: g:\mongodb\dataWiredTiger\mongod.lock errno:5 拒绝访问。. Is a mongod instance already running?, terminating dbexit: rc: 100

解决办法: 由于重启机器,导致非正常停止mongod服务,mongod.lock中还记录了上次运行的进程号,所以无法启动。清除lock文件。

删去 g:\mongodb\dataWiredTiger\mongod.lock

2、repair数据库

cd \mongodb\bin

mongod --repair g:\mongodb\dataWiredTiger

出现错误信息: exception in initAndListen: 28574 Cannot start server. Detected data files in g:\MongoDB\dataWiredTiger created by storage engine 'wiredTiger'. The configured storage engine is 'mmapv1'., terminating [initandlisten] dbexit: rc: 100

数据库引擎不对,运行命令

mongod --repair --dbpath g:\mongodb\dataWiredTiger --storageEngine wiredTiger  

ok,修复成功

三、重新启动,正常。

正确关闭mongod 的方法:

进入mongo shell use admin db.shutdownServer()

  解决重启失败问题:mongo有一个journal参数,加上这个参数后,就算mongo是非正常关闭,也会自动修复文件。

所以你可以在config文件( /etc/mongodb.conf )中将journal参数打开:

# Disables write-ahead journaling nojournal = true

或者在启动命令加上journal参数:

/usr/local/mongodb/bin/mongod --dbpath=/data/db/ --fork --logpath=/data/log/m.log --journal

64位机,默认journal参数是打开的,而32位机默认关闭。  

other:

Personally, for me to get this working I had to remove the service via the command: 

.\mongod.exe --remove 

followed by an install however this time specifying the storage engine etc. So the command becomes .\mongod.exe --dbpath c:\mongodb\data\wt --logpath

c:\mongodb\log\mongo.log --storageEngine wiredTiger --install

Enter the shell and use the command 

db.serverStatus().storageEngine 

the world suddenly becomes a happier place

 { "name" : "wiredTiger" }    .