错误:子进程失败，退出，错误号为51 MongoDB [英] ERROR: child process failed, exited with error number 51 MongoDB

问题描述

重新启动MongoDB时遇到此错误，我使用的是Mongo 3.2.4，并在新计算机上进行了设置

Getting this error while restarting MongoDB , I am using Mongo 3.2.4 and doing this set up on a new machine

Starting mongod... about to fork child process, waiting until server is ready for connections.
forked process: 19438
ERROR: child process failed, exited with error number 51
 mongod(_ZN5mongo19MmapV1ExtentManager4initEPNS_16OperationContextE+0x4A8) [0x1040278]
 mongod(_ZN5mongo26MMAPV1DatabaseCatalogEntryC1EPNS_16OperationContextENS_10StringDataES3_bb+0x187) [0x1036dc7]
 mongod(_ZN5mongo12MMAPV1Engine23getDatabaseCatalogEntryEPNS_16OperationContextENS_10StringDataE+0x14E) [0x103a1de]
 mongod(_ZN5mongo14DatabaseHolder6openDbEPNS_16OperationContextENS_10StringDataEPb+0x133) [0xac92a3]

-----  END BACKTRACE  -----

推荐答案

对我来说，由于对数据目录中某些文件的所有权不正确，因此发生了此错误.我使用以下命令修复了该问题:

For me this error occured due to incorrect ownership of some files in my data directory. I fixed this using the following command:

sudo chown -R mongodb: /path/to/db/directory

在我的情况下，mongodb是数据库用户.

Where mongodb was the database user in my case.

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