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HomeDatabaseMysql Tutorialmongodb关于启动权限的问题

mongodb关于启动权限的问题

Jun 07, 2016 pm 03:54 PM
mongodbaboutstart upPermissionsquestion

mongodb在ubuntu的安装 安装完成,在/etc/mongodb.conf配置自己的 dbpath,logpath等,即可指定到路径。 然后即可使用service来启动mongo数据库: service mongodb start/stop service的默认权限是 mongodb 用户,一般不是root用户 问题 有时候我们会因为数

mongodb在ubuntu的安装

安装完成,在/etc/mongodb.conf配置自己的 dbpath,logpath等,即可指定到路径。

然后即可使用service来启动mongo数据库:

service mongodb start/stop
service的默认权限是mongodb用户,一般不是root用户

问题

有时候我们会因为数据的问题(如备份mongodump, 恢复mongorestore)会重新修复数据库存

mongod --repair --dbpath=f:/dbpath
这个时候就要注意你所使用的权限了,一般会是root用户。

不过问题就来了,当你重启mongodb的时候,发现启动不了,log日志报出的是:

Fri Mar 28 13:05:01 [initandlisten] exception in initAndListen: 10309 Unable to create/open lock file: 
/opt/mongo/data/mongod.lock errno:13 Permission denied

或者

warning couldn't write to / rename file /data/db/journal/prealloc.0: couldn't open file 
/opt/mongo/data/journal/prealloc.0 for writing errno:13 Permission denied 
Fri Mar 28 13:09:59 [initandlisten] exception in initAndListen: 13516 couldn't open file 
/opt/mongo/data/journal/j._0 for writing errno:13 Permission denied, terminating

等等,基本上都是说Permission denied的事。

解决

其实也很明险,主要还是权限的问题。

当你使用 “root”账号在 mongod上做一些文章的时候,生成的文件和目录都会是root的权限。

而当你用service mongodb start时,这个的启动并不是root账号,一般是mongodb账号,因而自然访问不了一些root的文件和文件夹了。

所以只要重新分配dbpath的权限即可:

sudo chown -R mkyong /data/db (自定义的data路径也可)
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