更改 MongoDB 数据存储目录 [英] Changing MongoDB data store directory

问题描述

到目前为止，我还没有指定 MongoDB 数据目录，并且只有一个 30 GB 的主分区.

Until now I have not been specifying a MongoDB data directory and have had only one 30 GB primary partition.

我刚刚用完了空间并添加了一个新硬盘.我如何传输我的数据(显然在 /var/lib/mongodb/ 中)并配置 MongoDB 以便所有内容都从新磁盘运行而不影响我现有的安装?

I just ran out of space and added a new hard disk. How can I transfer my data (that is apparently in /var/lib/mongodb/) and configure MongoDB so that everything runs off of the new disk without affecting my existing installation?

推荐答案

简短的回答是 MongoDB 中的 --dbpath 参数将允许您控制 MongoDB 从哪个目录读取和写入数据.

The short answer is that the --dbpath parameter in MongoDB will allow you to control what directory MongoDB reads and writes it's data from.

mongod --dbpath/usr/local/mongodb-data

mongod --dbpath /usr/local/mongodb-data

将启动mongodb并将文件放入/usr/local/mongodb-data.

Would start mongodb and put the files in /usr/local/mongodb-data.

根据您的发行版和 MongoDB 安装，您还可以配置 mongod.conf 文件以自动执行此操作:

Depending on your distribution and MongoDB installation, you can also configure the mongod.conf file to do this automatically:

# Store data in /usr/local/var/mongodb instead of the default /data/db
dbpath = /usr/local/var/mongodb

官方 10gen Linux 软件包(Ubuntu/Debian 或CentOS/Fedora) 附带一个基本配置文件在 /etc/mongodb.conf 中，MongoDB 服务在启动时读取它.您可以在此处进行更改.

The official 10gen Linux packages (Ubuntu/Debian or CentOS/Fedora) ship with a basic configuration file which is placed in /etc/mongodb.conf, and the MongoDB service reads this when it starts up. You could make your change here.

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