升级到Mac OS 10.15(Catalina)后，MongoDB找不到数据目录 [英] MongoDB can't find data directory after upgrading to Mac OS 10.15 (Catalina)

问题描述

我今天更新到了MacOS 10.15(Catalina).当我在终端中运行mongod时，找不到/data/db目录:

I updated to MacOS 10.15 (Catalina) today. When I run mongod in the terminal it cannot find the /data/db directory:

➜  /Users/william > mongod
2019-10-08T17:02:44.183+0800 I CONTROL  [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] MongoDB starting : pid=43162 port=27017 dbpath=/data/db 64-bit host=Williams-MacBook-Pro-6.local
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] db version v4.0.3
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] git version: 7ea530946fa7880364d88c8d8b6026bbc9ffa48c
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] allocator: system
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] modules: none
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] build environment:
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten]     distarch: x86_64
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten]     target_arch: x86_64
2019-10-08T17:02:44.209+0800 I CONTROL  [initandlisten] options: {}
2019-10-08T17:02:44.211+0800 I STORAGE  [initandlisten] exception in initAndListen: NonExistentPath: Data directory /data/db not found., terminating
2019-10-08T17:02:44.211+0800 I NETWORK  [initandlisten] shutdown: going to close listening sockets...
2019-10-08T17:02:44.211+0800 I NETWORK  [initandlisten] removing socket file: /tmp/mongodb-27017.sock
2019-10-08T17:02:44.211+0800 I CONTROL  [initandlisten] now exiting
2019-10-08T17:02:44.211+0800 I CONTROL  [initandlisten] shutting down with code:100
➜  /Users/william > 

我尝试用brew安装MongoDB:

I tried to install MongoDB with brew:

brew install mongodb

➜  /Users/william > brew install mongodb
Updating Homebrew...
Error: mongodb: unknown version :mountain_lion

有帮助吗?

推荐答案

这是主要错误:

initAndListen中的异常:NonExistentPath:找不到数据目录/data/db.正在终止

exception in initAndListen: NonExistentPath: Data directory /data/db not found., terminating

Catalina发生了意外更改:不允许更改根目录(在论坛线程):

Catalina has a surprise change: it won't allow changes to the root directory (this was discussed in a forum thread as well):

% sudo mkdir -p /data/db
mkdir: /data/db: Read-only file system

不幸的是，除了苹果的 Catalina发行说明中没有明确说明.在 Catalina功能中简短提及:

Unfortunately, this is not spelled out explicitly in Apple's Catalina release notes, other than a brief mention in Catalina features:

macOS Catalina在专用的只读系统卷中运行

macOS Catalina runs in a dedicated, read-only system volume

由于目录/data/db被编码为MongoDB默认目录，一种解决方法是指定不在根目录上的其他dbpath.例如:

Since the directory /data/db is coded as MongoDB default, a workaround is to specify a different dbpath that is not located on the root directory. For example:

mongod --dbpath ~/data/db

这会将MongoDB的数据放在您的主目录中.只需确保路径~/data/db实际上存在.

This will place MongoDB's data in your home directory. Just make sure that the path ~/data/db actually exists.

替代方法

另一种方法是按照安装MongoDB上的说明进行操作利用brew:

brew tap mongodb/brew
brew install mongodb-community

默认情况下，这将创建一些其他文件:

This will create some additional files by default:

• 配置文件(/usr/local/etc/mongod.conf)
• 日志目录路径(/usr/local/var/log/mongodb)
• 数据目录路径(/usr/local/var/mongodb)

要运行mongod，您可以:

• 从命令行手动运行命令(为方便起见，可以使用别名):

• Run the command manually from the command line (this can be aliased for convenience):

mongod --config /usr/local/etc/mongod.conf

使用brew services将MongoDB作为服务运行.请注意，这会将MongoDB作为独立节点(而不是副本集)运行，因此取决于oplog的功能例如除非您修改mongod配置文件，否则changestreams将不起作用:

Run MongoDB as a service using brew services. Note that this will run MongoDB as a standalone node (not a replica set), so features that depends on the oplog e.g. changestreams will not work unless you modify the mongod configuration file:

brew services start mongodb-community

这篇关于升级到Mac OS 10.15(Catalina)后，MongoDB找不到数据目录的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！