我有MacOS Catalina版本10.15.5，我按照他们网站上指示的步骤安装了mongoDBhttps://docs.mongodb.com/manual/tutorial/install-mongodb-on-os-x/使用Homebrew。当我检查我的mongoDB是否正确安装时，我使用，mongo命令，我得到/usr/local/bin/mongo响应。当我使用mongo--version和mongod--version时，我得到：

MongoDB shell version v4.2.7
git version: 51d9fe12b5d19720e72dcd7db0f2f17dd9a19212
allocator: system
modules: none
build environment:
    distarch: x86_64
    target_arch: x86_64

和

db version v4.2.7
git version: 51d9fe12b5d19720e72dcd7db0f2f17dd9a19212
allocator: system
modules: none
build environment:
    distarch: x86_64
    target_arch: x86_64

尊重，我认为这意味着它的正确安装，应该工作。

但是当我打开终端并运行命令brew services startmongodb-community@4.2时，我得到了：

Error: undefined method `resolve_alias' for Formula:Class
/usr/local/bin/brew-services.rb:154:in `service'
/usr/local/bin/brew-services.rb:203:in `check'
/usr/local/bin/brew-services.rb:193:in `run!'
/usr/local/bin/brew-services.rb:397:in `<top (required)>'
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
/usr/local/Homebrew/Library/Homebrew/utils.rb:81:in `require?'
/usr/local/Homebrew/Library/Homebrew/brew.rb:112:in `<main>'

注意：我的brew已成功更新和升级！

我在网上搜索了任何解决方案，但我找不到任何解决问题的方法…如果有人遇到过类似的问题，请一步一步地详细解释你是如何解决的？！？！

如果我直接运行命令mongod我得到：

2020-06-04T01:19:41.351+0200 I  CONTROL  [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2020-06-04T01:19:41.355+0200 W  ASIO     [main] No TransportLayer configured during NetworkInterface startup
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] MongoDB starting : pid=24712 port=27017 dbpath=/data/db 64-bit host=Air-de-Ruslan.home
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] db version v4.2.7
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] git version: 51d9fe12b5d19720e72dcd7db0f2f17dd9a19212
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] allocator: system
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] modules: none
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] build environment:
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten]     distarch: x86_64
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten]     target_arch: x86_64
2020-06-04T01:19:41.355+0200 I  CONTROL  [initandlisten] options: {}
2020-06-04T01:19:41.355+0200 E  NETWORK  [initandlisten] Failed to unlink socket file /tmp/mongodb-27017.sock Permission denied
2020-06-04T01:19:41.355+0200 F  -        [initandlisten] Fatal Assertion 40486 at src/mongo/transport/transport_layer_asio.cpp 684
2020-06-04T01:19:41.355+0200 F  -        [initandlisten] 

***aborting after fassert() failure

如果我直接运行命令mongo我得到：

MongoDB shell version v4.2.7
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
2020-06-04T01:21:20.317+0200 E  QUERY    [js] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: Connection refused :
connect@src/mongo/shell/mongo.js:341:17
@(connect):2:6
2020-06-04T01:21:20.320+0200 F  -        [main] exception: connect failed
2020-06-04T01:21:20.320+0200 E  -        [main] exiting with code 1