"brew services restart mongodb-community" throws a status of error under brew services list. What is this error?

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I recently completed the m001 basics course on Mongo University and connecting to Atlas with the connection string was not a problem. With experimenting I messed up and now I am not able to start mongo. The steps I followed are (from my root directory):

  1. brew doctor --verbose

to make sure Homebrew is running correctly and there were no issues.

HomeBrew version: 3.0.1,

macOs: 11.1,

Homebrew Cask Staging Location: /usr/local/Caskroom

Homebrew Cask Taps: /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask (3823 casks)

/usr/bin/xattr

  1. brew cleanup

  2. brew update

  3. brew tap mongodb/brew Mongo Docs installation

  4. brew install mongodb-community@4.4

Already downloaded: /Users/kevinturney/Library/Caches/Homebrew/downloads/269692f6b2d908000ecd7602021f4826947a782576c1fea760d25ece5ccbb521--mongodb-macos-x86_64-4.4.3.tgz

  1. brew services start mongodb-community@4.4

Service mongodb-community already started, use brew services restart mongodb-community to restart.

  1. brew services restart mongodb-community

==> Successfully stopped mongodb-community (label: homebrew.mxcl.mongodb-community)

==> Successfully started mongodb-community (label: homebrew.mxcl.mongodb-community)

  1. kevinturney / $ brew services list

Here is the error:

Name Status User Plist
mongodb-community error kevinturney /Users/kevinturney/Library/LaunchAgents/homebrew.mxcl.mongodb-community.plist
mysql stopped
postgresql stopped
redis stopped
unbound stopped

I checked the processes,

MongDB University-processes

  1. ps -ef | grep mongo

501 10770 81999 0 10:34AM ttys007 0:00.00 grep mongo

  1. ps -ef | grep mongod

501 10776 81999 0 10:34AM ttys007 0:00.00 grep mongod

  1. ps -ef | grep mongos

01 10781 81999 0 10:34AM ttys007 0:00.00 grep mongos

  1. mongo --version

MongoDB shell version v4.2.2
git version: a0bbbff6ada159e19298d37946ac8dc4b497eadf
allocator: system
modules: enterprise
build environment:
distarch: x86_64
target_arch: x86_64

  1. mongod --version

db version v4.2.2
git version: a0bbbff6ada159e19298d37946ac8dc4b497eadf
allocator: system
modules: enterprise
build environment:
distarch: x86_64
target_arch: x86_64

When I run brew services start mongodb-community it successfully starts and then

mongo this is the result:

kevinturney / $ brew services start mongodb-community

==> Successfully started `mongodb-community` (label: homebrew.mxcl.mongodb-community)

kevinturney / $ mongo

MongoDB shell version v4.2.2<br/>
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb<br/>
2021-02-17T11:37:32.192-0500 E  QUERY    [js] Error: couldn't connect to server 127.0.0.1:27017, <br/>connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: Connection refused :
connect@src/mongo/shell/mongo.js:341:17<br/>
@(connect):2:6
2021-02-17T11:37:32.195-0500 F  -        [main] exception: connect failed
2021-02-17T11:37:32.195-0500 E  -        [main] exiting with code 1

I followed a very similar StackOverflow question, went though mongo docs, uninstalled, reinstalled, Also, tried this great post I am not sure what to try next.

mongodb homebrew
2 Answers

If you are using macOS Catalina / BigSur Above this fix will work:

Go to command line and execute these commands, you need to use SUDO else this will not work.

We first remove the folder mongodb,

sudo rm -rf /usr/local/var/mongodb

then, we add it manually,

cd /usr/local/var && mkdir mongodb

Now, we run the brew service as below, please mention the mongodb version at the end, as below:

brew services start mongodb-community@5.0

If you get below response please restart the service,

Service `mongodb-community` already started, use `brew services restart mongodb-community` to restart.

To restart the service use below, please mention the mongodb version at the end:

brew services restart mongodb-community@5.0

Stopping `mongodb-community`... (might take a while)
==> Successfully stopped `mongodb-community` (label: homebrew.mxcl.mongodb-commu
==> Successfully started `mongodb-community` (label: homebrew.mxcl.mongodb-commu

Now we list all services, with below command:

brew services list

Output:

Name              Status  User       Plist
mongodb-community started xxx         homebrew.mxcl.mongodb-community.plist

Open your Terminal and type mongod –version to verify your installation.

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