Failed to unlink socket file /tmp/mongodb-27017.sock Permission denied

my mongodb server had stoped working on  my mac: 

 check the log file and found the error:

Check the /tmp/mongodb-27017.sock permission, owner is root?

output

"0 srwx------ 1 mongodb mongodb 0 Aug 24 04:01 /tmp/mongodb-27017.sock"

solution:

then

start mongo, it appears:

try to repair, but failed!

check th mongod.conf file (/usr/local/etc/mongod.conf), but it's not in the path.

ok, reinstall ?

$ brew uninstall [email protected]

$ brew install [email protected]

$ brew services start [email protected] 

In addition to the binaries, the install creates:

• the configuration file (/usr/local/etc/mongod.conf)
• the log directory path (/usr/local/var/log/mongodb)
• the data directory path (/usr/local/var/mongodb)

run mongodb community :

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

about to fork child process, waiting until server is ready for connections.

forked process: 37247

ERROR: child process failed, exited with error number 1

To see additional information in this output, start without the "--fork" option.

192:etc jessea$ mongod --config /usr/local/etc/mongod.conf

2020-04-08T21:51:29.689+0800 F  CONTROL  [main] Failed global initialization: FileNotOpen: logpath "/usr/local/var/log/mongodb/mongo.log" should name a file, not a directory.

$ cd /usr/local/var/log/mongodb/

// if you want to remove file, use rm filename

$ rm -r mongo.log

$ touch mongo.log

// To run MongoDB manually as a background process 

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

about to fork child process, waiting until server is ready for connections.

forked process: 37320

child process started successfully, parent exiting

$ brew services start [email protected]

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

$ brew services list

Name              Status  User   Plist

mongodb-community started /Users/jessea/Library/LaunchAgents/homebrew.mxcl.mongodb-community.plist

// connect a mongo shell to the running instance. ( or "mongo --port 27017")

$ mongo

MongoDB shell version v4.2.5

connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb

Implicit session: session { "id" : UUID("751dee53-9e1f-4c41-a361-95e2918f4426") }

MongoDB server version: 4.2.5

Server has startup warnings: 

2020-04-08T22:05:15.048+0800 I  CONTROL  [initandlisten] 

2020-04-08T22:05:15.049+0800 I  CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.

2020-04-08T22:05:15.050+0800 I  CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.

2020-04-08T22:05:15.051+0800 I  CONTROL  [initandlisten] 

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Enable MongoDB's free cloud-based monitoring service, which will then receive and display

metrics about your deployment (disk utilization, CPU, operation statistics, etc).

The monitoring data will be available on a MongoDB website with a unique URL accessible to you

and anyone you share the URL with. MongoDB may use this information to make product

improvements and to suggest MongoDB products and deployment options to you.

To enable free monitoring, run the following command: db.enableFreeMonitoring()

To permanently disable this reminder, run the following command: db.disableFreeMonitoring()

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> exit