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Aug 2022

I found a screenshot in a post you deleted that might shed some light on things. Below is a portion of that screenshot:

Note that it there are warnings stating that mongodb-community must be run as non-root to start at user login. This would line up with what I said earlier that this should be your normal user. It looks like you need to brew uninstall the package and manually clean up the mentioned directories and then brew install with your normal user.

That could be correct for Redis, but I’m not sure. Redis processes have nothing to do with MongoDB.

Does brew services still show root as the user? If so you need to uninstall MongoDB and manually remove the directories/files in the screenshot that I posted earlier. You then need to reinstall MongoDB with your normal user account so that it can start up properly.

Unfortunately you have not supplied the MongoDB logs so again we can’t help with why the service is having issues starting up. I have put steps to get the log data in my original post. Once you post the log then we can provide more help.

Looking at the screenshot you provided I can see (about half way down) where it says Waiting for connections and then towards the bottom of the screen I can see a connection was made with the MongoDB Shell.

Are you have issues?

Actually the first issue is in brew services it’s stating error with mongoDB community@5.0
And the second is temporary the connections are made through mongo shell and later it’s not able to connect to the server

If brew services start mongodb-community is failing to start it sounds like there is an instance of mongod already running, but that’s just a suggestion from what I’ve seen in the past. Again, the screenshot only shows a limited amount of the log file and from what I can see the mongod service is indeed running.

What are the results of running ps -ef | grep mongod? If you get a result then kill the process, delete the current log file and try staring via brew once more. If mongod fails to start the log should be relatively small. and it will be easier to see what’s happening.

OK, so this shows that mongod is running and explains why you can connect via either mongo or mongosh. It also explains why you are not able to start the process using brew start ....

The 0 in the first column of the first line show that is running under the root user which is not good. I would run kill 334 to stop that process and then brew service start mongodb-community to allow brew to run the process.

One thing to note here is that since the process is currently running as root, that user probably owns the directories and files and those will need to be either deleted or have their ownership changed to your normal user so brew start ... does not fail due to permission issues.

I can’t stress this enough, you should never run a service/daemon as the root user unless explicitly told to do so, and even then only do it as long as you understand the risks involved with doing so.

Did you check permissions/ownership of dbpath & logpath directories as Doug_Duncan mentioned above?
Since it was run as root previously they might be owned by root and when you start the service as normal user mongod is not able to write
Your log shows only shutdown related messages none related to startup

Please show full path by pwd command
Did you try restart of your service
Also can you spinup another mongod on different port,dbpath,logpath where mongod can write