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How to fix permission error for /tmp/mongodb-27107.sock for Docker container running in AWS

Posted on November 3, 2020

I am starting up MongoDB in a docker container running in an AWS EC2 instance. By company policy, the instance cannot connect to the internet, so I have created a custom Amazon Machine Image that has docker and two images of mongo (3.4 and latest as of the second-to-last week of October 2020). Docker seems to be installed and working fine when I bring up a new EC2 instance, but whenever I run docker run -d -p 27017:27017 -v bigid-mongo-data:/data/db --name bigid-mongo mongo:3.4 I get the following line in the log

2020-11-02T16:14:55.138+0000 E NETWORK [initandlisten] listen(): bind() failed Permission denied for socket: /tmp/mongodb-27017.sock 2020-11-02T16:14:55.138+0000 E NETWORK [initandlisten] Failed to set up sockets during startup. 2020-11-02T16:14:55.138+0000 E STORAGE [initandlisten] Failed to set up listener: InternalError: Failed to set up sockets

which is followed by exit code 48. Similarly, when I run docker run -d -p 27017:27017 -v bigid-mongo-data:/data/db --name bigid-mongo mongo to use the latest image, I see

{“t”:{“$date”:“2020-11-02T16:43:19.058+00:00”},“s”:“E”, “c”:“STORAGE”, “id”:20568, “ctx”:“initandlisten”,“msg”:“Error setting up listener”,“attr”:{“error”:{“code”:9001,“codeName”:“SocketException”,“errmsg”:“Permission denied”}}}

instead. Docker works when I use the hello-world image that I pulled and I have already tried changing the permissions of /tmp using chmod 1777 /tmp so I am not sure what further steps to take to resolve this issue.



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Hi there @mrmardis93,

I could suggest changing the owner of the socket to the MongoDB user:

  1. sudo chown mongodb:mongodb /tmp/mongodb-27017.sock

Let me know how it goes! Regards, Bobby

(Starting a new chain because I cannot reply to the old one.)

Thank you for the help, @bobbyiliev!

I am still unsure about what is causing the problem, but I am going to create a new Custom AMI. An instance using a previous AMI worked one time and then had the same error, so I hope that another new AMI can fix this.

I will report back here if it is successful or ask a new question if I encounter a different problem.

Best, Mr. M

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