mongod : Failed to unlink socket file

Question

I am trying to start mongod. I run "sudo service mongod start", but I get:

`Failed to unlink socket file /tmp/mongodb-27017.sock Unknown error Fatal Assertion 40486 at src/mongo/transport/transport_layer_asio.cpp 685

`

Theres a question here but I have tried all solutions to no avail

Os : ubuntu 16.04 When I run "ls -lsah /tmp/mongodb-27017.sock" I see:

 0 srwx------ 1 mongodb mongodb 0 Jun 14 11:45 /tmp/mongodb-27017.sock

Then I run

    sudo service mongod start

When I run "ls -lsah /tmp/mongodb-27017.sock" again, I see:

0 srwx------ 1 mongodb mongodb 0 Jun 14 11:45 /tmp/mongodb-27017.sock

Then I run "mongod", It given same error

Answer 1

I had the same problem and noticed this old answer: https://stackoverflow.com/a/34290982/2683681 .

You can use their command:

sudo chown `whoami` /tmp/mongodb-27017.sock

But if you're using root then you'd better be doing:

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

My problem stemmed from the fact that root owned the socket.