After the update, MongoDB fails to start

After encountering some naming errors, I decided to upgrade my MongoDB server from version 3.2 to 3.6. The 3.2 version was working perfectly fine for me until then.

I downloaded MongoDB 3.6 from https://www.mongodb.com/download-center/community, installed it using the package manager (sudo dpkg -i mongodb-org-server_3.6.12_amd64.deb), and verified the update by running mongod --version.

According to my knowledge, the system starts up without any issues, but when I try to run mongo or sudo mongo, I receive the following output:

MongoDB shell version: 3.2.22
connecting to: test
2019-05-14T13:28:09.049-0400 W NETWORK  [thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: errno:111 Connection refused
2019-05-14T13:28:09.049-0400 E QUERY    [thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed :
connect@src/mongo/shell/mongo.js:229:14
@(connect):1:6

exception: connect failed

I have attempted to resolve this issue by restarting the service and even the entire Ubuntu 16.04 server where it's hosted, to no avail. Unfortunately, none of the solutions I found online were successful either. If you have a possible solution to this problem, please share it with me. Thank you!

javascriptmongodbnpm

Answer №1

Prior to that, experiment with this:

sudo systemctl stop mongod
sudo rm /var/lib/mongodb/mongod.lock
mongod --repair
sudo systemctl start mongod

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