MongoDB shell version v3.4.2
connecting to: mongodb://127.0.0.1:27017
2017-03-01T12:06:59.013+0800 W NETWORK [thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: Connection refused
2017-03-01T12:06:59.015+0800 E QUERY [thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed :
connect@src/mongo/shell/mongo.js:237:13
@(connect):1:6
exception: connect failed
伊谢尔伦2017-05-02 09:27:24
The answer above is the correct answer. MongoDB is not started!
Note: connect failed
Love MongoDB! Have Fun!
淡淡烟草味2017-05-02 09:27:24
Try restarting mongodb first:
sudo service mongod restart
If it doesn’t work, delete the mongod.lock
files in the data directory (the default data directory is /var/lib/mongodb) and try the previous step again
漂亮男人2017-05-02 09:27:24
ps -ef | grep mongo
Check if there is any process
/etc/init.d/mongod start