mongodb链接问题。

Question

flytutu@flytutu-X550JK:~$ mongo

MongoDB shell version: 3.2.6

connecting to: test

2016-06-02T12:30:02.242+0800 W NETWORK  [thread1] Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused

2016-06-02T12:30:02.242+0800 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

利用终端链接，出现了这个问题，网上的方法也尝试过，没有成功，求解决方法。