mongodb cannot start?

Question

D:\projects\myblog>mongo
MongoDB shell version v3.4.4
connecting to: mongodb://127.0.0.1:27017
2017-05-14T23:17:25.098+0800 W NETWORK  [thread1] Failed to connect to 127.0.0.1:27017 after 5000ms milliseconds, giving up.
2017-05-14T23:17:25.099+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

Answer 1

The mongo server has not been started. First enter mongod to start the server before mongo can connect and perform subsequent operations

Answer 2

D:\Program Files\MongoDB\Server\3.4\bin>mongod
2017-05-14T23:43:59.949+0800 I CONTROL  [initandlisten] MongoDB starting : pid=14884 port=27017 dbpath=D:\data\db\ 64-bit host=DESKTOP-EALT52P
2017-05-14T23:43:59.950+0800 I CONTROL  [initandlisten] targetMinOS: Windows 7/Windows Server 2008 R2
2017-05-14T23:43:59.950+0800 I CONTROL  [initandlisten] db version v3.4.4
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] git version: 888390515874a9debd1b6c5d36559ca86b44babd
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1u-fips  22 Sep 2016
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] allocator: tcmalloc
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] modules: none
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] build environment:
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten]     distmod: 2008plus-ssl
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten]     distarch: x86_64
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten]     target_arch: x86_64
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] options: {}
2017-05-14T23:43:59.951+0800 I STORAGE  [initandlisten] exception in initAndListen: 29 Data directory D:\data\db\ not found., terminating
2017-05-14T23:43:59.951+0800 I NETWORK  [initandlisten] shutdown: going to close listening sockets...
2017-05-14T23:43:59.951+0800 I NETWORK  [initandlisten] shutdown: going to flush diaglog...
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] now exiting
2017-05-14T23:43:59.951+0800 I CONTROL  [initandlisten] shutting down with code:100

Answer 3

I saw a discussion on a MongoDB forum, you can take a look:

http://forum.foxera.com/mongo...

Answer 4

exception in initAndListen: 29 Data directory D:\data\db\ not found., terminating

Many obvious error messages