database - 无法在 ubuntu 上运行 Mongodb

Question

在尝试访问 mongodb 时出现连接失败的错误

1. 在运行 mongod 命令时我得到了

   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] MongoDB 
   starting : pid=2580 port=27017 dbpath=/data/db 64-bit host=gten
   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] db version 
   v3.6.3
   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] git 
   version: 9586e557d54ef70f9ca4b43c26892cd55257e1a5
   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] OpenSSL 
   version: OpenSSL 1.1.0g  2 Nov 2017
   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] allocator: 
   tcmalloc
   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] modules: 
   none
   2019-02-25T11:05:05.870+0530 I CONTROL  [initandlisten] build 
   environment:
   2019-02-25T11:05:05.871+0530 I CONTROL  [initandlisten]     
   distarch: x86_64
   2019-02-25T11:05:05.871+0530 I CONTROL  [initandlisten]     
   target_arch: x86_64
   2019-02-25T11:05:05.871+0530 I CONTROL  [initandlisten] options: 
   {}
   2019-02-25T11:05:05.962+0530 I STORAGE  [initandlisten] exception 
   in initAndListen: IllegalOperation: Attempted to create a lock 
   file on a read-only directory: /data/db, terminating
   2019-02-25T11:05:05.962+0530 I CONTROL  [initandlisten] now 
   exiting
   2019-02-25T11:05:05.962+0530 I CONTROL  [initandlisten] shutting 
   down with code:100
   

当我运行 mongo 命令时，我得到了

MongoDB shell version v4.0.6
connecting to: mongodb://127.0.0.1:27017/?gssapiServiceName=mongodb
2019-02-25T11:16:44.802+0530 E QUERY    [js] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: Connection refused :
connect@src/mongo/shell/mongo.js:343:13
@(connect):1:6
exception: connect failed

我不知道我遇到的问题是什么 [ https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/]和[https://www.howtoforge.com/tutorial/install-mongodb-on-ubuntu-16.04/] 安装 mongo。

配置: 我正在使用 UBUNTU 18.04。 任何帮助表示赞赏我已经经历了很多答案并尝试了所有但仍然面临同样的问题。提前致谢

在做了很多事情之后我得到了

2019-02-25T18:52:27.197+0530 I CONTROL  [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] MongoDB starting : pid=27390 port=27017 dbpath=/data/db 64-bit host=gten
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] db version v4.0.6
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] git version: caa42a1f75a56c7643d0b68d3880444375ec42e3
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.1.0g  2 Nov 2017
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] allocator: tcmalloc
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] modules: none
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] build environment:
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten]     distmod: ubuntu1804
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten]     distarch: x86_64
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten]     target_arch: x86_64
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] options: {}
2019-02-25T18:52:27.200+0530 E STORAGE  [initandlisten] Failed to set up listener: SocketException: Address already in use
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] now exiting
2019-02-25T18:52:27.200+0530 I CONTROL  [initandlisten] shutting down with code:48

Answer 1

如果你遇到这个问题，这意味着你正在尝试连接 mongo shall without 在本地运行服务器会出现此问题

有些系统不会在机器启动时自动运行 mongo 服务。 所以你需要手动启动它。

每次启动机器或想使用 mongo 时运行此命令以运行服务

sudo service mongod start
// or 
sudo systemctl start mongod

运行 sudo service mongod status 并查看返回的内容。 如果停止， 运行 sudo service mongod start 启动 mongodb 并尝试连接它。

如果 sudo service mongod start 给出错误则

使用以下内容创建文件 /lib/systemd/system/mongod.service:

[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target

[Service]
User=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf

[Install]
WantedBy=multi-user.target

如果错误仍然存​​在，请分享控制台错误。一开始，我们可能会更好地帮助您。