无法使用 mongod 和 mongo 启动 MongoDB 服务答案

【问题标题】：Can't start MongoDB service with either mongod & mongo无法使用 mongod 和 mongo 启动 MongoDB 服务
【发布时间】：2017-05-29 01:35:17
【问题描述】：

您好，我的 MongoDB 有问题，它工作得很好，在我重新启动服务器并报废后出现。

当我运行命令时

$ mongo

它回应

MongoDB shell version: 3.2.13
connecting to: test
2017-05-29T01:11:42.948+0000 W NETWORK  [thread1] Failed to connect to     127.0.0.1:27017, in(checking socket for error after poll), reason: errno:111 Connection refused
2017-05-29T01:11:42.948+0000 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

我也运行了这个命令

$ mongod

它给我这个错误信息

2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] MongoDB starting : pid=2530 port=27017 dbpath=/data/db 64-bit host=something
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] db version v3.2.13
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] git version: 23899209cad60aaafe114f6aea6cb83025ff51bc
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] allocator: tcmalloc
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] modules: none
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] build environment:
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten]     distmod: ubuntu1604
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten]     distarch: x86_64
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten]     target_arch: x86_64
2017-05-29T01:17:58.441+0000 I CONTROL  [initandlisten] options: {}
2017-05-29T01:17:58.469+0000 E NETWORK  [initandlisten] Failed to unlink socket file /tmp/mongodb-27017.sock errno:1 Operation not permitted
2017-05-29T01:17:58.469+0000 I -        [initandlisten] Fatal Assertion 28578
2017-05-29T01:17:58.469+0000 I -        [initandlisten] 

***aborting after fassert() failure

然后我尝试了

sudo service mongod start
sudo service mongod status

它给了我这个失败错误

● mongod.service - High-performance, schema-free document-oriented database
  Loaded: loaded (/lib/systemd/system/mongod.service; disabled; vendor preset: enabled)
  Active: failed (Result: exit-code) since Mon 2017-05-29 01:24:29 UTC; 1min 29s ago
  Docs: https://docs.mongodb.org/manual
  Process: 3200 ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf (code=exited, status=100)
  Main PID: 3200 (code=exited, status=100)

  May 29 01:24:29 something systemd[1]: Started High-performance, schema-free document-oriented database.
  May 29 01:24:29 something systemd[1]: mongod.service: Main process exited, code=exited, status=100/n/a
  May 29 01:24:29 something systemd[1]: mongod.service: Unit entered failed state.
  May 29 01:24:29 something systemd[1]: mongod.service: Failed with result 'exit-code'.

我已经尝试删除套接字文件并试一试，但没有成功。提前谢谢你！ :)

【问题讨论】：

标签： mongodb ubuntu digital-ocean

【解决方案1】：

我不确定这是否是正确的答案。但是，在我看来，

2017-05-29T01:17:58.469+0000 E NETWORK [initandlisten] 无法取消链接套接字文件 /tmp/mongodb-27017.sock errno:1 不允许操作

是主要问题。也许你可以仔细检查谁拥有这个？还有权限？

在我的 mongo 中看起来像这样：

希望对你有帮助

【讨论】：

对我来说，我没有创建用户 mongodb，所以 root 是所有者。那会是问题吗？

【解决方案2】：

rm /var/lib/mongodb/mongod.lock
systemctl restart mongod
systemctl status mongod

【讨论】：

请尝试描述解决方案，而不是仅仅使用代码。
此外，日志表明 Unix 域套接字文件 /tmp/mongodb-27017.sock 存在问题，而不是锁定文件。