腾讯云centos7.4 MongoDB重启，出现这个错误，是什么原因？怎么排查

Question

[root@VM_0_11_centos /]# systemctl status mongod.service
● mongod.service - High-performance, schema-free document-oriented database
   Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 三 2018-03-14 21:11:18 CST; 9s ago
     Docs: https://docs.mongodb.org/manual
  Process: 20510 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=2)
  Process: 20508 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/SUCCESS)
  Process: 20505 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, status=0/SUCCESS)
  Process: 20504 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUCCESS)

3月 14 21:11:18 VM_0_11_centos systemd[1]: Starting High-performance, schema-free document-oriented database...
3月 14 21:11:18 VM_0_11_centos systemd[1]: mongod.service: control process exited, code=exited status=2
3月 14 21:11:18 VM_0_11_centos systemd[1]: Failed to start High-performance, schema-free document-oriented database.
3月 14 21:11:18 VM_0_11_centos systemd[1]: Unit mongod.service entered failed state.
3月 14 21:11:18 VM_0_11_centos systemd[1]: mongod.service failed.

Answer 1

$OPTIONS这个环境变量没指定？

Answer 2

一般来说，应该先看看日志里面有输出什么错误。

tail -n100 /var/log/mongodb/mongod.log

如果什么都没有，那一般就是你的配置文件格式上有问题。直接执行看一下：

sudo -u mongod mongod /etc/mongod.conf

先试试这些再看。

Answer 3

看看这篇文章能否给你一个提示：https://stackoverflow.com/que...