mongod 4 and centos 7 problem

[Tim Arnold]

hi,

I can install mongodb-org.x86_64 0:4.0.0-1.el7 on my centos7 box with no error but when I try to start the mongod process, I get this:

Job for mongod.service failed because a timeout was exceeded. See "systemctl status mongod.service" and "journalctl -xe" for details.

% systemctl status mongod.service

● mongod.service - MongoDB Database Server

   Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)

   Active: failed (Result: timeout) since Fri 2018-07-27 14:18:13 UTC; 7s ago

     Docs: https://docs.mongodb.org/manual

  Process: 16525 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=0/SUCCESS)

  Process: 16521 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/SUCCESS)

  Process: 16518 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, status=0/SUCCESS)

  Process: 16515 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUCCESS)

That's not enough info for me to figure out what I should do, everything says SUCCESS.

I'm following the instructions here: https://docs.mongodb.com/master/tutorial/install-mongodb-on-red-hat/

% sudo yum install -y mongodb-org

Resolving Dependencies

--> Running transaction check

---> Package mongodb-org.x86_64 0:4.0.0-1.el7 will be installed

--> Finished Dependency Resolution

...

Installed:

  mongodb-org.x86_64 0:4.0.0-1.el7

Complete!

% sudo systemctl start mongod.service

then I get the results above.

My /etc/mongod.conf file:

---

systemLog:

  destination: file

  quiet: true

  path: /var/log/mongodb/mongod.log

  logAppend: true

storage:

  dbPath: /var/db/mongodb

  journal:

    enabled: true

processManagement:

   fork: true

net:

   bindIp: <my external ip is here, not localhost>

   port: 27017

Can you tell what's wrong? I'm at a loss. BTW, getenforce returns 'Disabled' so I guess SELinux is not the problem.

thanks,
--Tim

[Wan Bachtiar]

Can you tell what’s wrong? I’m at a loss. BTW, getenforce returns ‘Disabled’ so I guess SELinux is not the problem.

Hi Tim,

I just tried to replicate the issue on CentOS 7 (1804), but seems to work without any issue.
Check the content of the log file in /var/log/mongodb/mongod.log to see if there’s any error.

Also, I noticed from your mongod.conf file that you have database path in /var/db/mongodb. Could you make sure this directory exist and the permission is correct ? The default should be in /var/lib/mongo.

Regards,
Wan.

​

[Tim Arnold]

Hi Wan,

Thank you for taking a look. I'm using ansible (yum module) to install and I think I see what I did wrong.

I created the repo file in /etc/yum.repos.d but named it as mongodb.repo; when I changed the name to mongodb-org-4.0.repo, everything started working.

That was yesterday but it seems to be fine now. 

thanks again,

--Tim