Mongod service failed to start

Graylog Central (peer support)
1

please help me :sob: ; after finally managed to get the graylog working normally & receiving syslog messages; it suddenly stopped!!

after investigation i noticed that Mongod service is failed & unfortunately i could not get it up again after many trials.

N.B.: i donā€™t know if the below last changes are the reason for that or not ??

(  898  semanage port -l | grep syslog
  899  yum install semanage
  900  yum provides /usr/sbin/semanage
  901  yum provides *semanage
  902  yum whatprovides /usr/sbin/semanage
  903  yum install policycoreutils-python
  904  semanage port -l | grep syslog
  905  semanage port -a -t syslogd_port_t -p tcp 1514
  906  semanage port -l
  907  semanage port -l | grep 514
  908  semanage port -l | grep syslog
  909  semanage port -a -t syslogd_port_t -p tcp 1514
  910  semanage port -l | grep syslog
  911   
)

[root@Syslog_Trial ~]# systemctl status -l mongod.service
Ć¢ā€”Ā mongod.service - SYSV: Mongo is a scalable, document-oriented database.
   Loaded: loaded (/etc/rc.d/init.d/mongod; bad; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2017-11-21 13:27:34 EET; 52min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 1882 ExecStart=/etc/rc.d/init.d/mongod start (code=exited, status=127)

Nov 21 13:27:34 Syslog_Trial systemd[1]: Starting SYSV: Mongo is a scalable, document-oriented database....
Nov 21 13:27:34 Syslog_Trial mongod[1882]: /etc/rc.d/init.d/mongod: line 10: /etc/rc.d/init.d/functions: No such file or directory
Nov 21 13:27:34 Syslog_Trial mongod[1882]: Starting mongod: /etc/rc.d/init.d/mongod: line 69: daemon: command not found
Nov 21 13:27:34 Syslog_Trial systemd[1]: mongod.service: control process exited, code=exited status=127
Nov 21 13:27:34 Syslog_Trial systemd[1]: Failed to start SYSV: Mongo is a scalable, document-oriented database..
Nov 21 13:27:34 Syslog_Trial systemd[1]: Unit mongod.service entered failed state.
Nov 21 13:27:34 Syslog_Trial systemd[1]: mongod.service failed.

[root@Syslog_Trial ~]# journalctl -xe
..........................................
-- Subject: Unit mongod.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit mongod.service has begun starting up.
Nov 21 13:27:34 Syslog_Trial mongod[1882]: /etc/rc.d/init.d/mongod: line 10: /etc/rc.d/init.d/functions: No such file or directory
Nov 21 13:27:34 Syslog_Trial mongod[1882]: Starting mongod: /etc/rc.d/init.d/mongod: line 69: daemon: command not found
Nov 21 13:27:34 Syslog_Trial systemd[1]: mongod.service: control process exited, code=exited status=127
Nov 21 13:27:34 Syslog_Trial systemd[1]: Failed to start SYSV: Mongo is a scalable, document-oriented database..
-- Subject: Unit mongod.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit mongod.service has failed.
-- 
-- The result is failed.
Nov 21 13:27:34 Syslog_Trial systemd[1]: Unit mongod.service entered failed state.
Nov 21 13:27:34 Syslog_Trial systemd[1]: mongod.service failed.
Nov 21 13:27:34 Syslog_Trial polkitd[682]: Unregistered Authentication Agent for unix-process:1876:345640 (system bus name :1.36, o
2

Are you sure that MongoDB has been installed on that machine?

3

Yes jochen

If thereā€™s any show commands you want me to do please mention them

4

I have 1 machine carrying all services required to implement 1 independent syslog service:

Graylog, elastic search, mongodb and syslog-ng

5

can any one help me please?

6

Mohamed, this is no real-time private support.

If you require support with hard SLA, please consider buying Graylog Enterprise support: https://www.graylog.org/enterprise

7

i want to add that the mongod service became up after applying: /etc/init.d/mongod start

bur now iā€™ve another issue, that is web result in following error : ā€œServer currently unavailableā€

8

Actually Iā€™m in the beginning to try a new solution for syslog with graylog and if succeeded it will replace the legacy existing solution.

So meanwhile I am not ready for buying any SLA.

I didnā€™t ask for real time support. Iā€™m only asking for support from those who can.

9

You might have messed up the mongo db config / init files.
It might not be worth your time debugging this.

Instead, you may just take a backup of the mongo db database files and reinstall Mongo DB.
Try replacing the mongodb database files.

If that doesnā€™t work, you may start with a fresh database and start over again.

10

Thanks Sachin for you support

The mongodb service became up applying: /etc/init.d/mongod start

But there is another different issue Iā€™m. Working on and if still not solved Iā€™ll post it

Thanks

11

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