Mongo fails to start after Xenial upgrade

Question

I've just completed upgrading my DigitalOcean droplet from Ubuntu 14.04 to 16.04, but now I'm having trouble starting mongodb. This is the error I receive when trying to start the service:

# systemctl status mongod.service
● mongod.service
   Loaded: loaded (/etc/init.d/mongod; bad; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2019-02-16 12:49:28 EST; 17s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 3800 ExecStart=/etc/init.d/mongod start (code=exited, status=1/FAILURE)

Feb 16 12:49:28 anthony-calandra mongod[3800]: Rather than invoking init scripts through /etc/init.d, use the service(8)
Feb 16 12:49:28 anthony-calandra mongod[3800]: utility, e.g. service mongod start
Feb 16 12:49:28 anthony-calandra mongod[3800]: initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connec
Feb 16 12:49:28 anthony-calandra mongod[3800]: Since the script you are attempting to invoke has been converted to an
Feb 16 12:49:28 anthony-calandra mongod[3800]: Upstart job, you may also use the start(8) utility, e.g. start mongod
Feb 16 12:49:28 anthony-calandra mongod[3800]: start: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connecti
Feb 16 12:49:28 anthony-calandra systemd[1]: mongod.service: Control process exited, code=exited status=1
Feb 16 12:49:28 anthony-calandra systemd[1]: Failed to start mongod.service.
Feb 16 12:49:28 anthony-calandra systemd[1]: mongod.service: Unit entered failed state.
Feb 16 12:49:28 anthony-calandra systemd[1]: mongod.service: Failed with result 'exit-code'.

If you need any more information please let me know.

score 0 · Answer 1 · answered Feb 16 '19 at 18:14

Solved my issue. I had a strange installation of mongo so instead I removed it:

sudo apt-get purge mongodb-org*

Then I followed this tutorial to install the latest: https://www.digitalocean.com/community/tutorials/how-to-install-mongodb-on-ubuntu-16-04

I then ran into the error message: "Failed to start mongod.service: Unit mongod.service not found". Turns out the service was disabled so I followed this guide: https://stackoverflow.com/a/53553652/3229983.

Service looked good:

# sudo systemctl status mongod
● mongod.service - High-performance, schema-free document-oriented database
   Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
   Active: active (running) since Sat 2019-02-16 13:08:19 EST; 7s ago
     Docs: https://docs.mongodb.org/manual
 Main PID: 5711 (mongod)
   CGroup: /system.slice/mongod.service
           └─5711 /usr/bin/mongod --quiet --config /etc/mongod.conf

Feb 16 13:08:19 anthony-calandra systemd[1]: Started High-performance, schema-free document-oriented database.

And now my webapp runs.

Mongo fails to start after Xenial upgrade

1 Answers1