MONGODB_CONFIG_OVERRIDE_NOFORK after upgrade to 5.18

Jean-Francois_Lebeau · 2023-05-31T17:42:32.205Z

Hi, just updated my test server (Ubuntu 20.04) from a previous 5.x release to 5.18 and I’m now getting this error when restarting:

Environment variable MONGODB_CONFIG_OVERRIDE_NOFORK == 1, overriding “processManagement.fork” to false

Mongod is configured to run as a single-node replicaset on this server, more details here:

storage:
  dbPath: /var/lib/mongodb
  journal:
    enabled: true
  oplogMinRetentionHours: 24

systemLog:
  destination: file
  logAppend: true
  logRotate: reopen
  path: /var/log/mongodb/mongod.log

net:
  port: 27017
  bindIp: 127.0.0.1

processManagement:
  timeZoneInfo: /usr/share/zoneinfo
  fork: true
  pidFilePath: /run/mongodb/mongod.pid

replication:
  replSetName: test-replica-name

Ramachandra_Tummala · 2023-06-01T02:31:51.021Z

Jean-Francois_Lebeau:

Environment variable MONGODB_CONFIG_OVERRIDE_NOFORK == 1, overriding “processManagement.fork” to false

Check this link

stackoverflow.com

Environment variable MONGODB_CONFIG_OVERRIDE_NOFORK == 1, overriding \"processManagement.fork\" to false"

mongodb, mongoose, backend

asked by bikevit2008 on 06:12AM - 20 May 23 UTC

Jean-Francois_Lebeau · 2023-06-01T03:01:13.997Z

I saw this, but it comes with no explanation and looks like a word-around more than a proper solution.

Ramachandra_Tummala · 2023-06-01T06:28:55.409Z

What does mongod.log shows
So mongod does not start?

Jean-Francois_Lebeau · 2023-06-01T12:59:30.531Z

Mongod does start, but systemd doesn’t detect it as running so it then triggers a shutdown. I’m using the default unit file. All of this is related to the changes down starting with 5.15 related to forking.

If I remember correctly, forking was needed to achieve a sane behavior with logrotate.

Ramachandra_Tummala · 2023-06-01T13:19:45.088Z

Try to comment the fork parameter in config file and start the service
May be it is already taken care in the mongod.service

Jean-Francois_Lebeau · 2023-06-01T13:24:20.801Z

I reverted to 5.13 until I have a better understanding of this.

kevinadi · 2023-06-02T01:57:57.665Z

Hi @Jean-Francois_Lebeau

Please note that MongoDB 5.13, 5.15, and 5.18 are not official MongoDB versions. Did you mean MongoDB 5.0.18 instead?

Either way, could you post how did you install MongoDB, and whether you’re using Docker or similar?

Best regards
Kevin

Jean-Francois_Lebeau · 2023-06-02T11:21:32.230Z

Obviously I meant 5.0.x. No docker, standard Ubuntu install (apt).

5.0.13 works with the forking option, but not 5.0.18, I recall that forking was needed for logrotate.

Jessie_Woods · 2024-06-10T06:55:46.043Z

Were you able to find a resolution to this? I’m running up against the same problem. Linux Fedora standard install (dnf)