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Graylog2 / graylog-ansible-role

Ansible role which installs and configures Graylog
Apache License 2.0
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Fixing mongodb error after restarting at Red Hat #114

Closed guilhermewolf closed 4 years ago

guilhermewolf commented 5 years ago

With this template for the /etc/mongod.conf file, the service starts but does not recognize the pid file and then fails in the Red Hat environment. The fix allows mongodb to parse this pid file

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malcyon commented 4 years ago

This makes MongoDB fail to start on Debian Stretch and Buster. See the Travis CI job below.

malcyon commented 4 years ago

Based on reading through https://github.com/Graylog2/graylog-ansible-role/pull/87 and https://github.com/Graylog2/graylog-ansible-role/pull/86, it sounds like forking mongodb makes it fail under systemd.

So maybe it should just never be forked.

malcyon commented 4 years ago

I'm confused, because when I test it against a local VM, I can restart the service just fine:

(venv) donald@laptop:~/src/graylog-ansible-role$ molecule login
Last login: Thu Jul 30 16:35:01 2020 from 192.168.121.1
[vagrant@instance ~]$ sudo su -
[root@instance ~]# systemctl status mongod
● mongod.service - High-performance, schema-free document-oriented database
   Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2020-07-30 16:33:22 UTC; 2min 26s ago
     Docs: https://docs.mongodb.org/manual
 Main PID: 6566 (mongod)
   CGroup: /system.slice/mongod.service
           └─6566 /usr/bin/mongod -f /etc/mongod.conf

Jul 30 16:33:22 instance systemd[1]: Starting High-performance, schema-free document-oriented database...
Jul 30 16:33:22 instance systemd[1]: Started High-performance, schema-free document-oriented database.
[root@instance ~]# systemctl restart mongod
[root@instance ~]# systemctl status mongod 
● mongod.service - High-performance, schema-free document-oriented database
   Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2020-07-30 16:35:58 UTC; 3s ago
     Docs: https://docs.mongodb.org/manual
  Process: 7835 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/SUCCESS)
  Process: 7832 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, status=0/SUCCESS)
  Process: 7831 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUCCESS)
 Main PID: 7837 (mongod)
   CGroup: /system.slice/mongod.service
           └─7837 /usr/bin/mongod -f /etc/mongod.conf

Jul 30 16:35:58 instance systemd[1]: Stopped High-performance, schema-free document-oriented database.
Jul 30 16:35:58 instance systemd[1]: Starting High-performance, schema-free document-oriented database...
Jul 30 16:35:58 instance systemd[1]: Started High-performance, schema-free document-oriented database.
[root@instance ~]# getenforce
Enforcing
[root@instance ~]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

Centos should be very similar to Redhat, from what I understand.

@mariussturm Any input here? I know it's been a couple years since you touched this.

malcyon commented 4 years ago

Closing this for lack of response. Doesn't look like forking mongodb is a good idea, and it fails most of the tests.