We had a scenario where on RHEL we couldn't start an application that had been running and we had just stopped.
sudo systemctl start myservice
We didn't have access to the
journald logs on this server, so the state of the server was a mystery.
The application instance didn't 'start' as it logs verbosely, and yet the application logs weren't touched.
My friend came along and run a puppet agent update on this box:
puppet agent --environment=production --test
After this - we could stop and start the service.
I understand that puppet has the ability to remove and create a service, and also to 'daemon-reload'. ie something like
systemctl stop [servicename] systemctl disable [servicename] rm /etc/systemd/system/[servicename] systemctl daemon-reload systemctl reset-failed
Now I'm realising in retrospect that I should have run
sudo systemctl reset-failed
I'm trying to work out what the specific thing that puppet does to get a 'stuck' service to work.
My question is: What does puppet do to fix a 'stuck' systemctl service where systemctl would refuse to start a service?