Datadog custom check to publish a count of Linux oom-killer actions, for machines with systemd-journald
To use, add oom.py to your checks.d directory (probably /etc/dd-agent/checks.d) and add oom.yaml (which needs no further configuration) to your conf.d directory (probably /etc/dd-agent/conf.d).
You need to make sure that the user that runs the datadog agent can read the system journal. Adding them to the systemd-journal group should do the trick: usermod -aG systemd-journal dd-agent