Healthchecks.io is a free and open source service for monitoring your cron jobs, background processes and scheduled tasks. Before adding PagerDuty integration, please log into Healthchecks.io:
After logging in, go to the Integrations page, and click on Add Integration next to the PagerDuty integration.
Click on "Connect PagerDuty", and you will be asked to log into your PagerDuty account.
Next, PagerDuty will let set the services for this integration.
And that is all! You will then be redirected back to "Integrations" page on Healthchecks.io and see the new integration!