How to create a health check script for your application

You can create workload or application health check scripts in the text editor of your choice. Save the scripts in the /etc/greenboot/check/required.d directory.

When a script in the /etc/greenboot/check/required.d directory exits with an error, greenboot triggers a reboot in an attempt to heal the system.

Note

Any script in the /etc/greenboot/check/required.d directory triggers a reboot if it exits with an error.

If your health check logic requires any post-check steps, you can also create additional scripts and save them in the relevant greenboot directories. For example:

  • You can also place shell scripts you want to run after a boot has been declared successful in /etc/greenboot/green.d.

  • You can place shell scripts you want to run after a boot has been declared failed in /etc/greenboot/red.d. For example, if you have steps to heal the system before restarting, you can create scripts for your use case and place them in the /etc/greenboot/red.d directory.

← Previous: How to use the MicroShift health check command | ↑ Up: Maintain system health with the greenboot health check framework | ⌂ Home: Red Hat build of MicroShift | Next: Workload max duration or timeout script example →