'Health check in Cloud Foundry

Does anyone know how I can tell my cloud foundry instance to monitor my health endpoint, so that when my health endpoint says that the app health is not status: UP, that the app is restarted?

cloud-foundry


Solution 1:[1]

The cf CLI 6.24.0 (released Feb 2017) exposed this type of health checking.
In your app manifest, use:

applications:
- name: myapp
  health-check-type: http
  health-check-http-endpoint: /admin/health

Your app needs to return a 200 status code from that path, or an error code when it's not status UP.

You can also use the cf set-health-check command to configure it on existing apps.

Check out this documentation for more details on the different health check types.

Solution 2:[2]

If an app instance dies, Cloud Foundry, by default, will new up a new instance and try to start it. That resiliency is built into Cloud Foundry.

Actuators are rest end points auto injected in your app that allow you to see the app's status and health at runtime. https://spring.io/guides/gs/actuator-service/

Try Actuators out.

Solution 3:[3]

I don't believe that custom url health checking is available to day in CF. If your application instance is no longer healthy and you want to restart it you can System.exit(1) and CF will restart it for you.

I've heard rumors of custom health checks possibly coming in the future with the CC V3 api and Diego.

Solution 4:[4]

the way to do health check in PCF

cf set-health-check APP-NAME <HEALTH-CHECK-TYPE> --endpoint <CUSTOM-HTTP-ENDPOINT>

HEALTH-CHECK-TYPE = process | port | http ( ideally http for web apps )

CUSTOM-HTTP-ENDPOINT = /health

Reference: https://docs.cloudfoundry.org/devguide/deploy-apps/healthchecks.html

Sources

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Source: Stack Overflow

Solution Source
Solution 1 dkoper
Solution 2 K.AJ
Solution 3 youngm
Solution 4

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