Creating a Custom Python Healthcheck Page for Load Balancer

Develop a custom Python healthcheck page for a load balancer.

You can create your own custom Python healthcheck page to do a more thorough check of your load balancer. Healthcheck is a library to write simple healthcheck functions you can use to monitor your application. A healthcheck page is useful for asserting that your dependencies are running correctly and your application can respond to HTTP requests.

You can use the Tornado or Flask application for creating the custom healthcheck page. The following example shows how you can configure a healthcheck page using Tornado.

import tornado.web
from healthcheck import TornadoHandler, HealthCheck, EnvironmentDump


# add your own check function to the healthcheck
def redis_available():
    client = _redis_client()
    info = client.info()
    return True, "Redis Test Pass"


health = HealthCheck(checkers=[redis_available])
app = tornado.web.Application(
    [
        ("/healthcheck", TornadoHandler, dict(checker=health)),
    ]
)