Defines a recurring health check request for its backend. Results can be obtained via the
Changes in health states and related requests will be logged. Default User-Agent will be
Couper / <version> health-check if not provided
headers attribute. An unhealthy backend will return with a
One of wanted response status codes.
Text which the response body must contain.
Failed checks needed to consider backend unhealthy.
Request HTTP header fields.
Time interval for recheck.
URL path with query on backend host.
Maximum allowed time limit which is bounded by