Why do I get a 400 error when trying to mark Upstream targets healthy or unhealthy in Kong Manager?
Kong Manager returns a 400 no healthchecker found error when marking a target healthy or unhealthy because active health checks aren’t enabled on the upstream — the default healthy/unhealthy check intervals are 0, which disables health checks entirely.
Set Healthchecks.Active.Healthy.Interval and Healthchecks.Active.Unhealthy.Interval to a non-zero interval, then you can mark targets as healthy or unhealthy.
Get the below error when trying to mark Upstream targets healthy/unhealthy via Kong manager (this uses a PUT request to the Upstream’s health endpoint)
HTTP/1.1 400 Bad Request
{"message":"no healthchecker found for example-upstream"}Note: on a hybrid-mode Data Plane, this endpoint isn’t available at all and the request will 404, since Data Planes don’t expose this part of the Admin API. This only applies to standalone nodes or a Control Plane.
The reason to get 400 is that neither the active healthy check nor the active unhealthy check is enabled in your upstream. The default values of healthy or unhealthy check intervals are 0, which means the health checks are totally disabled.
Please set up Healthchecks.Active.Healthy.Interval and Healthchecks.Active.Unhealthy.Interval to your desired time. After that, you can mark a target as unhealthy or healthy. Besides, we’re working on a more user-friendly Kong Manager upstream dashboard to provide more instructions on it.