Missing certificate error when sending the HEAD request - APIM 4.1.0

[Sumudu-Sahan]

Problem

When sending the HEAD request to the endpoint after adding the relevant public certificates, in an HA cluster, CP nodes are throwing the missing certificate error.

Reproducing Steps

• Configure an active-active deployment [1]
• Start both nodes and create an API via the publisher portal (Don't use the PizzaShackAPI for this). For this, use one of the nodes. (Eg: Node1)
• Under the Endpoints section, add an HTTPS backend URL.
• Then upload the public certificate of the backend URL under the General Endpoint Configurations section.
• Save the API and restart both the nodes.
• Click on the TICK icon to send the HEAD request after adding the HTTPS backend URL.
• From the node that you used to upload the backend certificate, this request will get a 200 response.
• But if you try via the other node (Eg: Node2), you will get the public certificate missing error.

Version

4.1.0