Troubleshoot Contour

This topic tells you how to troubleshoot Contour installation and configuration.

Envoy pods fail with malformed IP address errors

Symptom:

The Contour package fails to reconcile, and the Envoy pods fail with errors like:

23-11-23 01:55:11.503][1][warning][config] [source/common/config/grpc_subscription_impl.cc:128] gRPC config for type.googleapis.com/envoy.config.listener.v3.Listener rejected: Error adding/updating listener(s) ingress_http: malformed IP address: :: 

Explanation:

By default, the Contour package programs Envoy’s listeners to use IPv6 addresses. In most cases, this is OK. However, some clusters, such as TKGI, only support IPv4.

Solution:

Important

This solution only applies to Contour v1.26 or later, which is included in Tanzu Application Platform v1.8.0 and later.

To use IPv4 addresses on the listeners, update the Tanzu Application Platform values file (commonly called tap-values.yaml).

The following is an example of the Contour section of the values file:

contour:
  envoy:
    listenIPFamily: IPv4