We followed below link to setup WSo2 API manager 3.2.0 in kubernetes setup, we didnt configure analytics and we used persistent volumes for mysql and API Manager.
https://github.com/wso2/kubernetes-apim/blob/3.2.x/simple/kubernetes-apim/wso2apim-deployment.yaml
whenever we try to login publisher and devportal it is redirecting login url along with port( we configured callback urls in /carbon portal without ports).
it should be redirecting to https://wso2apim/authenticationendpoint/login.do, but it is redirecting to https://wso2apim:9443/authenticationendpoint/login.do
You need to set proxy ports as follows in the deployment toml.
[transport.https.properties]
proxyPort = 443