How to open a custom port on the istio-ingressgateway
By default, when you deploy istio on a Kubernetes cluster, it will create a load balancer name istio-ingressgateway [1]. That ingress gateway is a Kubernetes's LoadBalancer resource that helps handling incoming traffic into the mesh. You can check by running this command: kubectl -n istio-system get service istio-ingressgateway The istio-ingressgateway load balancer will open a number of ports such as 80, 443, etc. If you want to open a new port on the load balancer, you can do like the following: 1. Export the current configuration of the istio-ingressgateway kubectl -n istio-system get service istio-ingressgateway -o yaml > istio_ingressgateway.yaml 2. Edit the istio_ingressgateway.yaml, add the new port you want, for example nano istio_ingressgateway.yaml ... - name: myport nodePort: 31410 port: 5000 protocol: TCP targetPort: 5000 ... 3. Apply the new configuration kubectl apply -f istio_ingress...