How to achieve Clinet IP based routing using Istio features?

Networking
1

Hi all, I am trying to achieve Client IP based routing using Istio features. I have two versions of application V1(Stable) and V2(Canary). I want to route the traffic to the canary version(V2) of the application if the Client IP is from a particular CIDR block (Mostly the CIDR my org) and all other traffic should be routed to the stable version(V1) which is the live traffic.

I am not able to find any possible ways to achieve this. Any kind of help will be appreciated!!

2

Hi,

Check the docs here on how to preserve the original source IP address – in short, Envoy can include the client IP address in a header called X-Envoy-External-Address. You could then extract that header in your virtualservice and do a regex match for example to route to v1 or v2.