Not so far ago, I was faced with a quite unusual task of configuring routing for MetalLB. All would be nothing, since MetalLB usually does not require any additional configuration from user side, but in our case there is a fairly large cluster with a quite simple network configuration.
In this article I will show you how to configure source-based and policy-based routing for the external network on your cluster.
I will not dwell on installing and configuring MetalLB in detail, as I assume you already have some experience. Let’s understand the essence and configure the routing. So we have four cases:
