julio 2024 – ariel's weblog

At this point, we know how to install Cilium and create a BGP peering with our routers. Now we need to let the outside world reach our Kubernetes apps.

If you don’t have the KinD cluster with Cilium go to https://arielantigua.com/weblog/2024/07/cilium-bgp-lab-locally/

When using Cilium you can reach an application using the Pod IP address or using a LoadBalance IP assigned to a Service. In the previous article we only advertised the Pod Address to our BGP neighbors, lets add more stuff so we can be close to a real deployment.

If you already have cloned the repo, go and do a pull so you can get the new config files and other stuff in the Makefile, or better yet, go and do a new clone of the repo and start from scratch, that’s the idea of the repo!

Continuar leyendo «Cilium BGP Lab with LoadBalancing and more!»

Maybe you already know about Cilium, You don’t?
Go read https://docs.cilium.io/en/stable/overview/intro/ and come back !!

Hello again!
So now you want to learn about Cilium BGP functionality, for me this is one of the most exciting features of Cilium, maybe the reason is the addiction that I already have for BGP, who knows (AS207036). Back to the point, with Cilium you can establish a BGP session with your routers (Tor, border, or core, you decide.) and announce PodCIDR or LoadBalance for services.

For this learning exercise, we will use Kind and other tools to run a K8s cluster locally on any Linux (Windows or MacOS) machine. There is a lot of info on the internet on how to get Kind up and running and even how to install Cilium, I decided to build a collection of Cilium Labs (ciliumlabs) to speed up the process of getting a Cilium testing environment up and running.

First, go and clone the repo, all the information is on the README of each lab type, in this case, bgp/README.md is the one with the steps to get this ready, but we first need to install the prereqs. The prerequisites are listed in the main README file. In my environment, all this is met so I can proceed with the lab creation.

Continuar leyendo «Cilium BGP Lab, locally!»