Troubleshooting container connectivity issues and performance hotspots in Kubernetes clusters can be a frustrating exercise in a dynamic environment where hundreds, possibly thousands of pods are continually being created and destroyed.

If you have access to the internet, it’s likely that you have already heard of the critical vulnerability in the Log4j library. A zero-day vulnerability in the Java library Log4j, with the assigned CVE code of CVE-2021-44228, has been disclosed by Chen Zhaojun, a security researcher in the Alibaba Cloud Security team. It’s got people worried—and with good reason.

Yes, you read that right – in the comfort of your own laptop, as in, the entire environment running inside your laptop! Why? Well, read on. It’s a bit of a long one, but there is a lot of my learning that I would like to share. I often find that Calico Open Source users ask me about BGP, and whether they need to use it, with a little trepidation. BGP carries an air of mystique for many IT engineers, for two reasons.

Calico is the industry standard for Kubernetes networking and security. It offers a proven platform for your workloads across a huge range of environments, including cloud, hybrid, and on-premises. Calico has had a high-quality, production-ready, performant, eBPF data plane option for some time! However, although many users are deploying it in production and benefitting, we still sometimes see users who don’t know that Calico has an eBPF data plane or feel confident deploying it, and.

Last June, Tigera announced a first for Kubernetes: supporting open-source WireGuard for encrypting data in transit within your cluster. We never like to sit still, so we have been working hard on some exciting new features for this technology, the first of which is support for WireGuard on AKS using the Azure CNI. First a short recap about what WireGuard is, and how we use it in Calico.