Operations | Monitoring | ITSM | DevOps | Cloud

Your containers are running, nd your clusters seem fine, but then you get that dreaded alert – memory pressure. Whether you're scaling up your infrastructure or just trying to keep things running smoothly, understanding pod memory usage isn't just nice to have – it's essential knowledge for any DevOps engineer worth their salt. Let's cut through the noise and get straight to what matters: practical ways to track, analyze, and fix memory issues in your Kubernetes pods.

This guide covers container port configurations in Kubernetes, explaining key concepts and practical setups. If you're setting up ports for the first time or troubleshooting connectivity issues, you'll find clear explanations and useful examples to help you navigate container networking effectively.

Docker containers continuously generate logs during operation, and without proper management, these logs can consume significant disk space, impact system performance, and create operational issues. Logrotate offers an effective solution for managing these logs in containerized environments. This guide covers the implementation of logrotate in Docker containers – from initial setup through advanced configurations that ensure stable, maintainable container deployments.

Choosing the right Container Network Interface (CNI) for Kubernetes is critical to achieving optimal performance, security, and scalability. With the launch of Canonical Kubernetes LTS (long-term support) last month, Canonical decided to integrate Cilium as the default CNI in order to reflect our commitment to delivering a modern, security-maintained, high-performance Kubernetes experience.

With the upcoming release of Calico v3.30 on the horizon, we are excited to introduce Calico Whisker, a simple yet powerful User Interface (UI) designed to enhance network observability and policy debugging. If you’ve ever struggled to make sense of network flow logs or troubleshoot policies in a complex Kubernetes cluster, Whisker is your friend!

In today’s fast-paced development landscape, containerization has become a cornerstone for deploying scalable and efficient applications. Docker, as one of the most popular container platforms, offers a robust environment for building and running containers. However, with great power comes the need for greater scrutiny, i.e., Docker monitoring or observability. Understanding Docker metrics is key to maintaining optimal performance and ensuring your containerized applications run smoothly.

We’re excited to announce Kubesleep, a smart Kubernetes operator developed by SUSE that optimizes cluster efficiency and significantly reduces infrastructure costs. Kubesleep automatically scales workloads based on actual developer activity, intelligently detecting periods of inactivity and scaling down resources to save energy and expenses. Best of all, your clusters smoothly scale back up before developers even notice.

In March 2025, Wiz researchers disclosed a set of critical vulnerabilities in the popular ingress-nginx controller for Kubernetes. Collectively referred to as IngressNightmare, these issues (CVE-2025-1097, CVE-2025-1098, CVE-2025-24513, CVE-2025-24514, and CVE-2025-1974) allow unauthenticated attackers to exploit the Ingress admission controller, potentially achieving remote code execution or escalating privileges in the cluster.

Bare metal is BACK! For years virtualization has absolutely dominated the cloud market. The market for virtualization is still 10x larger than bare metal ($8B USD vs$100B USD). But now consumers are demanding MORE for their workloads. … and the signal from the data suggest that this trend isn't going away anytime soon. If we look a bit deeper, we might see another story enabling the avalanche of (re) adoption in bare metal.

If you want to observe your entire Kubernetes environment, you need visibility into all of your resources, including storage volumes. But monitoring Kubernetes storage hasn’t always been easy, especially if you wanted to see how it related to other parts of your infrastructure.