How to rightsize the Kubernetes resource limits

This blog post by David de Torres Huerta discusses the intricacies of setting appropriate Kubernetes resource limits to optimize performance and prevent issues such as CPU throttling and memory starvation. The article, part of a Kubernetes capacity planning series, emphasizes the importance of detecting containers lacking resource limits and offers strategies for setting limits using Prometheus for monitoring. Two approaches are suggested: a conservative strategy, which bases limits on the maximum resource consumption observed, and an aggressive strategy, which allows for occasional spikes by setting limits at the 99th percentile. The post also addresses the risks of resource overcommitment at both the cluster and node levels, advising on strategies to maintain balance and avoid unnecessary infrastructure costs. Additionally, it highlights the utility of Sysdig's out-of-the-box Kubernetes dashboards for identifying underutilized resources and facilitating effective capacity planning without needing expert knowledge.