Optimizing Kubernetes DNS with NodeLocal DNSCache and Calico eBPF: A Practitioner's Guide
In the world of Kubernetes, optimizing cluster performance and reliability is paramount, especially when it comes to fundamental operations like DNS lookups. NodeLocal DNSCache is one such solution that helps reduce DNS latency by caching responses locally on each node. While this tool is effective in standard Kubernetes setups, complications arise when integrating it with advanced networking solutions such as eBPF-based dataplanes.