Migrating legacy PHP monolith apps on Drupal 8 to Kubernetes

This article details a successful migration of several high-traffic Drupal 8 websites from a traditional monolithic server setup to a cloud-based Kubernetes environment. The move addressed issues like single-point-of-failure, lack of automation, and high infrastructure costs by leveraging Kubernetes’ autoscaling and self-healing capabilities. While acknowledging alternative solutions, the authors highlight Kubernetes as a long-term, standardized approach to maintaining and scaling these legacy applications, focusing on building custom Docker images and utilizing tools like werf and Helm charts for a streamlined and efficient deployment.