Running Docker Compose in production is a reasonable choice for a single host, but the defaults were chosen for a laptop. A walk through the failure families that actually bite: the deploy gap, unrotated logs filling the disk, anonymous volumes, published ports that bypass your firewall, secrets in environment variables, and health checks that report without acting.
A PersistentVolumeClaim sounds like paperwork. Delete one on a cluster with the default reclaim policy and the underlying disk goes with it. A short guide to the parts of Kubernetes storage that bite: reclaim policies, access modes, zone affinity and StatefulSets.
Docker containers rarely fail without leaving clues. This practical guide explores common Docker issues involving networking, storage, permissions, ports, logs, health checks, reverse proxies, and resource usage—and explains how to troubleshoot them methodically.