Step-by-step playbooks for when things go sideways. Interactive checklists with copy-paste commands.
Diagnose and fix a systemd service that fails to start or keeps crashing. Covers unit file inspection, dependency resolution, port conflicts, and manual testing.
Diagnose DNS resolution failures on Linux systems and Kubernetes clusters. Covers resolver config, upstream DNS, systemd-resolved, CoreDNS, and DNSSEC issues.
Diagnose and fix a Docker daemon (dockerd) that won't start. Covers configuration errors, storage driver issues, disk space, socket problems, and containerd dependency.