Tag: devops

Docker needs a daemon; Podman doesn't. Compare architecture, rootless support, Compose compatibility, and which one belongs in your workflow.

Decode the postgresql:// connection string, host, port, database, SSL mode, and the gotchas that cause connection refused at deploy time.

Zabbix is enterprise-grade monitoring that you can self-host, agents, templates, triggers, and dashboards for your entire home lab.

Talos OS is an immutable, API-driven OS designed purely for running Kubernetes, no SSH, no package manager, pure GitOps.

Monitor Linux servers with htop, iostat, netstat, vmstat, and Prometheus, pick the right tool for CPU, memory, disk, and network issues.

Your logs are in journald, not /var/log. journalctl queries that work, awk patterns that hold up, and five popular one-liners that quietly return nothing.

Move beyond single containers, Docker Compose lets you define and run multi-service apps with one YAML file and one command.

Generate code documentation with Doxygen without installing it, run it from a Docker container and get HTML docs from any codebase.

The docker compose commands you actually use daily, up, down, logs, exec, pull, and the flags that make them way more useful.

Expose Docker's Unix socket over TCP so remote tools and dashboards can connect, daemon.json config for Linux and Windows.

Service restart not showing logs? systemd hides stdout. Learn journalctl, systemctl status, and debugging workflows for silent systemd failures.

logrotate keeps your /var/log from eating the disk, configure rotation schedules, compression, and retention for any service log.