Articles tagged "devops"
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Ansible for Linux Sysadmins: Automate Server Configuration with Playbooks (2026)
Learn Ansible for Linux sysadmins. Install Ansible, write your first playbook, use roles, manage inventory, and automate server configuration in 2026.
Docker vs Podman 2026: Which One to Use and Why (Practical Guide)
Docker vs Podman in 2026: architecture differences, security, compatibility, rootless containers, and which one to use for your use case. Practical comparison.
PostgreSQL Backup and Restore: pg_dump, pg_basebackup and Point-in-Time Recovery (2026)
Complete PostgreSQL backup and restore guide: pg_dump for logical backups, pg_basebackup for physical backups, WAL archiving, and Point-in-Time Recovery (PITR) in 2026.
Docker Compose Getting Started Guide (2026): Complete Tutorial
Docker Compose v2 getting started guide 2026. Install Compose, compose.yml structure, multi-container app with Postgres and Redis, environment variables, depends_on, and essential commands.
Docker Configuration & Troubleshooting Guide 2026
Docker configuration and troubleshooting guide 2026. Covers daemon.json, permissions, image size, networking, Compose, healthchecks, and logging drivers.
Docker Container Networking Explained (2026): Bridge, Host, Overlay
Docker container networking guide 2026. Bridge, host, none, overlay, macvlan explained with inspect commands, container-to-container communication, and expose vs publish ports.
Docker Healthcheck: Configure and Monitor Container Health (2026)
Configure Docker HEALTHCHECK in Dockerfile and Compose. Learn --interval, --timeout, --retries, health states, and how to inspect container health.
Docker Logging Drivers: Configuration and Log Management (2026)
Configure Docker logging drivers in 2026. json-file, syslog, journald, fluentd setup. docker logs command with --tail, --follow, --since. Log rotation best practices.
Fix Docker 'Permission Denied' Error (2026) — All Causes
Fix "Got permission denied while trying to connect to the Docker daemon socket" in 2026. All causes: docker group, socket permissions, rootless Docker, sudo workaround.
How to Reduce Docker Image Size: Multi-Stage Builds and Best Practices (2026)
Reduce Docker image size in 2026 with multi-stage builds, Alpine base images, .dockerignore, layer caching, RUN chaining, and the dive tool. Before/after examples included.