Tagged: DevOps

7 posts · browse all tags

• 13 July 2026 PythonAnsibleAutomationNetworkingDevOps

  Ansible Deep Dive Part 1: What Ansible Is, and Why Agentless Still Wins

  Kicking off a thirteen-part Ansible series. Part 1 covers what Ansible actually is, the push-based agentless model and why it still matters against Chef/Puppet/Salt, the control node/managed node mental model, installing Ansible, and your first ad-hoc command against a real inventory.

• 13 July 2026 PythonAnsibleAutomationDevOps

  Ansible Deep Dive Part 11: Error Handling in Anger — Blocks, Rescue, and Partial Failures

  Part 11: block/rescue/always for structured error handling, ignore_errors vs failed_when vs ignore_unreachable, max_fail_percentage and any_errors_fatal, and retries/until for polling a service until it's actually ready.

• 13 July 2026 PythonAnsibleAutomationDevOpsBest Practices

  Ansible Deep Dive Part 12: Best Practices — the Style Guide I Actually Follow

  Part 12: the Ansible conventions worth treating as non-negotiable — naming, idempotency discipline, directory layout, secrets, tagging restraint, testing gates, and the failure modes that show up once a project outlives its author's memory of writing it.

• 13 July 2026 PythonAnsibleAutomationDevOps

  Ansible Deep Dive Part 3: Playbooks, Tasks, and the Idempotency Contract

  Part 3: plays and tasks, modules vs shell/command, the idempotency contract that makes Ansible safe to re-run, handlers and notify, check mode and diff mode, and tags for selectively running part of a playbook.

• 13 July 2026 PythonAnsibleAutomationDevOps

  Ansible Deep Dive Part 5: Roles and Ansible Galaxy — Structuring Projects That Scale

  Part 5: the standard role directory layout, defaults vs vars, role dependencies, ansible-galaxy for installing community roles and collections, and requirements.yml for pinning what a project depends on.

• 13 July 2026 PythonAnsibleAutomationTestingDevOps

  Ansible Deep Dive Part 8: Testing Ansible — Molecule, ansible-lint, and CI Pipelines

  Part 8: ansible-lint and its rule categories, Molecule for spinning up disposable Docker/VM targets and asserting real state with Testinfra, idempotency testing (running a role twice and asserting nothing changed the second time), and wiring it all into GitHub Actions.

• 13 July 2026 PythonAnsibleAutomationLabDevOps

  Ansible Deep Dive Part 9 Lab: Zero to Production — a Three-Tier Web App From Bare Metal

  Part 9, the first lab: a role-based playbook standing up a load balancer, two app servers, and PostgreSQL from bare Ubuntu boxes — vault-protected credentials, templated HAProxy/env config, notify chains, and a rolling deploy with serial.