V0.1 · Architecture & service documentation
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Automation / FIELD NOTE 02

Configuration & delivery

Turn repeatable work into reviewed configuration, from a server baseline to an application deployment.

Ansible · Semaphore · GitDesign guide · No live telemetry

01 / PURPOSE

The problem it solves.

Reduce configuration drift and make routine changes repeatable. Git records the intended configuration, Ansible applies server configuration and Semaphore provides an execution interface.

02 / THE FLOW

How the pieces connect.

Conceptual flowSimplified flow
  1. STEP 01Change in Git
  2. STEP 02Validate in test
  3. STEP 03Run automation
  4. STEP 04Verify the service

03 / WALKTHROUGH

From intention to operation.

  1. 01

    Describe the desired state

    Keep the server baseline and reusable tasks in version control. Work in a feature branch so that the change can be inspected.

  2. 02

    Validate in a test environment

    Check syntax, confirm the intended target and test behaviour before applying the same approach to production. This is a process step, not a claim of an automatic CI gate.

  3. 03

    Execute the appropriate automation

    Use Semaphore for Ansible operations. Application delivery can also use GitHub Actions; each workflow defines its own triggers and deployment sequence.

  4. 04

    Observe the result

    Check the actual service after execution. A successful automation job proves that its steps completed, not that every user journey works.

04 / DESIGN DECISIONS

The reasoning behind it.

Why keep configuration in Git?

A diff explains what changed, and history helps reconstruct the intent. Credentials remain outside the repository.

Why reusable tasks?

One implementation is easier to maintain than several slightly different copies. Reuse still requires checking the target and impact.

05 / A CLOSER LOOK

A small, concrete example.

This illustrative example explains the structure. It is not an export of the lab configuration or a complete deployment recipe.

ILLUSTRATIVE EXAMPLE sanitised · educational
- name: Prepare an example web directory
  hosts: example_test
  tasks:
    - name: Ensure the directory exists
      ansible.builtin.file:
        path: /srv/example-web
        state: directory
        mode: "0755"
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