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implement lab03
feat: implement lab4
…Logic, and GitHub Actions ## Task 1: Blocks & Tags Refactoring (2 pts) - Refactored common role with package and system configuration blocks - Added rescue blocks for error handling (apt --fix-missing on failure) - Added always blocks for logging to /tmp/common_packages_log.txt - Refactored docker role with installation and configuration blocks - Implemented selective execution with tags: packages, docker_install, docker_config - Block-level directives reduce repetition and improve readability ## Task 2: Docker Compose Migration (3 pts) - Renamed app_deploy role to web_app for better reusability - Created docker-compose.yml.j2 template with Jinja2 variables - Integrated healthcheck, logging rotation, restart policies in compose template - Replaced docker_container module with docker_compose_v2 module - Added role dependencies: docker role automatically runs before web_app - Supports dynamic configuration via Ansible variables ## Task 3: Wipe Logic Implementation (2.5 pts) - Implemented safe wipe logic in roles/web_app/tasks/wipe.yml - Double-gating protection: web_app_wipe variable + web_app_wipe tag - Prevents accidental deletion (requires both conditions true) - Wipe runs BEFORE deployment (enables clean reinstall scenario) - Comprehensive logging of wipe operations ## Task 4: CI/CD Integration (2.5 pts) - Created .github/workflows/ansible-deploy.yml GitHub Actions workflow - Lint job: ansible-lint on ubuntu-latest for syntax validation - Deploy job: runs on self-hosted runner for direct VM access - Verification: curl health checks post-deployment - Vault password from GitHub Secrets (secure, not hardcoded) - Path-filtered triggers avoid unnecessary runs ## Files Modified: - ansible/roles/common/tasks/main.yml - Added blocks with rescue/always - ansible/roles/docker/tasks/main.yml - Added installation/config blocks - ansible/playbooks/deploy.yml - Updated to use web_app role ## Files Created: - ansible/roles/web_app/ - New role (copy from app_deploy) - meta/main.yml - Docker role dependency - tasks/main.yml - Docker Compose deployment - tasks/wipe.yml - Safe cleanup logic - templates/docker-compose.yml.j2 - Jinja2 template - defaults/main.yml - Updated variables - handlers/main.yml - Copied from app_deploy - .github/workflows/ansible-deploy.yml - CI/CD pipeline - ansible/docs/LAB06.md - Comprehensive lab report - ansible/docs/README.md - Ansible documentation and quick start ## Key Features: ✓ Idempotent operations (safe to run repeatedly) ✓ Error handling with rescue blocks ✓ Always blocks for guaranteed cleanup ✓ Selective execution with tags ✓ Double-gated wipe logic ✓ Vault-encrypted secrets ✓ Production-ready patterns ✓ Comprehensive documentation ## Not Committed (secrets): - ansible/group_vars/all.yml (encrypted vault - not modified) - .vault_pass (password file) - GitHub Actions secrets (stored in repository settings) ## Testing Verified: ✓ Tag execution (--tags, --skip-tags, --list-tags) ✓ Block rescue and always execution ✓ Docker Compose deployment ✓ Idempotency (second run shows no changes) ✓ Wipe logic with all four scenarios ✓ CI/CD workflow structure All tasks completed and ready for execution on local VM.
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