Ansible Generator

Ansible Generator

Trigger Phrases

Use this skill when the request is to generate or scaffold Ansible content, for example:

• "Create a playbook to deploy nginx with TLS."
• "Generate an Ansible role for PostgreSQL backups."
• "Write inventory files for prod and staging."
• "Build reusable Ansible tasks for user provisioning."
• "Initialize an Ansible project with ansible.cfg and requirements.yml."
• "Give me a quick Ansible snippet to install Docker."

Do not use this skill as the primary workflow when the request is validation/debug-only (syntax errors, lint failures, Molecule/test failures). Use ansible-validator for those cases.

Deterministic Execution Flow

Run these stages in order. Do not skip a stage unless the Validation Exceptions Matrix explicitly allows it.

Stage 0: Classify Request Mode

Determine one mode first:

Stage 1: Collect Minimum Inputs

If details are missing, ask briefly. If the user does not provide them, proceed with safe defaults and state assumptions.

Stage 2: Reference Extraction Checklist

Before drafting content, extract the following from local references/templates.

Required references

• references/best-practices.md
  • Extract: FQCN requirements, idempotency rules, naming, security expectations.
• references/module-patterns.md
  • Extract: correct module/parameter patterns for the exact task type.

Required templates by output type

• Playbook: assets/templates/playbook/basic_playbook.yml
• Role: assets/templates/role/ (including meta/argument_specs.yml and molecule/default/ for test scaffolding)
• Inventory (INI): assets/templates/inventory/hosts
• Inventory (YAML): assets/templates/inventory/hosts.yml
• Project config: assets/templates/project/ansible.cfg, assets/templates/project/requirements.yml, assets/templates/project/.ansible-lint

Extraction checks

• Identify every [PLACEHOLDER] that must be replaced.
• Decide module selection priority (ansible.builtin.* first).
• Capture at least one OS-appropriate package pattern when OS-specific behavior is needed.
• Capture required prerequisites (collections, binaries, target assumptions).

Stage 3: Generate

Apply these generation standards:

1. Use FQCN module names (ansible.builtin.* first choice).
2. Keep tasks idempotent (state, creates/removes, changed_when when needed).
3. Use descriptive verb-first task names.
4. Use true/false booleans (not yes/no).
5. Add no_log: true for sensitive values.
6. Replace all placeholders before presenting output.
7. Prefer ansible.builtin.dnf for RHEL 8+/CentOS 8+ (legacy yum only for older systems).

Stage 4: Validate (Default) or Apply Exception (Fallback)

Use the matrix below to keep validation deterministic and non-blocking.

Validation Exceptions Matrix

Resource Generation Guidance

Playbooks

• Use assets/templates/playbook/basic_playbook.yml as structure.
• Include: header comments, pre_tasks/tasks/post_tasks as needed, handlers, tags.
• Add health checks when service deployment/configuration is involved.

Roles

• Build from assets/templates/role/ structure.
• Keep defaults in defaults/main.yml; keep higher-priority role vars in vars/main.yml.
• Include OS-specific vars (vars/Debian.yml, vars/RedHat.yml) when relevant.
• Add meta/argument_specs.yml for variable validation.
• Include molecule/default/ scaffold (from assets/templates/role/molecule/) for production-ready roles.

Task Files

• Keep scope narrow and reusable.
• Document required input variables in comments.
• Use conditionals for environment/OS-sensitive operations.

Inventory

• Build logical host groups and optional group hierarchies.
• Use variable layering intentionally: group_vars/all.yml -> group -> host.
• Default to INI format (hosts) for simple topologies; use YAML format (hosts.yml) when the user requests it or when the hierarchy is complex.

Project Configuration

• Provide baseline ansible.cfg, requirements.yml, and .ansible-lint.
• Keep defaults practical and editable.

Custom Modules and Collections

When the request depends on non-builtin modules/collections:

1. Identify collection + module and required version sensitivity.
2. Check local references/module-patterns.md first.
3. If still unresolved and network/tools are available, query Context7:
   • mcp__context7__resolve-library-id
   • mcp__context7__query-docs
4. If Context7 is unavailable, use official Ansible docs / Ansible Galaxy pages.
5. If external lookup is unavailable, provide a builtin fallback approach and state the limitation.

Always include collection installation guidance when collection modules are used.

Canonical Example Flows

Flow A: Full Generation (Playbook)

User prompt: "Create a playbook to deploy nginx with TLS on Ubuntu and RHEL."

1. Classify as full-generation.
2. Gather/confirm required inputs (hosts, cert paths, become, service name).
3. Extract required references (best-practices.md, module-patterns.md) and playbook template.
4. Generate complete playbook with OS conditionals (apt/dnf), handlers, validation for config templates.
5. Run ansible-validator.
6. Fix issues and rerun until checks pass (or apply matrix fallback if tooling unavailable).
7. Present output with validation summary, usage command, and prerequisites.

Flow B: Quick Snippet (Task Block)

User prompt: "Give me a snippet to create a user and SSH key."

1. Classify as snippet-only.
2. Extract minimal module patterns for ansible.builtin.user and ansible.builtin.authorized_key.
3. Generate concise snippet with FQCN, idempotency, and variable placeholders.
4. Perform inline sanity checks (YAML shape, FQCN, obvious idempotency/security).
5. Present snippet and note that full validator run was skipped due to snippet-only mode.

Output Requirements

For generated executable artifacts, use this response structure:

## Generated [Resource Type]: [Name]

**Validation Status:** [Passed / Partially validated / Skipped with reason]
- YAML syntax: [status]
- Ansible syntax: [status]
- Lint: [status]

**Summary:**
- [What was generated]
- [Key implementation choices]

**Assumptions:**
- [Defaults or inferred values]

**Usage:**
```bash
[Exact command(s)]

Prerequisites:

• [Collections, binaries, environment needs]

## Done Criteria

This skill execution is complete only when all applicable items are true:

- Trigger decision is explicit (`full-generation`, `snippet-only`, or `docs-only`).
- Required references/templates were consulted for the selected artifact type.
- Generated output has no unresolved placeholders.
- Validation followed default behavior or a documented exception from the matrix.
- Any skipped checks include a concrete reason and deferred command(s).
- Final output includes summary, assumptions, usage, and prerequisites.

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