Convert YML to Wiki

Why Convert YML to Wiki?

Converting YML files to MediaWiki markup transforms machine-readable DevOps configuration data into professional wiki pages that can be published directly to any MediaWiki-powered knowledge base. YML is the standard for Docker Compose files, CI/CD pipelines, and infrastructure automation, but when teams need to document these configurations in their internal wiki, a structured conversion saves hours of manual formatting.

This conversion is invaluable for DevOps and SRE teams that maintain configuration documentation alongside their infrastructure code. Instead of manually copying YML content and reformatting it for the wiki, you can convert docker-compose.yml files, Ansible playbooks, or Helm values directly into wiki pages with proper headings, wikitables, and bulleted lists that render beautifully in MediaWiki.

Our converter maps YML structures to appropriate MediaWiki elements: top-level keys become == Level 2 == headings, nested mappings become === Level 3 === sub-headings, key-value pairs are rendered in wikitables with header rows, and sequences become bulleted (* item) or numbered (# item) lists. The resulting wikitext can be pasted directly into a wiki page edit form.

Key Benefits of Converting YML to Wiki:

• Instant Documentation: Generate wiki pages from configuration files without manual formatting
• Professional Rendering: WikiTables, headings, and lists render beautifully in MediaWiki
• Collaborative Editing: Published wiki pages support revision history and multi-user editing
• Searchable Content: Wiki pages are indexed and searchable across your knowledge base
• Cross-Referencing: Add internal links to related wiki pages and categories
• Automatic TOC: MediaWiki generates table of contents from heading hierarchy
• Operational Runbooks: Convert Ansible and Helm configurations into operational documentation

Practical Examples

Example 1: Docker Compose Service

Input YML file (docker-compose.yml):

version: "3.8"
services:
  web:
    image: nginx:latest
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./html:/usr/share/nginx/html
    restart: always

Output Wiki markup:

== Docker Compose Configuration ==
'''Version:''' 3.8

=== Services ===
==== Web ====
{| class="wikitable"
! Property !! Value
|-
| '''Image''' || <code>nginx:latest</code>
|-
| '''Restart''' || always
|}

'''Ports:'''
* <code>80:80</code>
* <code>443:443</code>

'''Volumes:'''
* <code>./html:/usr/share/nginx/html</code>

Example 2: Kubernetes Deployment

Input YML file (deployment.yml):

apiVersion: apps/v1
kind: Deployment
metadata:
  name: web-app
  labels:
    app: web
spec:
  replicas: 3
  selector:
    matchLabels:
      app: web

Output Wiki markup:

== Kubernetes Deployment ==
{| class="wikitable"
! Property !! Value
|-
| '''API Version''' || apps/v1
|-
| '''Kind''' || Deployment
|}

=== Metadata ===
{| class="wikitable"
! Property !! Value
|-
| '''Name''' || web-app
|}
'''Labels:'''
* app: web

=== Spec ===
'''Replicas:''' 3

==== Selector ====
'''Match Labels:'''
* app: web

Example 3: Ansible Playbook

Input YML file (playbook.yml):

- name: Configure Web Server
  hosts: webservers
  become: true
  tasks:
    - name: Install nginx
      apt:
        name: nginx
        state: present
    - name: Start nginx
      service:
        name: nginx
        state: started

Output Wiki markup:

== Configure Web Server ==
{| class="wikitable"
! Property !! Value
|-
| '''Hosts''' || webservers
|-
| '''Become''' || true
|}

=== Tasks ===
==== Install nginx ====
'''Module:''' apt
{| class="wikitable"
! Parameter !! Value
|-
| name || nginx
|-
| state || present
|}

==== Start nginx ====
'''Module:''' service
{| class="wikitable"
! Parameter !! Value
|-
| name || nginx
|-
| state || started
|}

Frequently Asked Questions (FAQ)

Q: What is YML format?

A: YML is the short file extension for YAML (YAML Ain't Markup Language), a human-readable data serialization standard following the YAML 1.2 specification. It is the dominant extension for Docker Compose files (docker-compose.yml), CI/CD configurations (.travis.yml, .gitlab-ci.yml), Rails configuration (database.yml), Ansible playbooks, and Helm charts. YML uses indentation-based structure with key-value pairs, sequences, and nested mappings.

Q: What is Wiki (MediaWiki) format?

A: Wiki markup (wikitext) is the text-based formatting language used by MediaWiki, the software that powers Wikipedia and thousands of other wikis. It uses conventions like == for headings, * for bullets, {| for tables, and '''triple quotes''' for bold text. Wikitext is stored as plain text and rendered into HTML pages by the MediaWiki engine, supporting features like automatic table of contents, internal links, categories, and revision history.

Q: How are YML structures mapped to wiki elements?

A: The converter maps YML elements to MediaWiki conventions: top-level keys become == Level 2 == headings, nested keys become === Level 3 === and deeper sub-headings, key-value pairs are rendered in wikitables ({| class="wikitable" ... |}), and sequences become bulleted lists (* item). This creates well-structured wiki pages with automatic table of contents.

Q: Can I paste the output directly into a MediaWiki page?

A: Yes. The output is valid MediaWiki wikitext that can be pasted directly into the edit form of any MediaWiki page. It will render with proper headings, formatted tables, bulleted lists, and bold labels. The table of contents is automatically generated from the heading hierarchy.

Q: Does the conversion work with Confluence or other wikis?

A: The output is specifically formatted for MediaWiki syntax. While some elements (headings, bullets) are similar across wiki platforms, table syntax and formatting conventions differ. For Confluence, you would need a separate converter. However, MediaWiki markup is the most widely used wiki format globally.

Q: What happens to YAML anchors and aliases?

A: YAML anchors (&) and aliases (*) are resolved during parsing. The wiki output contains fully expanded values, so inherited configurations (like database.yml using &default and *default) will show all values explicitly in each wiki section.

Q: Are YML comments preserved in the wiki output?

A: YML comments (lines starting with #) are preserved as italicized annotation text (''comment text'') in the wiki output. This ensures important documentation within your configuration files appears in the wiki page alongside the corresponding data.

Q: What happens if my YML file has syntax errors?

A: If the YML file contains syntax errors such as incorrect indentation or invalid characters, the converter will wrap the raw content in a <pre> block in the wiki output. You will still receive valid wikitext, though the structured formatting with tables and headings will not be applied.

Q: Is there a file size limit?

A: Our converter handles YML files of any reasonable size. Complex configurations with deeply nested structures, multiple services, and extensive key-value mappings are fully supported and produce well-organized wiki pages with proper heading hierarchy and tables.