Ansible Configuration management for various systems and services

This is the preliminary style guide for writing Ansible playbooks and roles.

• YAML files - files should use 2 space indents and end in .yml

• Use jinja variable syntax and use space around the variable name Example: {{ var }}
• Variable Naming - Variable names should adhere to the Ansible style guide: lower-case and separated by underscores. If it is a role variable, then the variable should be prefixed by the role name.
• Examples: cluster_type, moab_version
• Role Naming - Role names should be written in (lower) camel case
• Example: torqueServer
• Use YAML style blocks
• Good:
• - file: dest: "{{ test }}" src: "./foo.txt" mode: 0770 state: present user: "root" group: "wheel"
• Bad: - file: > dest={{ test }} src=./foo.txt mode=0770 state=present user=root group=wheel

• ansible_hostname
• Short host of the host
• ansible_fqdn
• Fully qualified hostname

• cluster_type
• hpc, hadoop, storage
• inventory
• Inventory type. One of: prod, dev
• dns_domain
• Network domain (e.g. arc-ts.umich.edu) ~