Ansible 2 Ansible Galaxy 2
Jeff Geerling (geerlingguy)
Ansible St. Louis Meetup - 2016-03-09
Ansible 2 - Motivation
• Architecture overhaul
• New YAML parsing engine
• 100% backwards compatibility (playbooks)
• Ran out of Van Halen songs
Task Blocks---- hosts: all
tasks: - block: - name: Script to connect the app to a monitoring service. script: monitoring-connect.sh rescue: - name: This will only run in case of an error in the block. debug: msg="There was an error in the block." always: - name: This will always run no matter what. debug: msg="This always executes." when: ansible_os_family == 'RedHat' become: yes tags: ['monitoring', 'redhat']
(Actually) Helpful Errors
$ ansible-playbook test.yml ERROR! Syntax Error while loading YAML.
The error appears to have been in '/Users/jeff.geerling/test/test.yml':line 9, column 1, but may be elsewhere in the file depending on the exactsyntax problem.
Dynamic Includes
- include: test.yml with_items: - 1 - 2 - 3 when: runtime_variable_is_true
Execution Strategies
• Built-in:
• linear - standard one-by-one, wait for all hosts
• free - hosts go as fast as they can
New Modules
• More for OpenStack, AWS, VMware, Windows, etc
• package module!
• apk, bundler, expect, find, iptables, pear, puppet...
Variable Improvements• Settable with vars at play, block, role, task levels
• Scoped to tasks contained within
tasks: - block: - name: Script to connect the app to a monitoring service. script: monitoring-connect.sh rescue: - name: This will only run in case of an error in the block. debug: msg="There was an error in the block." vars: workspace: "/tmp"
Inventory
• Added meta: refresh_inventory to force reload
Breaking Changes
• Plugin API
• Ansible API
• Template code (doesn't turn bools/numbers into strings)
• Empty/null variables (doesn't turn into strings)
More on Ansible 2
• Ansible 2.0 Launch (Ansible Blog)
• Ansible 2.0 Changelog
• Ansible 2.0 and Windows
Galaxy 2 - Motivation
• Galaxy was more or less unchanged since launch in 2014.
• Role maintainers had to do a lot of manual work.
• Best practices started forming in the community (e.g. testing).
• 'Organizations' weren't a thing; everything namespaced to individuals.
Better metrics
• GitHub stars and watchers
• Download counts
• Travis test status built in
Better role import UX• Roles can be imported from Organizations or
individual users on GitHub. Easy as clicking 'import'
• To switch a role from username to organization, delete then import again
Better role management• Role management on Galaxy is much better
Travis CI Integration
• Use Travis CI notification: to automatically notify Galaxy on role updates and new tags:
1. Add Travis token to your Galaxy role settings
2. Enable the repo in Travis CI
3. Add notification config to .travis.yml
notifications: webhooks: https://galaxy.ansible.com/api/v1/notifications/
ansible-galaxy cli
• Role scaffold (init) includes basic Travis integration
• Better search, import, delete, setup and login
More on Galaxy 2
• Ansible Galaxy 2.0 Launches
__________ < the end! > ---------- \ ^__^ \ (oo)\_______ (__)\ )\/\ ||----w | || ||
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