This commit also adds a new test script (ansible-var-precedence-check.py in code-smell/) to provide us with another line of defense against precedence bugs going forward. The precedence docs state that the INI vars have a lower precedence than group/host vars files for inventory and playbooks, however that has not been the case since 2.0 was released. This change fixes that in one way, though not exactly as the docs say. The rules are: 1) INI/script < inventory dir < playbook dir 2) "all" group vars < other group_vars < host_vars So the new order will be (from the test script mentioned above): 8. pb_host_vars_file - var in playbook/host_vars/host 9. ini_host_vars_file - var in inventory/host_vars/host 10. ini_host - host var inside the ini 11. pb_group_vars_file_child - var in playbook/group_vars/child 12. ini_group_vars_file_child - var in inventory/group_vars/child 13. pb_group_vars_file_parent - var in playbook/group_vars/parent 14. ini_group_vars_file_parent - var in inventory/group_vars/parent 15. pb_group_vars_file_all - var in playbook/group_vars/all 16. ini_group_vars_file_all - var in inventory/group_vars/all 17. ini_child - child group var inside the ini 18. ini_parent - parent group var inside the ini 19. ini_all - all group var inside the ini Fixes #21845 |
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.github | ||
bin | ||
contrib | ||
docs | ||
examples | ||
hacking | ||
lib/ansible | ||
packaging | ||
test | ||
ticket_stubs | ||
.coveragerc | ||
.gitattributes | ||
.gitignore | ||
.gitmodules | ||
.mailmap | ||
.yamllint | ||
ansible-core-sitemap.xml | ||
CHANGELOG.md | ||
CODING_GUIDELINES.md | ||
CONTRIBUTING.md | ||
COPYING | ||
Makefile | ||
MANIFEST.in | ||
MODULE_GUIDELINES.md | ||
README.md | ||
RELEASES.txt | ||
requirements.txt | ||
ROADMAP.rst | ||
setup.py | ||
shippable.yml | ||
tox.ini | ||
VERSION |
Ansible
Ansible is a radically simple IT automation system. It handles configuration-management, application deployment, cloud provisioning, ad-hoc task-execution, and multinode orchestration - including trivializing things like zero downtime rolling updates with load balancers.
Read the documentation and more at https://ansible.com/
Many users run straight from the development branch (it's generally fine to do so), but you might also wish to consume a release.
You can find instructions here for a variety of platforms.
If you want to download a tarball of a release, go to releases.ansible.com, though most users use yum
(using the EPEL instructions linked above), apt
(using the PPA instructions linked above), or pip install ansible
.
Design Principles
- Have a dead simple setup process and a minimal learning curve
- Manage machines very quickly and in parallel
- Avoid custom-agents and additional open ports, be agentless by leveraging the existing SSH daemon
- Describe infrastructure in a language that is both machine and human friendly
- Focus on security and easy auditability/review/rewriting of content
- Manage new remote machines instantly, without bootstrapping any software
- Allow module development in any dynamic language, not just Python
- Be usable as non-root
- Be the easiest IT automation system to use, ever.
Get Involved
- Read Community Information for all kinds of ways to contribute to and interact with the project, including mailing list information and how to submit bug reports and code to Ansible.
- All code submissions are done through pull requests. Take care to make sure no merge commits are in the submission, and use
git rebase
vsgit merge
for this reason. If submitting a large code change (other than modules), it's probably a good idea to join ansible-devel and talk about what you would like to do or add first and to avoid duplicate efforts. This not only helps everyone know what's going on, it also helps save time and effort if we decide some changes are needed. - Users list: ansible-project
- Development list: ansible-devel
- Announcement list: ansible-announce - read only
- irc.freenode.net: #ansible
Branch Info
- Releases are named after Led Zeppelin songs. (Releases prior to 2.0 were named after Van Halen songs.)
- The devel branch corresponds to the release actively under development.
- For releases 1.8 - 2.2, modules are kept in different repos, you'll want to follow core and extras
- Various release-X.Y branches exist for previous releases.
- We'd love to have your contributions, read Community Information for notes on how to get started.
Authors
Ansible was created by Michael DeHaan (michael.dehaan/gmail/com) and has contributions from over 1000 users (and growing). Thanks everyone!
Ansible is sponsored by Ansible, Inc
Licence
GNU Click on the Link to see the full text.