58cccce384
When stretching the key for vault files, use PBKDF2HMAC() from the
cryptography package instead of pycrypto. This will speed up the opening
of vault files by ~10x.
The problem is here in lib/ansible/utils/vault.py:
hash_function = SHA256
# make two keys and one iv
pbkdf2_prf = lambda p, s: HMAC.new(p, s, hash_function).digest()
derivedkey = PBKDF2(password, salt, dkLen=(2 * keylength) + ivlength,
count=10000, prf=pbkdf2_prf)
`PBKDF2()` calls a Python callback function (`pbkdf2_pr()`) 10000 times.
If one has several vault files, this will cause excessive start times
with `ansible` or `ansible-playbook` (we experience ~15 second startup
times).
Testing the original implementation in 1.9.2 with a vault file:
In [2]: %timeit v.decrypt(encrypted_data)
1 loops, best of 3: 265 ms per loop
Having a recent OpenSSL version and using the vault.py changes in this commit:
In [2]: %timeit v.decrypt(encrypted_data)
10 loops, best of 3: 23.2 ms per loop
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|---|---|---|
| bin | ||
| contrib | ||
| docs/man | ||
| docsite | ||
| examples | ||
| hacking | ||
| lib/ansible | ||
| packaging | ||
| samples | ||
| test | ||
| ticket_stubs | ||
| v1 | ||
| .coveragerc | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .travis.yml | ||
| CHANGELOG.md | ||
| CODING_GUIDELINES.md | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| ISSUE_TEMPLATE.md | ||
| Makefile | ||
| MANIFEST.in | ||
| README.md | ||
| RELEASES.txt | ||
| setup.py | ||
| test-requirements.txt | ||
| 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 http://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 decide to go with the development branch, be sure to run "git submodule update --init --recursive" after doing a checkout.
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" vs "git 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 Van Halen songs.
- The devel branch corresponds to the release actively under development.
- As of 1.8, 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