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* HAProxy: Support waiting for nodes to drain before maint mode A common task when working with a HAProxy-managed node is to first "drain" it and then place it into maintenance mode (to be repaired or redeployed). (Draining such a node consists of preventing new connections from being established while waiting for active sessions to expire/close.) This commit creates a new `drain' parameter for Ansible's HAProxy module, which, when set to `yes` in conjunction with `state: disabled` and `wait: yes`, causes the module to attempt to set a node to drain, wait for it to finish draining, and put the node into maintenance mode. The action is recorded as a success if these steps are completed before a maximum wait timeout is reached. Implements: https://github.com/ansible/ansible-modules-extras/issues/521 Acknowledgments: This is based on user krislindgren's pull request #21420 * Correct how drain option is handled Previously the `drain` parameter would have no effect, since the `disabled` state would still immediately place backend servers into maintenance mode. |
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| 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.
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.
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Ansible was created by Michael DeHaan (michael.dehaan/gmail/com) and has contributions from over 1000 users (and growing). Thanks everyone!
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Licence
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