Daniel Moore c342866016 HAProxy: add support for draining connections in maintenace mode (#25887) ... * 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.		2017-08-29 07:01:52 -04:00
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ansible	HAProxy: add support for draining connections in maintenace mode (#25887)	2017-08-29 07:01:52 -04:00