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Sending signal ``SIGUSR2`` to a conductor process will now trigger a drain shutdown. This is similar to a ``SIGTERM`` graceful shutdown but the timeout is determined by ``[DEFAULT]drain_shutdown_timeout`` which defaults to ``1800`` seconds. This is enough time for running tasks on existing reserved nodes to either complete or reach their own failure timeout. During the drain period the conductor needs to be removed from the hash ring to prevent new tasks from starting. Other conductors also need to not fail reserved nodes on the draining conductor which would appear to be orphaned. This is achieved by running the conductor keepalive heartbeat for this period, but setting the ``online`` state to ``False``. When this feature was proposed, SIGINT was suggested as the signal to use to trigger a drain shutdown. However this is already used by oslo_service fast exit[1] so using this for drain would be a change in existing behaviour. [1] https://opendev.org/openstack/oslo.service/src/branch/master/oslo_service/service.py#L340 Change-Id: I777898f5a14844c9ac9967168f33d55c4f97dfb9
Ironic
Team and repository tags
Overview
Ironic consists of an API and plug-ins for managing and provisioning physical machines in a security-aware and fault-tolerant manner. It can be used with nova as a hypervisor driver, or standalone service using bifrost. By default, it will use PXE and IPMI to interact with bare metal machines. Ironic also supports vendor-specific plug-ins which may implement additional functionality.
Ironic is distributed under the terms of the Apache License, Version 2.0. The full terms and conditions of this license are detailed in the LICENSE file.
Project resources
- Documentation: https://docs.openstack.org/ironic/latest
- Source: https://opendev.org/openstack/ironic
- Bugs: https://bugs.launchpad.net/ironic/+bugs
- Wiki: https://wiki.openstack.org/wiki/Ironic
- APIs: https://docs.openstack.org/api-ref/baremetal/index.html
- Release Notes: https://docs.openstack.org/releasenotes/ironic/
- Design Specifications: https://specs.openstack.org/openstack/ironic-specs/
Project status, bugs, and requests for feature enhancements (RFEs) are tracked in StoryBoard: https://storyboard.openstack.org/#!/project/943
For information on how to contribute to ironic, see https://docs.openstack.org/ironic/latest/contributor