2a231a08c9
This change adds an idle state to driver providers which is used to indicate that the provider should stop performing actions that are not safe to perform while we bootstrap a second newer version of the provider to handle a config update. This is particularly interesting for the static driver because it is managing all of its state internally to nodepool and not relying on external cloud systems to track resources. This means it is important for the static provider to not have an old provider object update zookeeper at the same time as a new provider object. This was previously possible and created situtations where the resources in zookeeper did not reflect our local config. Since all other drivers rely on external state the primary update here is to the static driver. We simply stop performing config synchronization if the idle flag is set on a static provider. This will allow the new provider to take over reflecting the new config consistently. Note, we don't take other approaches and essentially create a system specific to the static driver because we're trying to avoid modifying the nodepool runtime significantly to fix a problem that is specific to the static driver. Change-Id: I93519d0c6f4ddf8a417d837f6ae12a30a55870bb
Nodepool
Nodepool is a system for managing test node resources. It supports launching single-use test nodes from cloud providers as well as managing access to pre-defined pre-existing nodes. Nodepool is part of a suite of tools that form a comprehensive test system, including Zuul.
The latest documentation for Nodepool is published at: https://zuul-ci.org/docs/nodepool/
The latest documentation for Zuul is published at: https://zuul-ci.org/docs/zuul/
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Contributing
To browse the latest code, see: https://opendev.org/zuul/nodepool To clone the latest code, use git clone https://opendev.org/zuul/nodepool
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License
Nodepool is free software, licensed under the Apache License, version 2.0.
Python Version Support
Nodepool requires Python 3. It does not support Python 2.