f7f0821e98
When running nodepool launchers in kubernetes a common method to update nodepool or its config is doing rolling restarts. The process for this is start a new nodepool, wait for it to be ready and then tear down the old instance. Currently this is not possible without risking node_failures when there is only one instance serving a label. The reason for this is that there is no reliable way to determine when the new instance is fully started which could lead to a too early tear down of the old instance. This would result in node_failures for all in-flight nore requests that are only valid for this provider. Adding a /ready endpoint to the webapp can make this deterministic using readiness checks of kubernetes. Change-Id: I53e77f3d8aaa4742ce2a89c1179e8563f850270e
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/
Getting Help
There are two Zuul-related mailing lists:
- zuul-announce
-
A low-traffic announcement-only list to which every Zuul operator or power-user should subscribe.
- zuul-discuss
-
General discussion about Zuul, including questions about how to use it, and future development.
You will also find Zuul developers in the #zuul channel on Freenode IRC.
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
Bugs are handled at: https://storyboard.openstack.org/#!/project/zuul/nodepool
Code reviews are handled by gerrit at https://review.opendev.org
After creating a Gerrit account, use git review to submit patches. Example:
# Do your commits
$ git review
# Enter your username if promptedJoin #zuul on Freenode to discuss development or usage.
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.