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Introduce WG Checkpoint Restore
Signed-off-by: Adrian Reber <areber@redhat.com>
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‎OWNERS_ALIASES

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- mwielgus
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- soltysh
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- swatisehgal
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wg-checkpoint-restore-leads:
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- adrianreber
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- haircommander
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- rst0git
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- viktoriaas
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wg-data-protection-leads:
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- xing-yang
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- yuxiangqian

‎sig-api-machinery/README.md

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## Working Groups
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The following [working groups][working-group-definition] are sponsored by sig-api-machinery:
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* [WG Checkpoint Restore](/wg-checkpoint-restore)
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* [WG Structured Logging](/wg-structured-logging)
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‎sig-auth/README.md

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- [@kubernetes/sig-auth-test-failures](https://github.com/orgs/kubernetes/teams/sig-auth-test-failures) - Test Failures and Triage
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- Steering Committee Liaison: Patrick Ohly (**[@pohly](https://github.com/pohly)**)
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## Working Groups
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The following [working groups][working-group-definition] are sponsored by sig-auth:
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* [WG Checkpoint Restore](/wg-checkpoint-restore)
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## Subprojects
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The following [subprojects][subproject-definition] are owned by sig-auth:

‎sig-cli/README.md

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## Working Groups
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The following [working groups][working-group-definition] are sponsored by sig-cli:
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* [WG Checkpoint Restore](/wg-checkpoint-restore)
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* [WG Node Lifecycle](/wg-node-lifecycle)
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‎sig-list.md

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| Name | Label | Stakeholder SIGs |Organizers | Contact | Meetings |
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|------|-------|------------------|-----------|---------|----------|
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|[Batch](wg-batch/README.md)|[batch](https://github.com/kubernetes/kubernetes/labels/wg%2Fbatch)|* Apps<br>* Autoscaling<br>* Node<br>* Scheduling<br>|* [Kevin Hannon](https://github.com/kannon92), Red Hat<br>* [Marcin Wielgus](https://github.com/mwielgus), Google<br>* [Maciej Szulik](https://github.com/soltysh), Defense Unicorns<br>* [Swati Sehgal](https://github.com/swatisehgal), Red Hat<br>|* [Slack](https://kubernetes.slack.com/messages/wg-batch)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-batch)|* Regular Meeting ([calendar](https://calendar.google.com/calendar/embed?src=8ulop9k0jfpuo0t7kp8d9ubtj4%40group.calendar.google.com)): [Thursdays (starting February 15th 2024)s at 3PM CET (Central European Time) (monthly)](https://zoom.us/j/98329676612?pwd=c0N2bVV1aTh2VzltckdXSitaZXBKQT09)<br>
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|[Checkpoint Restore](wg-checkpoint-restore/README.md)|[checkpoint-restore](https://github.com/kubernetes/kubernetes/labels/wg%2Fcheckpoint-restore)|* API Machinery<br>* Auth<br>* CLI<br>* Node<br>* Scheduling<br>|* [Adrian Reber](https://github.com/adrianreber), Red Hat<br>* [Peter Hunt](https://github.com/haircommander), Red Hat<br>* [Radostin Stoyanov](https://github.com/rst0git), University of Oxford<br>* [Viktória Spišaková](https://github.com/viktoriaas), Masaryk University<br>|* [Slack](https://kubernetes.slack.com/messages/wg-checkpoint-restore)<br>* [Mailing List](https://groups.google.com/forum/#!forum/kubernetes-wg-checkpoint-restore)|
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|[Data Protection](wg-data-protection/README.md)|[data-protection](https://github.com/kubernetes/kubernetes/labels/wg%2Fdata-protection)|* Apps<br>* Storage<br>|* [Xing Yang](https://github.com/xing-yang), VMware<br>* [Xiangqian Yu](https://github.com/yuxiangqian), Google<br>|* [Slack](https://kubernetes.slack.com/messages/wg-data-protection)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-data-protection)|* Regular WG Meeting: [Wednesdays at 9:00 PT (Pacific Time) (bi-weekly)](https://zoom.us/j/6933410772)<br>
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|[Device Management](wg-device-management/README.md)|[device-management](https://github.com/kubernetes/kubernetes/labels/wg%2Fdevice-management)|* Architecture<br>* Autoscaling<br>* Network<br>* Node<br>* Scheduling<br>|* [John Belamaric](https://github.com/johnbelamaric), Google<br>* [Kevin Klues](https://github.com/klueska), NVIDIA<br>* [Patrick Ohly](https://github.com/pohly), Intel<br>|* [Slack](https://kubernetes.slack.com/messages/wg-device-management)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-device-management)|* Regular WG Meeting (Asia/Europe): [Wednesdays at 9:00 CET (Central European Time) (biweekly)](https://zoom.us/j/97238699195?pwd=cy9IMm1ZeERtRlJ3VS8yWUxHUWIrQT09)<br>* Regular WG Meeting (Europe/America): [Tuesdays at 8:30 PT (Pacific Time) (biweekly)](https://zoom.us/j/97238699195?pwd=cy9IMm1ZeERtRlJ3VS8yWUxHUWIrQT09)<br>
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|[etcd Operator](wg-etcd-operator/README.md)|[etcd-operator](https://github.com/kubernetes/kubernetes/labels/wg%2Fetcd-operator)|* Cluster Lifecycle<br>* etcd<br>|* [Benjamin Wang](https://github.com/ahrtr), VMware<br>* [Ciprian Hacman](https://github.com/hakman), Microsoft<br>* [Josh Berkus](https://github.com/jberkus), Red Hat<br>* [James Blair](https://github.com/jmhbnz), Red Hat<br>* [Justin Santa Barbara](https://github.com/justinsb), Google<br>|* [Slack](https://kubernetes.slack.com/messages/wg-etcd-operator)<br>* [Mailing List](https://groups.google.com/a/kubernetes.io/g/wg-etcd-operator)|* Regular WG Meeting: [Tuesdays at 11:00 PT (Pacific Time) (bi-weekly)](https://zoom.us/my/cncfetcdproject)<br>

‎sig-node/README.md

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The following [working groups][working-group-definition] are sponsored by sig-node:
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* [WG Batch](/wg-batch)
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* [WG Checkpoint Restore](/wg-checkpoint-restore)
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* [WG Device Management](/wg-device-management)
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* [WG Node Lifecycle](/wg-node-lifecycle)
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* [WG Serving](/wg-serving)

‎sig-scheduling/README.md

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The following [working groups][working-group-definition] are sponsored by sig-scheduling:
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* [WG Batch](/wg-batch)
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* [WG Checkpoint Restore](/wg-checkpoint-restore)
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* [WG Device Management](/wg-device-management)
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* [WG Node Lifecycle](/wg-node-lifecycle)
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* [WG Serving](/wg-serving)

‎sigs.yaml

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liaison:
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github: aojea
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name: Antonio Ojea
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- dir: wg-checkpoint-restore
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name: Checkpoint Restore
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mission_statement: >
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This working group aims to provide a central location for the community to discuss
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the integration of Checkpoint/Restore functionality into Kubernetes.
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charter_link: charter.md
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stakeholder_sigs:
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- API Machinery
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- Auth
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- CLI
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- Node
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- Scheduling
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label: checkpoint-restore
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leadership:
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chairs:
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- github: adrianreber
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name: Adrian Reber
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company: Red Hat
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email: areber@redhat.com
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- github: haircommander
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name: Peter Hunt
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company: Red Hat
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email: pehunt@redhat.com
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- github: rst0git
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name: Radostin Stoyanov
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company: University of Oxford
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email: radostin.stoyanov@eng.ox.ac.uk
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- github: viktoriaas
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name: Viktória Spišaková
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company: Masaryk University
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email: spisakova@ics.muni.cz
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meetings: []
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contact:
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slack: wg-checkpoint-restore
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mailing_list: https://groups.google.com/forum/#!forum/kubernetes-wg-checkpoint-restore
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- dir: wg-data-protection
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name: Data Protection
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mission_statement: >

‎wg-checkpoint-restore/README.md

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<!---
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This is an autogenerated file!
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Please do not edit this file directly, but instead make changes to the
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sigs.yaml file in the project root.
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To understand how this file is generated, see https://git.k8s.io/community/generator/README.md
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--->
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# Checkpoint Restore Working Group
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This working group aims to provide a central location for the community to discuss the integration of Checkpoint/Restore functionality into Kubernetes.
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The [charter](charter.md) defines the scope and governance of the Checkpoint Restore Working Group.
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## Stakeholder SIGs
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* [SIG API Machinery](/sig-api-machinery)
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* [SIG Auth](/sig-auth)
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* [SIG CLI](/sig-cli)
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* [SIG Node](/sig-node)
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* [SIG Scheduling](/sig-scheduling)
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## Organizers
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* Adrian Reber (**[@adrianreber](https://github.com/adrianreber)**), Red Hat
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* Peter Hunt (**[@haircommander](https://github.com/haircommander)**), Red Hat
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* Radostin Stoyanov (**[@rst0git](https://github.com/rst0git)**), University of Oxford
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* Viktória Spišaková (**[@viktoriaas](https://github.com/viktoriaas)**), Masaryk University
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## Contact
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- Slack: [#wg-checkpoint-restore](https://kubernetes.slack.com/messages/wg-checkpoint-restore)
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- [Mailing list](https://groups.google.com/forum/#!forum/kubernetes-wg-checkpoint-restore)
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- [Open Community Issues/PRs](https://github.com/kubernetes/community/labels/wg%2Fcheckpoint-restore)
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<!-- BEGIN CUSTOM CONTENT -->
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<!-- END CUSTOM CONTENT -->

‎wg-checkpoint-restore/charter.md

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# WG Checkpoint Restore Charter
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This charter adheres to the conventions described in the [Kubernetes Charter README] and uses
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the Roles and Organization Management outlined in [sig-governance].
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## Scope
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The Checkpoint/Restore Working Group aims to solve the problem of transparently
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checkpointing and restoring workloads in Kubernetes, a functionality discussed
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for over five years. The group will deliver the design and implementation of
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Checkpoint/Restore functionality in Kubernetes, serving as a central hub for
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community information and discussion. This initiative addresses a wide range of
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problems, including fault tolerance, improved resource utilization, and
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accelerated application startup times.
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### In scope
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- Identify core Kubernetes checkpoint/restore use cases (e.g., live migration,
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fault tolerance, debugging, snapshotting) and gather stakeholder requirements.
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- Investigate and propose Kubernetes APIs for checkpoint/restore operations.
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- Work with SIGs for the best integration of checkpoint/restore functionality
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and APIs.
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- Provide guidance for developers on checkpoint-friendly app design and
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recommendations for operators on feature management.
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- Work closely with relevant upstream projects (CRI-O, containerd, CRIU)
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for alignment and integration.
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- Revisit the existing implementations to find and remedy possible inefficiencies.
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One example is the existing checkpoint archive format which has already been
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identified as being a major source of slowdown.
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### Out of scope
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- Not focused on general OS-level checkpointing outside Kubernetes
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pods/containers.
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- Will not dictate internal application checkpointing logic; focuses on
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Kubernetes platform orchestration of *container/pod state.
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## Stakeholders
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Stakeholders in this working group span multiple SIGs that own parts of the
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code in core kubernetes components and addons.
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- SIG CLI
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- SIG API Machinery
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- SIG Node
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- SIG Scheduling
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- SIG Auth
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## Deliverables
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The list of deliverables include the following high level features:
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- In the early stage, we mainly want to offer a well-defined location for the
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community to find information, ask questions, and discuss the next steps of
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enabling checkpoint and restore in Kubernetes.
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Later:
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- Ability to checkpoint and restore a container using kubectl
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- Ability to checkpoint and restore a pod using kubectl
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- Integration of container/pod checkpointing in scheduling decisions
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## Roles and Organization Management
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This WG adheres to the Roles and Organization Management outlined in [wg-governance]
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and opts-in to updates and modifications to [wg-governance].
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[wg-governance]: /committee-steering/governance/wg-governance.md
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Additionally, the WG commits to:
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- maintain a solid communication line between the Kubernetes groups and the
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wider CNCF community
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- submit a proposal to the KubeCon/CloudNativeCon maintainers track
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## Timelines and Disbanding
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As a first mandate, the WG will define a roadmap and tasks in the first quarter
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of operation.
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After that the WG will distribute the different tasks to different community
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members to define possible APIs and how it can be integrated in Kubernetes.
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Achieving the aforementioned deliverables, also mentioned in the `In Scope`
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section, will allow us to decide when to disband this WG. There is no
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expectations that the Working Group will be converted into a SIG long term.
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[sig-governance]: https://github.com/kubernetes/community/blob/master/committee-steering/governance/sig-governance.md
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[Kubernetes Charter README]: https://github.com/kubernetes/community/blob/master/committee-steering/governance/README.md

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