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https://ovirt-jira.atlassian.net/browse/OVIRT-2254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=37270#comment-37270
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Barak Korren commented on OVIRT-2254:
-------------------------------------
Some design details:
* The "borrow" job takes the following parameters:
** The IP and JNLP port of the Jenkins that is borrowing the slave
** The JNLP secret to register to the Jenkins that is borrowing the slave
** A YAML/JSON structure with node requirements that includes:
*** A *kind* field set to "{{stdci_node_req}}"
*** An *apiVersion* field set to "{{1}}".
*** The project *name*.
*** The project *clone_ur*, *branch* and *refspec*.
*** The STDCI thread *stage*, *substage*, *distro* and *arch*.
*** The STDCI *runtime_requirements*.
> Create slave borrowing flow
> ---------------------------
>
> Key: OVIRT-2254
> URL: https://ovirt-jira.atlassian.net/browse/OVIRT-2254
> Project: oVirt - virtualization made easy
> Issue Type: New Feature
> Components: Jenkins Master, Jenkins Slaves
> Reporter: Barak Korren
> Assignee: infra
>
> Create a set of jobs and groovy functions that will enable one Jenkins master
> to borrow slaves from another Jenkins master.
> h3. Acceptance criteria
> # We define a borrower and a borrowing Jenkins instances. Ans support the use
> case where both are the same instance
> # Borrowing is done by setting up a JNLP connection from the slave of the
> borrower instance to to borrowing instance.
> # On the borrower instance:
> ## We have a "borrow" job that:
> ##* Takes slave requirement details, allocates a matching slaves and make it
> connect via JNLP to the borrowing instance
> ##* If all matching slaves are already borrowed by other instances, try to
> call the garbage collector jobs (see below) on borrowing instances to free
> the slaves.
> ## We have a "return" job that is called by a borrowing instance to return a
> slave
> # On the borrowing instance
> ## STDCI tries to borrow slaves from a predefined instance if not matching
> slaves are available locally
> ## Once borrowed - slaves stay attached to the borrowing instance so they can
> be reused by other STDCI jobs.
> ## We have a "garbage collector" job that is triggered periodically or by the
> borrower instance. It looks at borrowed slaves, and frees ones that were not
> used recently.
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