Maniphest T125629

Depool proxies temporarily while scap is ongoing to avoid taxing those nodes
Closed, ResolvedPublic
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	• jcrespo
	Feb 3 2016, 7:42 AM

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Description

When scap starts, depool proxies. After it completes/it fails, repool those nodes again. This will avoid or mitigate performance problems (and even unexpected unavailability) while proxies are being used for syncronization by several nodes at the same time, reducing its available CPU, disk and network bandwidth for regular mediawiki tasks.

Revisions and Commits

rMSCA Scap
	Restricted Differential Revision	rMSCA6c36daed0976 Create a wrapper around conftool for our pooling/depooling needs

Related Objects
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		Status	Subtype	Assigned	Task
		Resolved		Legoktm	T67289 Use semantic versioning scheme for WMF (all) releases
		Resolved		• GWicke	T102550 Use semantic versioning for services (for consistency with mediawiki core)
		Resolved		• mmodell	T94620 [EPIC] The future of MediaWiki deployment: Tooling
		Open	Feature	None	T22085 [scap] Local sync script on any individual server should be atomic
		Resolved		None	T125629 Depool proxies temporarily while scap is ongoing to avoid taxing those nodes
		Resolved		None	T104352 Make scap able to depool/repool servers via the conftool API
		Resolved		Joe	T73212 Make it possible to quickly and programmatically pool and depool application servers
		Resolved		None	T115899 Move scap target configuration to etcd
		Resolved		Joe	T163565 Install conftool on deployment masters

Event Timeline

• jcrespo created this task.Feb 3 2016, 7:42 AM

• jcrespo raised the priority of this task from to Needs Triage.

• jcrespo updated the task description. (Show Details)

• jcrespo added projects: Scap, Release-Engineering-Team, SRE.

• jcrespo subscribed.

Restricted Application added subscribers: StudiesWorld, Aklapper. · View Herald TranscriptFeb 3 2016, 7:42 AM

• demon triaged this task as Medium priority.Feb 3 2016, 6:31 PM

• demon subscribed.

greg added a project: scap2.Feb 10 2016, 1:23 AM

dduvall moved this task from Needs triage to MediaWiki MVP on the Scap board.Feb 12 2016, 7:52 PM

• mmodell moved this task from MediaWiki MVP to Scap3-MediaWiki-MVP on the Scap board.Mar 4 2016, 6:54 PM

• mmodell edited projects, added Scap (Scap3-MediaWiki-MVP); removed Scap.

• mmodell added a subtask: T104352: Make scap able to depool/repool servers via the conftool API.Mar 6 2016, 2:17 AM

• mmodell moved this task from Needs Triage to Experiments on the Scap (Scap3-MediaWiki-MVP) board.

greg removed a project: Release-Engineering-Team.Jun 29 2016, 11:31 PM

• demon moved this task from Experiments to Needs Triage on the Scap (Scap3-MediaWiki-MVP) board.Oct 5 2016, 4:12 PM

thcipriani moved this task from Needs Triage to Improvements on the Scap (Scap3-MediaWiki-MVP) board.Oct 5 2016, 4:18 PM

• demon added a revision: Restricted Differential Revision.Mar 15 2017, 7:37 PM

• mmodell added a parent task: T163565: Install conftool on deployment masters.Apr 21 2017, 5:16 PM

• mmodell removed a parent task: T163565: Install conftool on deployment masters.

• mmodell added a subtask: T163565: Install conftool on deployment masters.

• demon mentioned this in T163565: Install conftool on deployment masters.Apr 27 2017, 6:07 PM

Joe closed subtask T163565: Install conftool on deployment masters as Resolved.May 11 2017, 6:25 AM

• demon closed this task as Resolved by committing rMSCA6c36daed0976: Create a wrapper around conftool for our pooling/depooling needs.Jul 19 2017, 5:39 PM

• demon added a commit: rMSCA6c36daed0976: Create a wrapper around conftool for our pooling/depooling needs.

Aklapper closed subtask T104352: Make scap able to depool/repool servers via the conftool API as Resolved.May 19 2021, 10:00 AM