Maniphest T411810

WDQS: write a playbook for restarting blazegraph
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	bking
	Dec 4 2025, 6:38 PM

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Description

There have been many recent incidents for WDQS being overloaded . The band-aid fix is to restart the WDQS service on all hosts across the entire datacenter. While SREs have access to do this via cumin, SWEs do not. An ansible playbook could help SWEs (who do have shell access to the WDQS servers) restart the service safely and quickly.

Creating this ticket to:

Write an ansible playbook to restart services for WDQS
Train SWEs on its use

Event Timeline

bking created this task.Dec 4 2025, 6:38 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptDec 4 2025, 6:38 PM

bking changed the task status from Open to In Progress.Dec 4 2025, 6:38 PM

bking claimed this task.

bking triaged this task as Medium priority.

I've created this repo, which includes a playbook to restart wdqs.

bking updated the task description. (Show Details)Dec 4 2025, 6:41 PM

bking added a subscriber: gmodena.

gmodena added a project: Wikidata-Query-Service.Dec 5 2025, 8:07 AM

This is great @bking !

How do I sign up for training?

Nit: could we move the playbook to the Wikidata Platform gitlab org, once it becomes available?

Maintenance_bot added a project: Wikidata.Dec 5 2025, 8:29 AM

BTracy-WMF moved this task from Incoming to Operations/SRE on the Wikidata-Query-Service board.Dec 5 2025, 4:09 PM

@gmodena paired on the playbook today.

I think we're good, so I'm gonna close this one out. Feel free to ping me here or in Slack/IRC if you do have any other questions.

Gehel moved this task from Done to Reported on the Data-Platform-SRE (2025.11.07 - 2025.11.28) board.Dec 12 2025, 9:00 AM