ItamarWMDE created this task. ItamarWMDE added projects: Wikidata, Wikidata-Query-Service, Wikidata.org, wmde-wikidata-tech, Wikidata Dev Team.
TASK DESCRIPTION **Problem:** In T331405: [SW] Query service maxlag calculation should exclude datacenters that don't receive traffic and where the updater is turned off <https://phabricator.wikimedia.org/T331405> it was concluded that utilizing a new Prometheus query in the `updateQueryServiceLag.php` maintenance script will help mitigate potential false positive alerts while switching datacenters. The new query as crafted by @dcausse in T331405#8806909 <https://phabricator.wikimedia.org/T331405#8806909> is: name=Prometheus query for maxlag calculation max(time() - label_replace(blazegraph_lastupdated, "host", "$1", "instance", "^([^:]+):.*") and on(host) label_replace(rate(org_wikidata_query_rdf_blazegraph_filters_QueryEventSenderFilter_event_sender_filter_StartedQueries{}[5m]) > 1, "host", "$1", "instance", "^([^:]+):.*")) To ensure this query is taken into account while running the maxlag updater maintenance script, the Prometheus URLs in the script should be updated. **Acceptance Criteria**: [ ] The `updateQueryServiceLag.php` is updated to take into account the new Prometheus query for maxlag calculation. TASK DETAIL https://phabricator.wikimedia.org/T336352 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: ItamarWMDE Cc: Aklapper, ItamarWMDE, dcausse, Astuthiodit_1, AWesterinen, karapayneWMDE, Invadibot, MPhamWMF, maantietaja, Akuckartz, Nandana, Namenlos314, Lahi, Gq86, Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, EBjune, merbst, LawExplorer, _jensen, rosalieper, Scott_WUaS, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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