==== Error ====
* mwversion: `1.38.0-wmf.21`
* reqId: `758cb992-d0ea-4cab-9eba-8ba30d48f191`
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2022-02-09T00:26:11.000Z',to:'2022-02-10T00:36:20.838Z'))&_a=(query:(query_string:(query:'reqId:%22758cb992-d0ea-4cab-9eba-8ba30d48f191%22'))) | Find reqId in Logstash ]]
```name=normalized_message
[{reqId}] {exception_url} Wikimedia\Rdbms\DBReadOnlyError: Database is read-only: The database is read-only until replication lag decreases.
```
```name=exception.trace,lines=10
from /srv/mediawiki/php-1.38.0-wmf.21/includes/libs/rdbms/database/Database.php(1055)
#0 /srv/mediawiki/php-1.38.0-wmf.21/includes/libs/rdbms/database/Database.php(1342): Wikimedia\Rdbms\Database->assertIsWritablePrimary()
#1 /srv/mediawiki/php-1.38.0-wmf.21/includes/libs/rdbms/database/Database.php(1293): Wikimedia\Rdbms\Database->executeQuery(string, string, integer)
#2 /srv/mediawiki/php-1.38.0-wmf.21/includes/libs/rdbms/database/Database.php(2636): Wikimedia\Rdbms\Database->query(string, string, integer)
#3 /srv/mediawiki/php-1.38.0-wmf.21/includes/libs/rdbms/database/DBConnRef.php(69): Wikimedia\Rdbms\Database->update(string, array, string, string)
#4 /srv/mediawiki/php-1.38.0-wmf.21/includes/libs/rdbms/database/DBConnRef.php(381): Wikimedia\Rdbms\DBConnRef->__call(string, array)
#5 /srv/mediawiki/php-1.38.0-wmf.21/includes/deferred/LinksUpdate/LinksUpdate.php(600): Wikimedia\Rdbms\DBConnRef->update(string, array, array, string)
#6 /srv/mediawiki/php-1.38.0-wmf.21/includes/deferred/LinksUpdate/LinksUpdate.php(301): MediaWiki\Deferred\LinksUpdate\LinksUpdate->updateLinksTimestamp()
#7 /srv/mediawiki/php-1.38.0-wmf.21/includes/deferred/LinksUpdate/LinksUpdate.php(251): MediaWiki\Deferred\LinksUpdate\LinksUpdate->doIncrementalUpdate()
#8 /srv/mediawiki/php-1.38.0-wmf.21/includes/deferred/DeferredUpdates.php(536): MediaWiki\Deferred\LinksUpdate\LinksUpdate->doUpdate()
#9 /srv/mediawiki/php-1.38.0-wmf.21/includes/deferred/RefreshSecondaryDataUpdate.php(103): DeferredUpdates::attemptUpdate(MediaWiki\Deferred\LinksUpdate\LinksUpdate, Wikimedia\Rdbms\LBFactoryMulti)
#10 /srv/mediawiki/php-1.38.0-wmf.21/includes/deferred/DeferredUpdates.php(536): RefreshSecondaryDataUpdate->doUpdate()
#11 /srv/mediawiki/php-1.38.0-wmf.21/includes/Storage/DerivedPageDataUpdater.php(1778): DeferredUpdates::attemptUpdate(RefreshSecondaryDataUpdate, Wikimedia\Rdbms\LBFactoryMulti)
#12 /srv/mediawiki/php-1.38.0-wmf.21/includes/page/WikiPage.php(2211): MediaWiki\Storage\DerivedPageDataUpdater->doSecondaryDataUpdates(array)
#13 /srv/mediawiki/php-1.38.0-wmf.21/includes/jobqueue/jobs/RefreshLinksJob.php(210): WikiPage->doSecondaryDataUpdates(array)
#14 /srv/mediawiki/php-1.38.0-wmf.21/includes/jobqueue/jobs/RefreshLinksJob.php(137): RefreshLinksJob->runForTitle(Title)
#15 /srv/mediawiki/php-1.38.0-wmf.21/extensions/EventBus/includes/JobExecutor.php(79): RefreshLinksJob->run()
#16 /srv/mediawiki/rpc/RunSingleJob.php(76): MediaWiki\Extension\EventBus\JobExecutor->execute(array)
#17 {main}
```
==== Impact ====
more than 300 errors in the last 30 min for group0/1 wikis
==== Notes ====