Outages

The goal is to make this an exhaustive list of outages and other service quality incidents. We're not exhaustive yet. Please let us know on the talk page if you have another outage that belongs on here. Brandon CS Sanders (talk) 21:36, 12 July 2015 (PDT)


 * July 12, 2015 ... duration about 24 hours ... the configuration on our session store (redis) has an as yet undiagnosed problem so redis stops accepting writes once it hits its memory limit ... so some users on some wikis were getting "Wiki uses cookies to log in users. You have cookies disabled. Please enable them and try again." errors and were unable to log in to their wiki
 * March 30, 2015 from 14:56-15:18 Pacific ... duration 24 minutes ... only wikiindex.org affected, broke the Semantic Mediawiki extensions installed by composer, it is difficult to share composer configs between wikis
 * February 2, 2015 from 18:12:29 - 19:40:23 Pacific ... duration 1:27:54 ... all wikis affected, thought to be caused by new redis caching layer deployed that day (no definitive diagnosis), caching layer reverted for further testing
 * September 27, 2014 ... routine maintenance