On Tue, Nov 20, 2018 at 4:41 PM Mukunda Modell <mmod...@wikimedia.org> wrote: > > Despite each of our efforts, there is still a configuration error > preventing MediaWiki from working in beta. I've been stuck for several > hours now but I'm hopeful that this is the last major issue and I'm sure > it's simple for someone who understands MediaWiki internals better than I > do. Unfortunately I'm completely stumped so I could really use some help > from someone who understands the configuration of MediaWiki session storage > and the underlying object cache. > > The problem is described in https://phabricator.wikimedia.org/T210030 so I > won't repeat it here. I'll simply appeal for those of you who know > something about how "BagOStuff" is configured, please take a look at > T210030 and point me in the right direction.
The beta cluster wikis are working again. It turns out that there was some confusion when moving/removing servers because of implementation drift between our production clusters and the beta cluster. Before the move to the new region we had both "memc*" and "redis*" servers in the beta cluster project. The "memc*" servers are the equivalent of our production "mc*" servers. In production the "mc*" servers run both memcached and redis services. In the beta cluster our "memc*" servers were only providing memcached and the configuration relied on the "redis*" servers for session storage. The "redis*" servers were removed while migrating virtual machines to the eqiad1-r region under the assumption that they were legacy servers from the time when we used redis as storage for the job queue. The fix was to setup the "memc*" servers with both memcached for arbitrary data caching and redis for session storage. If you are interested in the gory details see notes left on https://phabricator.wikimedia.org/T210030. Bryan -- Bryan Davis Wikimedia Foundation <bd...@wikimedia.org> [[m:User:BDavis_(WMF)]] Manager, Technical Engagement Boise, ID USA irc: bd808 v:415.839.6885 x6855 _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikitech-l
