Woohoo! -- brion On Aug 5, 2014 6:54 PM, "Ori Livneh" <[email protected]> wrote:
> (apologies for cross-posting) > > On either Thursday or Friday of this week, Giuseppe Lavagetto (of the > Wikimedia TechOps team) and I are planning to migrate < > https://test.wikipedia.org/> (testwiki) to HHVM. The way testwiki is > configured makes it a natural next step on the path leading from the Beta > Cluster to production. Specifically, testwiki is served by the same > load-balancer, reverse-proxy, and database servers as the rest of > production, but it is powered by a single application server that is > segregated from the pool of servers that handle requests for all other > Wikimedia wikis. This means that if we run into stability issues with HHVM, > they will be confined to just testwiki, and will not spill over to other > sites. > > To migrate testwiki to HHVM, Giuseppe will need to take the server that > powers testwiki off-line for several hours for re-imaging. Ordinarily, we > design our infrastructure for redundancy and graceful failover, so we can > take machines offline without impacting users. But the corollary to > testwiki being a special case is that it is not configured in this way. As > I explained above, this is just as well, because it means we can perform > this work without disturbing the rest of the cluster. > > Giuseppe and I will provide additional notices via IRC and e-mail prior to > beginning this work. We know that testwiki is used by a diverse user-base > to test various MediaWiki software components and will do our best to > minimize disruption to such users. Feel free to get in touch via e-mail or > IRC (my nickname is 'ori') if you have concerns about the deployment. > > Thanks for your patience and understanding! :) > > Ori > > > _______________________________________________ > Engineering mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/engineering > > _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
