On Fri, Sep 7, 2018 at 1:26 AM, Pine W <[email protected]> wrote: > Thanks very much for the explanation. I have more questions but they're out > of curiosity and I don't want to "hold the train" with additional > questions. After the switchover and switchback are done, if someone writes > a blog post or report about the why and how of these events, I'd like to > read it. >
There was a blog post about the last switchover we did, I don't know whether there will be one for this time. https://blog.wikimedia.org/2017/04/18/codfw-temporary-editing-pause/ Manuel. > > Pine > ( https://meta.wikimedia.org/wiki/User:Pine ) > > > On Thu, Sep 6, 2018 at 9:22 AM Manuel Arostegui <[email protected]> > wrote: > > > On Wed, Sep 5, 2018 at 8:49 PM, Pine W <[email protected]> wrote: > > > > > Thanks as usual for these, Grace. > > > > > > I feel good if I can vaguely understand 50% of what's in these notes. > > > > > > I have an elementary question, and I hope that I'm not testing anyone's > > > patience with this question. Do the switchover/switchback issues and > > > related requests to freeze certain activities have any impact on > > > Fundraising Tech? My guess is that Fundraising Tech is making > > preparations > > > for the annual Big English banner fundraising, and in the past I > believe > > > that preparations have included low intensity banner effectiveness and > > > donation workflow/pipeline testing. I'm hoping that there are no > adverse > > > impacts from the DB issues on Fundraising Tech. > > > > > > Thanks, > > > > > > Hello, > > > > The DB freeze should not affect anything Fundraising related as they do > not > > require (as far as I have seen so far) any schema changes to be deployed > on > > core servers. > > Let me elaborate a bit more on that. > > > > During the switchover and the time that CODFW is the active datacenter, > we > > will be able to finish a bunch of tasks on, mostly, EQIAD database > masters > > ( > > https://phabricator.wikimedia.org/T189107). > > Those tasks are normally hard/risky/impossible to do whilst those masters > > are active, so we have grouped them to get them done while the those > become > > passive. > > What does this mean : "For the duration of the switchover (1 month), > please > > refrain from large db schema changes and please avoid deploying any kind > of > > new feature that requires creation of tables." > > > > It means that hopefully, we will be able to close the majority of those > > tasks as "Resolved", and those will unblock features, but we do not want > > those features to be enabled/deployed whilst we are on CODFW datacenter, > > they should be enabled or deployed once we are back on EQIAD datacenter. > > > > I hope this clarifies a bit more the idea behind that paragraph. > > > > Manuel. > > _______________________________________________ > > Wikitech-l mailing list > > [email protected] > > https://lists.wikimedia.org/mailman/listinfo/wikitech-l > _______________________________________________ > Wikitech-l mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikitech-l > _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
