Reminder that this is happening today in around 30 minutes.
> On Oct 20, 2020, at 1:13 PM, Brooke Storm <[email protected]> wrote: > > On Tuesday 2020-10-27 at 1600 UTC, ToolsDB, the user database service > provided by Toolforge > (https://wikitech.wikimedia.org/wiki/Help:Toolforge/Database#User_databases > <https://wikitech.wikimedia.org/wiki/Help:Toolforge/Database#User_databases>) > will see some service interruption from restarts and will be set to read-only > mode during a scheduled failover. The failover must be done to protect data > and minimize downtime while the hypervisor goes down for upgrades. > > Tools may need to restart in order to reconnect during this time and nothing > will be able to write to the database tables until failover is completed. > > After failover, services should resume as normal, and we will announce when > it is done. The process will take some time because we must copy over several > databases by hand due to three temporarily unreplicated tables being repaired > while things are in read-only mode and the four databases that are always > unreplicated being copied > (https://wikitech.wikimedia.org/wiki/Help:Toolforge/Database#ToolsDB_Backups_and_Replication > > <https://wikitech.wikimedia.org/wiki/Help:Toolforge/Database#ToolsDB_Backups_and_Replication>). > I expect at least half an hour in read-only mode, but things could take > longer or shorter time depending on volume of data to copy and issues > encountered during the process. > > Details are on Phabricator at https://phabricator.wikimedia.org/T263679 > <https://phabricator.wikimedia.org/T263679> > > Brooke Storm > Staff SRE > Wikimedia Cloud Services > [email protected] <mailto:[email protected]> > IRC: bstorm >
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