The ToolsDB service suffered a breakage in replication on 2020-10-27. WMCS has 
tried to restore replication of data, but that has been unsuccessful so far 
including doing a dump to rebuild replication without downtime.
At this point, we have a new server waiting to become the replica, but to start 
the replication process, we need to set the database to read-only for a full 
dump. This could easily take more than an hour. During that entire time, the 
database will be read-only.

We will begin at 1600 UTC and finish when it is done. The database is quite 
large, but, with it in read-only mode, I hope the backup will not take terribly 
long.

Please see https://phabricator.wikimedia.org/T266587 
<https://phabricator.wikimedia.org/T266587> for additional information.

Brooke Storm
Staff SRE
Wikimedia Cloud Services
[email protected] <mailto:[email protected]>
IRC: bstorm

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