https://bugzilla.wikimedia.org/show_bug.cgi?id=16993
Summary: Scripts that wait for lagged database servers should
ignore those out of rotation
Product: MediaWiki
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: Normal
Component: Database
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
** s3 cluster **
10.0.0.234 db1 0
10.0.0.101 adler 0
10.0.0.238 db5 0
10.0.6.21 db11 0
10.0.6.28 db18 174366 ****************************************
10.0.6.29 db19 0
10.0.6.31 db21 0
10.0.6.39 db29 1 *
Currently, scripts that wait for lagged servers to catch up before continuing
operations don't distinguish between those in the system that will actually be
used, and those which have been taken out of rotation (0 load placed on them).
To avoid disrupting activity when something needs a long catch-up, we currently
have to remove it entirely from db.php -- this is pretty crappy because it then
stops showing up in our regular lag tracking, so it's harder to see it when it
catches up.
It would be nice to be able to have it in the system so it can be tracked, but
still not actively used.
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