| hoo added a comment. |
In T138208#4679458, @jcrespo wrote:From another thread, from TimS:
It sounds like the snapshot hosts were in fact needing and using the host. It's not LoadBalancer's fault if some maintenance script calls wfGetDB() without specifying a query group. Throwing an exception is the correct thing to do if the MW configuration is incorrect, since it allows the maintenance script to terminate and be restarted with different configuration.
Given we set $wgDBDefaultGroup* to dump for these scripts, LoadBalancer should only ever use the "default group" in case the dump host(s) are not available. Given this (probably) didn't happen here, we're almost certainly facing some other problem.
* $wgDBDefaultGroup configures the DB group to use per default (if no other group is explicitely given), thus wfGetDB (and others) will not connect to the default hosts.
Cc: Lydia_Pintscher, daniel, hoo, ArielGlenn, jcrespo, Zppix, Nandana, Lahi, Gq86, GoranSMilovanovic, Lunewa, QZanden, LawExplorer, gnosygnu, Wikidata-bugs, aude, Mbch331
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