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== Outage troubleshooting ==

* If a load-balancer is out: see [[LVS]]
* If errors on mw, look at the relevant hosts in ganglia, see if anything stands out, and look at the [|exception&gtype=stack&glegend=show&aggregate=1&embed=1 mediawiki error graphs].
In case of a persistent spike in fatals,  look at the fatal log, which is currently at fluorine:/a/mw-log/fatal.log


Latest revision as of 13:13, 20 September 2021