The nagios check for "DNS Discovery operations diffs" has been alerting since the DC switch over. The fix is likely simple however it is also worth investigating if the switch over process needs to be amended to include this change
While making the change here i notice that some services which would normally be active-active seem to be only running in codfw e.g.
Further i notice that swift-rw is still active in eqiad
Not sure how I missed the icinga alert, but thanks for the ping. I have documented this as a manual step that needs to be taken https://wikitech.wikimedia.org/w/index.php?title=Switch_Datacenter&type=revision&diff=1917853&oldid=1917612