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{{Incident
{{Incident
|brief=Switch reboot took down DNS
|brief=Switch reboot took down DNS, which brooke'd selector
|severity=Moderate
|severity=Moderate
|impact=High (Dead air for around 2 minutes)
|impact=High (Dead air for around 45 minutes)
|start=25/02/2017 16:29
|start=2020-05-11 05:00
|end=25/02/2017 17:30
|end=2020-05-11 05:46
|mitigation=Reduce dependency on uplink
|mitigation=Reduce dependency on uplink
|leader=Connor Sanders (CS)
|leader=Connor Sanders (CS)
|others=Isaac Lowe (IL)
|others=Isaac Lowe (IL), Marks Polakovs (MP)
}}
}}
== Summary ==
== Summary ==
* Reduce dependency on upstream services
* Reduce dependency on upstream services
:* Investigate a local caching DNS resolver?
:* Investigate a local caching DNS resolver?
* Ask ITS kindly to tell us when they take down our campus uplink
:* '''MP - done-ish, running unbound on uryfw0 and many (but not all boxes use it)'''
* Ask ITS kindly to make it reboot at xx:30 instead of xx:00
* Ask ITS nicely to tell us when they take down our campus uplink
:* '''MP - done'''
* Ask ITS nicely to make it reboot at xx:30 instead of xx:00
:* '''MP - done'''
* Improve documentation and logging of the new WebStudio services, to make future troubleshooting easier
* Improve documentation and logging of the new WebStudio services, to make future troubleshooting easier
* Figure out why Dearie-Me didn't fire - possibly needs a recalibrate
* Reduce log spamminess of Dearie-Me, it filled up its journald buffer quite quickly
* Reduce log spamminess of Dearie-Me, it filled up its journald buffer quite quickly
== Timings ==
HH:MM:SS
Dead air start: 05:02:06.500
Dead air end: 05:45:42.000
TOTAL: 00:43:35.500
[[Category:Incident Reports]]
[[Category:Incident Reports]]