Add incident report: 2023-02-01 leap hub, dask-gateway induced outage

reports/2023-02-01-daskhub-induced-evictions.md

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+# 2023-02-01 Heavy use of dask-gateway induced critical pod evictions
+
+## Timeline
+
+All times in UTC+1
+
+- 2023-02-01 - [Summary of issue updated between ~8-9 PM](https://github.com/2i2c-org/infrastructure/issues/2126#issuecomment-1412554908)
+
+## What went wrong
+
+- I believe various critical pods on core nodes pods got evicted when prometheus started scraping from ~200 nodes metrics exporters
+- I think its likely, but I can't say for sure, that the dask scheduler pod also would run into resource limitations with this amount of workers
+
+## Follow-up improvements
+
+- #2127
+- #2213
+- #2209 
+- #2324
+- #2366