[16:13:17] We've lost a switch earlier today, a few elasticsearch hosts were taken out of the cluster. [16:14:33] There was a short impact on 95 and 99%-ile (https://grafana.wikimedia.org/d/000000455/elasticsearch-percentiles?orgId=1&var-cirrus_group=codfw&var-cluster=elasticsearch&var-exported_cluster=production-search&var-smoothing=1&from=1673683348953&to=1673686374626) but mostly nothing on 50%-ile. So very low user impact. [16:16:15] Checking on cluster health (codfw) afterward, I see a 4 RED indices (`curl -s localhost:9200/_cat/indices | grep -v green`). All of them are titlesuggest and aliases are pointing to other indices. So this is probably not related to the lost switch, but left over from something else. [16:16:31] Minor cleanup to do for next week.