而另一個也有裝 prometheus-operator 的 kubernetes cluster 卻沒有這情況,原本以為是 cluster 的問題,後來查了一下網路發現這可能是這條 rule 的 bug,不過這無法解釋為什麼另一個 kubernetes cluster 就不會產生 alert。
不過決定暫時先手動拿掉這條 rule ,因為是 operator 的架構,可以很直覺的去修改 rule 內容
kubectl -n monitoring edit prometheusrules.monitoring.coreos.com prometheus-prometheus-oper-etcd
把有關 etcdHighNumberOfFailedGRPCRequests 的 rule 移除掉即可 (我其實是 comment rule,但是儲存更新後,就自動把 comment 掉的 rule 給移除了)
順便補充一個連結,說明如何新增自己的 rule,同樣是因為 operator 的架構,讓新增 rule 的方式也變得很有彈性。
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