Scale a cluster with 18182 pods, did't see large range reads on pods in 4.9.0-0.nightly-2022-05-19-025331 [weliang@weliang ~]$ oc get clusterversion NAME VERSION AVAILABLE PROGRESSING SINCE STATUS version 4.9.0-0.nightly-2022-05-19-025331 True False 74m Cluster version is 4.9.0-0.nightly-2022-05-19-025331 [weliang@weliang ~]$ oc get pod --all-namespaces | wc -l 18174 [weliang@weliang ~]$ oc logs pod/etcd-ip-10-0-157-115.us-east-2.compute.internal -c etcd | grep range_response_count {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"522.254246ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/machineconfiguration.openshift.io/controllerconfigs/machine-config-controller\" ","response":"range_response_count:1 size:14718"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"297.054076ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/health\" ","response":"range_response_count:0 size:6"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"375.072888ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/apiserver.openshift.io/apirequestcounts/daemonsets.v1.apps\" ","response":"range_response_count:1 size:23645"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"308.186256ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/leases/\" range_end:\"/kubernetes.io/leases0\" count_only:true ","response":"range_response_count:0 size:8"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"333.705745ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/pods/openshift-marketplace/redhat-marketplace-q6lp8\" ","response":"range_response_count:1 size:4800"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"239.21714ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/apiregistration.k8s.io/apiservices/v1.oauth.openshift.io\" ","response":"range_response_count:1 size:3275"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"385.991985ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/console.openshift.io/consoleclidownloads/\" range_end:\"/kubernetes.io/console.openshift.io/consoleclidownloads0\" count_only:true ","response":"range_response_count:0 size:8"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"503.036961ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/endpointslices/\" range_end:\"/kubernetes.io/endpointslices0\" count_only:true ","response":"range_response_count:0 size:8"} {"level":"warn","ts":"2022-05-23T13:52:40.537Z","caller":"etcdserver/util.go:166","msg":"apply request took too long","took":"443.009848ms","expected-duration":"200ms","prefix":"read-only range ","request":"key:\"/kubernetes.io/configmaps/openshift-oauth-apiserver/audit\" ","response":"range_response_count:1 size:957"} [weliang@weliang ~]$
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (OpenShift Container Platform 4.9.36 bug fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2022:4741