EKS Node Not Ready

0

I have EKS cluster with 4 t.3large which has approx ~50 pods(small size). Often whenever I tried to update the application version from x to y and then few nodes goes into not ready state. Then I have to clean few resources and reboot the worker node and then situation back to normal. Any suggestions ?

Logs from kube-proxy

I0927 16:12:05.785853 1 proxier.go:790] "SyncProxyRules complete" elapsed="104.231873ms" I0927 16:18:27.078985 1 trace.go:205] Trace[1094698301]: "iptables ChainExists" (27-Sep-2022 16:16:36.489) (total time: 66869ms): Trace[1094698301]: [1m6.869976178s] [1m6.869976178s] END I0927 16:18:27.087821 1 trace.go:205] Trace[1957650533]: "iptables ChainExists" (27-Sep-2022 16:16:36.466) (total time: 67555ms): Trace[1957650533]: [1m7.555663612s] [1m7.555663612s] END I0927 16:18:27.124923 1 trace.go:205] Trace[460012371]: "DeltaFIFO Pop Process" ID:monitoring/prometheus-prometheus-node-exporter-gslfb,Depth:36,Reason:slow event handlers blocking the queue (27-Sep-2022 16:18:26.836) (total time: 186ms): Trace[460012371]: [186.190275ms] [186.190275ms] END W0927 16:18:27.248231 1 reflector.go:442] k8s.io/client-go/informers/factory.go:134: watch of *v1.Service ended with: an error on the server ("unable to decode an event from the watch stream: http2: client connection lost") has prevented the request from succeeding W0927 16:18:27.272469 1 reflector.go:442] k8s.io/client-go/informers/factory.go:134: watch of *v1.EndpointSlice ended with: an error on the server ("unable to decode an event from the watch stream: http2: client connection lost") has prevented the request from succeeding I0927 16:18:31.339045 1 trace.go:205] Trace[1140734081]: "DeltaFIFO Pop Process" ID:cuberun/cuberun-cuberun,Depth:42,Reason:slow event handlers blocking the queue (27-Sep-2022 16:18:30.696) (total time: 116ms): Trace[1140734081]: [116.029921ms] [116.029921ms] END I0927 16:18:32.403993 1 trace.go:205] Trace[903972463]: "DeltaFIFO Pop Process" ID:cuberundemo/cuberun-cuberundemo,Depth:41,Reason:slow event handlers blocking the queue (27-Sep-2022 16:18:31.657) (total time: 196ms): Trace[903972463]: [196.24798ms] [196.24798ms] END I0927 16:18:33.233172 1 trace.go:205] Trace[1265312678]: "DeltaFIFO Pop Process" ID:argocd/argocd-metrics,Depth:40,Reason:slow event handlers blocking the queue (27-Sep-2022 16:18:32.738) (total time: 359ms): Trace[1265312678]: [359.090093ms] [359.090093ms] END I0927 16:18:33.261077 1 proxier.go:823] "Syncing iptables rules" I0927 16:18:35.474678 1 proxier.go:790] "SyncProxyRules complete" elapsed="2.867637015s" I0927 16:18:35.587939 1 proxier.go:823] "Syncing iptables rules" I0927 16:18:37.014157 1 proxier.go:790] "SyncProxyRules complete" elapsed="1.45321438s" I0927 16:19:08.904513 1 trace.go:205] Trace[1753182031]: "iptables ChainExists" (27-Sep-2022 16:19:06.254) (total time: 2266ms): Trace[1753182031]: [2.266311394s] [2.266311394s] END I0927 16:19:08.904456 1 trace.go:205] Trace[228375231]: "iptables ChainExists" (27-Sep-2022 16:19:06.299) (total time: 2255ms): Trace[228375231]: [2.255433291s] [2.255433291s] END I0927 16:19:40.540864 1 trace.go:205] Trace[2069259157]: "iptables ChainExists" (27-Sep-2022 16:19:36.494) (total time: 3430ms): Trace[2069259157]: [3.430008597s] [3.430008597s] END I0927 16:19:40.540873 1 trace.go:205] Trace[757252858]: "iptables ChainExists" (27-Sep-2022 16:19:36.304) (total time: 3619ms): Trace[757252858]: [3.61980147s] [3.61980147s] END I0927 16:20:09.976580 1 trace.go:205] Trace[2070318544]: "iptables ChainExists" (27-Sep-2022 16:20:06.285) (total time: 3182ms): Trace[2070318544]: [3.182449365s] [3.182449365s] END I0927 16:20:09.976592 1 trace.go:205] Trace[852062251]: "iptables ChainExists" (27-Sep-2022 16:20:06.313) (total time: 3154ms): Trace[852062251]: [3.154369999s] [3.154369999s] END

asked 2 months ago25 views
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