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操作系统信息
例如：虚拟机/物理机，Centos7.5/Ubuntu18.04，4C/8G
Kubernetes版本信息
例如：v18.6。单节点还是多节点。
容器运行时
例如，使用 docker/containerd，版本多少
KubeSphere版本信息
用的exsi 虚拟了 4台主机，一台master 三台 node，操作系统时 centos 7.6 安装 v3.3.1。在线安装。全套重新安装。
安装后无法使用 dns 用nslookup pod 名 无法找到 ping也不行。
最后查看coredns日志，一直报此错，也将coredns升为最新也报错。全新机器装也不行。
OCI runtime exec failed: exec failed: container_linux.go:380: starting container process caused: exec: “sh”: executable file not found in $PATH: unknown
OCI runtime exec failed: exec failed: container_linux.go:380: starting container process caused: exec: “sh”: executable file not found in $PATH: unknown
控制台检查是启动的
[root@eosgi app]# for p in $(kubectl get pods –namespace=kube-system -l k8s-app=kube-dns -o name); do kubectl logs –namespace=kube-system $p; done
.:53
[INFO] plugin/reload: Running configuration MD5 = db32ca3650231d74073ff4cf814959a7
CoreDNS-1.8.0
linux/amd64, go1.15.3, 054c9ae
.:53
[INFO] plugin/reload: Running configuration MD5 = db32ca3650231d74073ff4cf814959a7
CoreDNS-1.8.0
linux/amd64, go1.15.3, 054c9ae
加了日志后
[root@eosgi app]# for p in $(kubectl get pods –namespace=kube-system -l k8s-app=kube-dns -o name); do kubectl logs –namespace=kube-system $p; done
.:53
[INFO] plugin/reload: Running configuration MD5 = db32ca3650231d74073ff4cf814959a7
CoreDNS-1.8.0
linux/amd64, go1.15.3, 054c9ae
[ERROR] plugin/errors: 2 6526750195287269828.940030130360711357. HINFO: read udp 10.233.70.8:41602->61.139.2.69:53: i/o timeout
[ERROR] plugin/errors: 2 6526750195287269828.940030130360711357. HINFO: read udp 10.233.70.8:42616->118.118.118.13:53: i/o timeout
[ERROR] plugin/errors: 2 6526750195287269828.940030130360711357. HINFO: read udp 10.233.70.8:48012->61.139.2.69:53: i/o timeout
[ERROR] plugin/errors: 2 6526750195287269828.940030130360711357. HINFO: read udp 10.233.70.8:45298->61.139.2.69:53: i/o timeout
[INFO] Reloading
[INFO] plugin/health: Going into lameduck mode for 5s
[INFO] plugin/reload: Running configuration MD5 = 3d3f6363f05ccd60e0f885f0eca6c5ff
[INFO] Reloading complete
[INFO] 10.233.96.0:49360 - 6087 “AAAA IN alertmanager-main-0.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 199 0.000220757s
[INFO] 10.233.96.0:49360 - 24063 “A IN alertmanager-main-1.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 210 0.000106853s
[INFO] 10.233.96.0:49360 - 12939 “AAAA IN alertmanager-main-2.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 199 0.000087602s
[INFO] 10.233.96.0:49360 - 37719 “A IN alertmanager-main-0.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 210 0.000171603s
[INFO] 10.233.96.0:49360 - 12446 “A IN alertmanager-main-1.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 210 0.000051775s
[INFO] 10.233.96.0:49360 - 18348 “A IN alertmanager-main-2.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 210 0.000082576s
[INFO] 10.233.90.0:41734 - 1740 “AAAA IN alertmanager-main-0.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 199 0.000126299s
[INFO] 10.233.90.0:41734 - 65220 “AAAA IN alertmanager-main-1.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 199 0.000144073s
[INFO] 10.233.90.0:41734 - 22451 “A IN alertmanager-main-2.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 210 0.000059467s
[INFO] 10.233.96.0:49440 - 25091 “A IN alertmanager-main-0.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 210 0.000084193s
[INFO] 10.233.96.0:49440 - 24037 “AAAA IN alertmanager-main-1.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 199 0.000060377s
[INFO] 10.233.96.0:49440 - 62105 “AAAA IN alertmanager-main-2.alertmanager-operated.kubesphere-monitoring-system.svc.cluster.local. tcp 106 false 65535” NOERROR qr,aa,rd 199 0.000054796s
.:53
[INFO] plugin/reload: Running configuration MD5 = db32ca3650231d74073ff4cf814959a7
CoreDNS-1.8.0
linux/amd64, go1.15.3, 054c9ae
[ERROR] plugin/errors: 2 65719136328185798.7496909725445078349. HINFO: read udp 10.233.70.12:47259->61.139.2.69:53: i/o timeout
[ERROR] plugin/errors: 2 65719136328185798.7496909725445078349. HINFO: read udp 10.233.70.12:36671->118.118.118.13:53: i/o timeout
[ERROR] plugin/errors: 2 65719136328185798.7496909725445078349. HINFO: read udp 10.233.70.12:57314->61.139.2.69:53: i
