I have installed microk8s on my centos 8 operating system.
kube-system coredns-7f9c69c78c-lxm7c 0/1 Running 1 18m
kube-system calico-node-thhp8 1/1 Running 1 68m
kube-system calico-kube-controllers-f7868dd95-dpsnl 0/1 CrashLoopBackOff 23 68m
When I do microk8s enable dns, coredns or calico-kube-controllers cannot be started as above. Describe the pod for coredns :
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal Scheduled 14m default-scheduler Successfully assigned kube-system/coredns-7f9c69c78c-lxm7c to localhost.localdomain
Normal Pulled 14m kubelet Container image "coredns/coredns:1.8.0" already present on machine
Normal Created 14m kubelet Created container coredns
Normal Started 14m kubelet Started container coredns
Warning Unhealthy 11m (x22 over 14m) kubelet Readiness probe failed: HTTP probe failed with statuscode: 503
Normal SandboxChanged 2m8s kubelet Pod sandbox changed, it will be killed and re-created.
Normal Pulled 2m7s kubelet Container image "coredns/coredns:1.8.0" already present on machine
Normal Created 2m7s kubelet Created container coredns
Normal Started 2m6s kubelet Started container coredns
Warning Unhealthy 2m6s kubelet Readiness probe failed: Get "http://10.1.102.132:8181/ready": dial tcp 10.1.102.132:8181: connect: connection refused
Warning Unhealthy 9s (x12 over 119s) kubelet Readiness probe failed: HTTP probe failed with statuscode: 503
Describe the pod for calico-kube-controllers :
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 73m default-scheduler no nodes available to schedule pods
Warning FailedScheduling 73m (x1 over 73m) default-scheduler no nodes available to schedule pods
Warning FailedScheduling 72m (x1 over 72m) default-scheduler 0/1 nodes are available: 1 node(s) had taint {node.kubernetes.io/not-ready: }, that the pod didn't tolerate.
Normal Scheduled 72m default-scheduler Successfully assigned kube-system/calico-kube-controllers-f7868dd95-dpsnl to localhost.localdomain
Warning FailedCreatePodSandBox 72m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "f3ea36b003b0c9142ae63fee31531f9102e40ab837f4d795d1efb5c85af223ec": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Warning FailedCreatePodSandBox 71m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "a1c405cdcebe79c586badcc8da47700247751a50ef9a1403e95fc4995485fba0": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Warning FailedCreatePodSandBox 71m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "4adb07610eef0d7a618105abf72a114e486c373a02d5d1b204da2bd35268dd1b": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Warning FailedCreatePodSandBox 71m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "96aac009175973ac4c20034824db3443b3ab184cfcd1ed23786e539fb6147796": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Warning FailedCreatePodSandBox 71m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "79639a18edcffddbdb93492157af43bb6c1f1a9ac2af1b3fbbac58335737d5dc": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Warning FailedCreatePodSandBox 70m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "3264f006447297583a37d8cc87ffe01311deaf2a31bf25867b3b18c83db2167d": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Warning FailedCreatePodSandBox 70m kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "5c5cf6509bfcf515ad12bc51451e4c385e5242c4f7bb593779d207abf9c906a4": error getting ClusterInformation: resource does not exist: ClusterInformation(default) with error: clusterinformations.crd.projectcalico.org "default" not found
Normal Pulling 70m kubelet Pulling image "calico/kube-controllers:v3.13.2"
Normal Pulled 69m kubelet Successfully pulled image "calico/kube-controllers:v3.13.2" in 50.744281789s
Normal Created 69m kubelet Created container calico-kube-controllers
Normal Started 69m kubelet Started container calico-kube-controllers
Warning Unhealthy 69m (x2 over 69m) kubelet Readiness probe failed: Failed to read status file status.json: open status.json: no such file or directory
Warning MissingClusterDNS 37m (x185 over 72m) kubelet pod: "calico-kube-controllers-f7868dd95-dpsnl_kube-system(d8c3ee40-7d3b-4a84-9398-19ec8a6d9082)". kubelet does not have ClusterDNS IP configured and cannot create Pod using "ClusterFirst" policy. Falling back to "Default" policy.
Warning Unhealthy 31m (x6 over 32m) kubelet Readiness probe failed: Failed to read status file status.json: open status.json: no such file or directory
Normal Pulled 30m (x4 over 32m) kubelet Container image "calico/kube-controllers:v3.13.2" already present on machine
Normal Created 30m (x4 over 32m) kubelet Created container calico-kube-controllers
Normal Started 30m (x4 over 32m) kubelet Started container calico-kube-controllers
Warning BackOff 22m (x42 over 32m) kubelet Back-off restarting failed container
Normal SandboxChanged 10m kubelet Pod sandbox changed, it will be killed and re-created.
Warning Unhealthy 9m36s (x6 over 10m) kubelet Readiness probe failed: Failed to read status file status.json: open status.json: no such file or directory
Normal Pulled 8m51s (x4 over 10m) kubelet Container image "calico/kube-controllers:v3.13.2" already present on machine
Normal Created 8m51s (x4 over 10m) kubelet Created container calico-kube-controllers
Normal Started 8m51s (x4 over 10m) kubelet Started container calico-kube-controllers
Warning BackOff 42s (x42 over 10m) kubelet Back-off restarting failed container
I cannot start my microk8s services. I don't encounter these on my Ubuntu server. What can I do in these error situations that I encounter for my Centos 8 server?
CodePudding user response：
Have you tried updating the microk8s version?