节点状态和k8s版本信息
[vagrant@k8s-master ~]$ kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-master Ready master 4m v1.8.5
[vagrant@k8s-master ~]$
pod 状态
[vagrant@k8s-master ~]$ kubectl get po -n kube-system
NAME READY STATUS RESTARTS AGE
etcd-k8s-master 1/1 Running 0 1m
kube-apiserver-k8s-master 1/1 Running 0 1m
kube-controller-manager-k8s-master 1/1 Running 0 2m
kube-dns-566dc99866-7txk5 0/3 ContainerCreating 0 2m
kube-flannel-ds-d47g2 1/1 Running 0 2m
kube-proxy-pv9rw 1/1 Running 0 2m
kube-scheduler-k8s-master 1/1 Running 0 2m
kubernetes-dashboard-f49bbf6d9-dhgj7 0/1 ContainerCreating 0 2m
kube-dns pod 事件：
[vagrant@k8s-master ~]$ kubectl describe po kube-dns-566dc99866-7txk5 -n kube-system
Name: kube-dns-566dc99866-7txk5
Namespace: kube-system
Node: k8s-master/192.168.119.101
Start Time: Thu, 13 Sep 2018 07:02:55 +0000
Labels: k8s-app=kube-dns
pod-template-hash=1228755422
Annotations: kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"kube-system","name":"kube-dns-566dc99866","uid":"c080c790-b722-11e8-836b-5254005f...
Status: Pending
IP:
Created By: ReplicaSet/kube-dns-566dc99866
Controlled By: ReplicaSet/kube-dns-566dc99866
Containers:
kubedns:
Container ID:
Image: registry.cn-hangzhou.aliyuncs.com/google_containers/k8s-dns-kube-dns-amd64:1.14.5
Image ID:
Ports: 10053/UDP, 10053/TCP, 10055/TCP
Args:
--domain=cluster.local.
--dns-port=10053
--config-dir=/kube-dns-config
--v=2
State: Waiting
Reason: ContainerCreating
Ready: False
Restart Count: 0
Limits:
memory: 170Mi
Requests:
cpu: 100m
memory: 70Mi
Liveness: http-get http://:10054/healthcheck/kubedns delay=60s timeout=5s period=10s #success=1 #failure=5
Readiness: http-get http://:8081/readiness delay=3s timeout=5s period=10s #success=1 #failure=3
Environment:
PROMETHEUS_PORT: 10055
Mounts:
/kube-dns-config from kube-dns-config (rw)
/var/run/secrets/kubernetes.io/serviceaccount from kube-dns-token-bqbpk (ro)
dnsmasq:
Container ID:
Image: registry.cn-hangzhou.aliyuncs.com/google_containers/k8s-dns-dnsmasq-nanny-amd64:1.14.5
Image ID:
Ports: 53/UDP, 53/TCP
Args:
-v=2
-logtostderr
-configDir=/etc/k8s/dns/dnsmasq-nanny
-restartDnsmasq=true
--
-k
--cache-size=1000
--log-facility=-
--server=/cluster.local/127.0.0.1#10053
--server=/in-addr.arpa/127.0.0.1#10053
--server=/ip6.arpa/127.0.0.1#10053
State: Waiting
Reason: ContainerCreating
Ready: False
Restart Count: 0
Requests:
cpu: 150m
memory: 20Mi
Liveness: http-get http://:10054/healthcheck/dnsmasq delay=60s timeout=5s period=10s #success=1 #failure=5
Environment: <none>
Mounts:
/etc/k8s/dns/dnsmasq-nanny from kube-dns-config (rw)
/var/run/secrets/kubernetes.io/serviceaccount from kube-dns-token-bqbpk (ro)
sidecar:
Container ID:
Image: registry.cn-hangzhou.aliyuncs.com/google_containers/k8s-dns-sidecar-amd64:1.14.5
Image ID:
Port: 10054/TCP
Args:
--v=2
--logtostderr
--probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.cluster.local,5,A
--probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.cluster.local,5,A
State: Waiting
Reason: ContainerCreating
Ready: False
Restart Count: 0
Requests:
cpu: 10m
memory: 20Mi
Liveness: http-get http://:10054/metrics delay=60s timeout=5s period=10s #success=1 #failure=5
Environment: <none>
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from kube-dns-token-bqbpk (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
kube-dns-config:
Type: ConfigMap (a volume populated by a ConfigMap)
Name: kube-dns
Optional: true
kube-dns-token-bqbpk:
Type: Secret (a volume populated by a Secret)
SecretName: kube-dns-token-bqbpk
Optional: false
QoS Class: Burstable
Node-Selectors: <none>
Tolerations: CriticalAddonsOnly
node-role.kubernetes.io/master:NoSchedule
node.alpha.kubernetes.io/notReady:NoExecute for 300s
node.alpha.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 1m (x8 over 2m) default-scheduler No nodes are available that match all of the predicates: NodeNotReady (1).
Normal Scheduled 24s default-scheduler Successfully assigned kube-dns-566dc99866-7txk5 to k8s-master
Normal SuccessfulMountVolume 24s kubelet, k8s-master MountVolume.SetUp succeeded for volume "kube-dns-config"
Normal SuccessfulMountVolume 24s kubelet, k8s-master MountVolume.SetUp succeeded for volume "kube-dns-token-bqbpk"
Warning FailedCreatePodSandBox 23s kubelet, k8s-master Failed create pod sandbox.
Warning FailedSync 4s (x4 over 23s) kubelet, k8s-master Error syncing pod
Normal SandboxChanged 4s (x3 over 21s) kubelet, k8s-master Pod sandbox changed, it will be killed and re-created.
网上说是因为 kubenertes-cni 0.5.1 没有 portmap 插件引起的，不过 kubeadm-ansible 也是用的1.8.5, 它是如何部署的呢？
