Question

我有5台机器运行Ubuntu 16.04.1 LTS。我想将它们设置为Kubernetes Cluster。我试着按照getting started guide使用kubeadm。

这一切都很好，直到步骤 3/4安装pod网络。我看了addon page寻找一个pod网络并选择了法兰绒覆盖网络。我将yaml文件复制到机器上并执行：

root@up01:/home/up# kubectl apply -f flannel.yml

导致：

configmap "kube-flannel-cfg" created
daemonset "kube-flannel-ds" created

所以我认为它没问题，但是当我显示所有pod内容时：

root@up01:/etc/kubernetes/manifests# kubectl get pods --all-namespaces
NAMESPACE     NAME                              READY     STATUS              RESTARTS   AGE
kube-system   dummy-2088944543-d5f50            1/1       Running             0          50m
kube-system   etcd-up01                         1/1       Running             0          48m
kube-system   kube-apiserver-up01               1/1       Running             0          50m
kube-system   kube-controller-manager-up01      1/1       Running             0          49m
kube-system   kube-discovery-1769846148-jvx53   1/1       Running             0          50m
kube-system   kube-dns-2924299975-prlgf         0/4       ContainerCreating   0          49m
kube-system   kube-flannel-ds-jb1df             2/2       Running             0          32m
kube-system   kube-proxy-rtcht                  1/1       Running             0          49m
kube-system   kube-scheduler-up01               1/1       Running             0          49m

问题是kube-dns保持在ContainerCreating状态。我不知道该怎么办。

Answer 1

您很可能错过了指南中的这一重要信息：

如果您想使用法兰绒作为pod网络，请指定 --pod-network-cidr 10.244.0.0/16如果你正在使用下面的守护进程清单。

如果省略此class MyViewController: UIViewController { var textField: UITextField! private let textFieldValuePipe = Signal<String?, NoError>.pipe() var textFieldValueSignal: Signal<String?, NoError>! override func viewDidLoad() { // Initialize the text field // ... // Bind the text of the text field to the signal pipe's output textField.reactive.text <~ textFieldValuePipe.output // A signal of text values emitted by the text field upon end of editing. let textFieldValuesSignal = textField.reactive.textValues // A signal of text values emitted by the text field upon any changes. let textFieldContinuousValuesSignal = textField.reactive.continuousTextValues // Merge the relevant signals textFieldValueSignal = Signal.merge(textFieldValuesSignal, textFieldContinuousValuesSignal, textFieldValuePipe.output) // This will print the text field's value when it's changed by the user or programmatically textFieldValueSignal.observeValues { value in print(value ?? "nil") } } // Use this to change the text field's value programmatically func setTextFieldText(_ text: String?) { textFieldValuePipe.input.send(value: text) } }，则永远不会离开kube-dns状态。

您的ContainerCreating命令应为：

kubeadm init

而不是

# kubeadm init --pod-network-cidr 10.244.0.0/16

Answer 2

您是否尝试重启NetworkManager ...？它对我有用..另外，当我也禁用IPv6时，它也有效。

kube-dns保持ContainerCreating状态

2 个答案: