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@@ -254,7 +254,7 @@ before CoreDNS may be deployed fully. Hence the `Pending` state before the netwo
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这一行为是 **预期之中** 的,因为系统就是这么设计的。
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kubeadm 的网络供应商是中立的,因此管理员应该选择
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[安装 pod 的网络插件](/zh-cn/docs/concepts/cluster-administration/addons/)。
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[安装 Pod 的网络插件](/zh-cn/docs/concepts/cluster-administration/addons/)。
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你必须完成 Pod 的网络配置,然后才能完全部署 CoreDNS。
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在网络被配置好之前,DNS 组件会一直处于 `Pending` 状态。
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@@ -346,17 +346,17 @@ Unable to connect to the server: x509: certificate signed by unknown authority (
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-->
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## TLS 证书错误
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以下错误指出证书可能不匹配。
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以下错误说明证书可能不匹配。
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```none
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# kubectl get pods
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Unable to connect to the server: x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kubernetes")
`x509: certificate has expired or is not yet valid` 之类的错误。要解决此问题,你必须执行以下步骤:
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<!--
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1. Backup and delete `/etc/kubernetes/kubelet.conf` and `/var/lib/kubelet/pki/kubelet-client*` from the failed node.
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1. From a working control plane node in the cluster that has `/etc/kubernetes/pki/ca.key` execute
@@ -447,15 +447,15 @@ Error from server (NotFound): the server could not find the requested resource
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This may lead to problems with flannel, which defaults to the first interface on a host. This leads to all hosts thinking they have the same public IP address. To prevent this, pass the `--iface eth1` flag to flannel so that the second interface is chosen.
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-->
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## 在 Vagrant 中使用 flannel 作为 pod 网络时的默认 NIC
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## 在 Vagrant 中使用 flannel 作为 Pod 网络时的默认 NIC
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以下错误可能表明 Pod 网络中出现问题:
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```sh
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Error from server (NotFound): the server could not find the requested resource
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```
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- 如果你正在 Vagrant 中使用 flannel 作为 pod 网络,则必须指定 flannel 的默认接口名称。
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- 如果你正在 Vagrant 中使用 flannel 作为 Pod 网络,则必须指定 flannel 的默认接口名称。
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Vagrant 通常为所有 VM 分配两个接口。第一个为所有主机分配了 IP 地址 `10.0.2.15`,用于获得 NATed 的外部流量。
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@@ -505,7 +505,7 @@ Error from server: Get https://10.19.0.41:10250/containerLogs/default/mysql-ddc6
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- 这或许是由于 Kubernetes 使用的 IP 无法与看似相同的子网上的其他 IP 进行通信的缘故,
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可能是由机器提供商的政策所导致的。
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- DigitalOcean 既分配一个共有 IP 给 `eth0`,也分配一个私有 IP 在内部用作其浮动 IP 功能的锚点,
Another cause for CoreDNS to have `CrashLoopBackOff` is when a CoreDNS Pod deployed in Kubernetes detects a loop. [A number of workarounds](https://github.com/coredns/coredns/tree/master/plugin/loop#troubleshooting-loops-in-kubernetes-clusters)
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are available to avoid Kubernetes trying to restart the CoreDNS Pod every time CoreDNS detects the loop and exits.
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