我使用kubeadm kubeadm init
创建了
集群 .
我在 /var/log/messages
收到错误消息 .
Oct 20 10:09:52 aws08 kubelet: I1020 10:09:52.015921 7116
docker_manager.go:1787] DNS ResolvConfPath exists:
/var/lib/docker/containers/717adf7a8481637ac20a9ba103d8f97635a88bf05f18bd4299f0d164e48f2920/resolv.conf.
Will attempt to add ndots option: options ndots:5 Oct 20 10:09:52
aws08 kubelet: I1020 10:09:52.015963 7116 docker_manager.go:2121]
Calling network plugin cni to setup pod for
kube-dns-2247936740-cjij4_kube-system(3b296413-96aa-11e6-8c40-02fff663a168)
Oct 20 10:09:52 aws08 kubelet: E1020 10:09:52.015982 7116
docker_manager.go:2127] Failed to setup network for pod
"kube-dns-2247936740-cjij4_kube-system(3b296413-96aa-11e6-8c40-02fff663a168)"
using network plugins "cni": cni config unintialized; Skipping pod Oct
20 10:09:52 aws08 kubelet: I1020 10:09:52.018824 7116
docker_manager.go:1492] Killing container
"717adf7a8481637ac20a9ba103d8f97635a88bf05f18bd4299f0d164e48f2920
kube-system/kube-dns-2247936740-cjij4" with 30 second grace period
DNS窗格失败:
kube-system kube-dns-2247936740-j5rtc 0/3 ContainerCreating 21 1h
如果我禁用了CNI,则DNS pod正在运行 . 但DNS的问题仍然存在 .
禁用cni的方法是在 /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
中注释 KUBELET_NETWORK_ARGS
行并重新启动 kubelet
service
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--kubeconfig=/etc/kubernetes/kubelet.conf --require-kubeconfig=true"
Environment="KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests --allow-privileged=true"
# Environment="KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_DNS_ARGS=--cluster-dns=100.64.0.10 --cluster-domain=cluster.local"
Environment="KUBELET_EXTRA_ARGS=--v=4"
ExecStart=
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_SYSTEM_PODS_ARGS $KUBELET_NETWORK_ARGS $KUBELET_DNS_ARGS $KUBELET_EXTRA_ARGS
其次是:
sudo systemctl重启kubelet
2 回答
我猜你忘记了setup the pod network .
从文档:
您可以使用以下命令安装pod网络加载项:
例:
安装Weave Net附加组件 .
完成此操作后,您可能需要重新创建kube-dns pod .
应该在kubelet初始化期间完成cni初始化 . 因此,请尝试重新启动kubelet服务,并确保可以正确解析cni配置 .