运维开发网

kubelet常见问题处解决

运维开发网 https://www.qedev.com 2020-05-13 16:42 出处:网络 作者:运维开发网整理
Unable to update cni config: No networks found in /etc/cni/net 错误如下: Unable to update cni config: No networks found in /etc/cni/net Container runtime network not ready: NetworkReady=false reason:Netwo
Unable to update cni config: No networks found in /etc/cni/net 错误如下: Unable to update cni config: No networks found in /etc/cni/net Container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message 解决方法是安装flannel: sysctl net.bridge.bridge-nf-call-iptables=1 kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.10.0/Documentation/kube-flannel.yml 1 node(s) had taints that the pod didn‘t tolerate.     kubectl describe pod 有时候一个pod创建之后一直是pending,没有日志,也没有pull镜像,describe的时候发现里面有一句话: 1 node(s) had taints that the pod didn‘t tolerate. 直译意思是节点有了污点无法容忍,执行 kubectl get no -o yaml | grep taint -A 5 之后发现该节点是不可调度的。这是因为kubernetes出于安全考虑默认情况下无法在master节点上部署pod,于是用下面方法解决: kubectl taint nodes --all node-role.kubernetes.io/master-        
  1. master节点默认不可部署pod
执行如下,node-role.kubernetes.io/master 可以在 kubectl edit node master1中taint配置参数下查到 [email protected]:/var/lib/kubelet# kubectl taint node master1 node-role.kubernetes.io/master- node "master1" untainted
  1. node节点pod无法启动/节点删除网络重置
    1. node1之前反复添加过,添加之前需要清除下网络
[email protected]:/var/lib/kubelet# kubectl get po -o wide NAME READY STATUS RESTARTS AGE IP NODE nginx-8586cf59-6zw9k 1/1 Running 0 9m 10.244.3.3 node2 nginx-8586cf59-jk5pc 0/1 ContainerCreating 0 9m <none> node1 nginx-8586cf59-vm9h4 0/1 ContainerCreating 0 9m <none> node1 nginx-8586cf59-zjb84 1/1 Running 0 9m 10.244.3.2 node2 [email protected]:~# journalctl -u kubelet failed: rpc error: code = Unknown desc = NetworkPlugin cni failed to set up pod "nginx-8586cf59-rm4sh_default" network: failed to set bridge addr: "cni0" already has an IP address different from 10.244.2.1/24 12252 cni.go:227] Error while adding to cni network: failed to set bridge addr: "cni0" already
  1. 重置kubernetes服务,重置网络。删除网络配置,link
kubeadm reset systemctl stop kubelet systemctl stop docker rm -rf /var/lib/cni/ rm -rf /var/lib/kubelet/* rm -rf /etc/cni/ ifconfig cni0 down ifconfig flannel.1 down ifconfig docker0 down ip link delete cni0 ip link delete flannel.1 systemctl start docker       https://yq.aliyun.com/articles/68921

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