k8s-常见错误

一 网络错误

报错提示：network: failed to set bridge addr: "cni0" already has an IP address differe

解决办法：

ip link set cni0 down
ip link delete cni0

 

 

二命名空间不能删除

参考：https://www.cnblogs.com/douh/p/12487577.html

 

1 先运行 kubectl get ns ingress-nginx -o json > rdbms.json

其中 ingress-nginx是你要删除的命名空间，然后打开rdbms.json，删除其中的spec字段

 

2 然后新开一个窗口运行kubectl proxy跑一个API代理在本地的8081端口

  # kubectl proxy --port=8081

 

3 执行命令删除

 

curl -k -H "Content-Type: application/json" -X PUT --data-binary @rdbms.json http://127.0.0.1:8081/api/v1/namespaces/ingress-nginx/finalize

其中json文件和命名空间要和第一条命令一致。

 

三 解决国内无法拉取k8s镜像的问题

 

 

参考 https://www.jianshu.com/p/d42ef0eff63f

 

查看kubeadm config所需的镜像

 

$ kubeadm config images list

k8s.gcr.io/kube-apiserver:v1.13.1
k8s.gcr.io/kube-controller-manager:v1.13.1
k8s.gcr.io/kube-scheduler:v1.13.1
k8s.gcr.io/kube-proxy:v1.13.1
k8s.gcr.io/pause:3.1
k8s.gcr.io/etcd:3.2.24
k8s.gcr.io/coredns:1.2.6

1：中转

首先从Kubernetes国内Docker镜像镜像，然后修改镜像的tag

sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/kube-controller-manager:v1.13.1 k8s.gcr.io/kube-controller-manager:v1.13.1
sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/kube-apiserver:v1.13.1 k8s.gcr.io/kube-apiserver:v1.13.1
sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/kube-proxy:v1.13.1 k8s.gcr.io/kube-proxy:v1.13.1
sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/kube-scheduler:v1.13.1 k8s.gcr.io/kube-scheduler:v1.13.1
sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/etcd:3.2.24 k8s.gcr.io/etcd:3.2.24
sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/pause:3.1 k8s.gcr.io/pause:3.1
sudo docker tag registry.cn-beijing.aliyuncs.com/imcto/coredns:1.2.6 k8s.gcr.io/coredns:1.2.6

2：修改配置kubeadm.conf

使用kubeadm配置文件，通过在配置文件中指定docker仓库地址，便于内网快速部署。

生成配置文件

 

kubeadm config print init-defaults ClusterConfiguration >kubeadm.conf

 

修改kubeadm.conf

再次查看kubeadm config所需的镜像

$ kubeadm config images list --config kubeadm.conf
registry.cn-beijing.aliyuncs.com/imcto/kube-apiserver:v1.13.1
registry.cn-beijing.aliyuncs.com/imcto/kube-controller-manager:v1.13.1
registry.cn-beijing.aliyuncs.com/imcto/kube-scheduler:v1.13.1
registry.cn-beijing.aliyuncs.com/imcto/kube-proxy:v1.13.1
registry.cn-beijing.aliyuncs.com/imcto/pause:3.1
registry.cn-beijing.aliyuncs.com/imcto/etcd:3.2.24
registry.cn-beijing.aliyuncs.com/imcto/coredns:1.2.6

拉取镜像并初始化

kubeadm config images pull --config kubeadm.conf
kubeadm init --config kubeadm.conf