Kubernetes

1vi /etc/yum.repos.d/kubernetes.repo

1[kubernetes]
2name=Kubernetes
3baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
4enabled=1
5gpgcheck=0

1# yum --showduplicates list kubelet
2yum remove kubelet
3yum remove kubelet
4yum install kubeadm
5kubeadm version
6kuberlet --version

1kubeadm config images list
2

1检查Kubelet

1wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
2docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server:v0.6.4
3#vi components.yaml 更改image等
4k apply -f components.yaml

1spec:
2      containers:
3      - args:
4        - --cert-dir=/tmp
5        - --secure-port=4443
6        command:
7        - /metrics-server
8        - --kubelet-insecure-tls=true
9        - --kubelet-preferred-address-types=InternalIP
10        image: registry.k8s.io/metrics-server/metrics-server:v0.3.7

1args:
2- --cert-dir=/tmp
3- --secure-port=4443
4- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
5- --kubelet-use-node-status-port
6- --kubelet-insecure-tls # Add this line (New Version).

1kubectl describe node
2kubectl describe node |grep -E '((Name|Roles):\s{6,})|(\s+(memory|cpu)\s+[0-9]+\w{0,2}.+%\))
3kubectl top node
4kubectl top pod

1modprobe -r ipip
2cd /etc/cni/net.d/
3kubectl delete -f calico.yaml

1cd /var/lib/cni
2rm <config file>
3cd /etc/cni/net.d
4rm <config file>
5ip link delete cni0 #Sandbox

1kubectl drain <node name> --delete-local-data --force --ignore-daemonsets
2kubeadm reset
3cd /etc/cni/net.d/
4rm <config file>
5lsof -i :6443|grep -v "PID"|awk "{print "kill -9",$2}"|sh
6iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
7ipvsadm -C
8kubectl delete node <node name>

1kubectl taint nodes --all node-role.kubernetes.io/master-

1kubeadm certs check-expiration
2kubeadm certs renew all