k8s集群部署--centos7

sudo kubeadm reset -f
sudo rm -rvf $HOME/.kube
sudo rm -rvf ~/.kube/
sudo rm -rvf /etc/kubernetes/
sudo rm -rvf /etc/systemd/system/kubelet.service.d
sudo rm -rvf /etc/systemd/system/kubelet.service
sudo rm -rvf /usr/bin/kube*
sudo rm -rvf /etc/cni
sudo rm -rvf /opt/cni
sudo rm -rvf /var/lib/etcd
sudo rm -rvf /var/etcd
sudo apt-get remove kube*

yum remove kubelet-1.14.0 kubeadm-版本号 kubectl-版本号

cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-\$basearch
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
exclude=kubelet kubeadm kubectl
EOF

# 将 SELinux 设置为 permissive 模式（相当于将其禁用）
setenforce 0
sed -i ‘s/^SELINUX=enforcing$/SELINUX=permissive/‘ /etc/selinux/config

yum install -y kubelet-1.19.6 kubeadm-1.19.6 kubectl-1.19.6 --disableexcludes=kubernetes
systemctl enable --now kubelet

kubeadm init --apiserver-advertise-address=10.90.12.134 --image-repository  镜像源  --kubernetes-version v1.19.6 --pod-network-cidr=10.244.0.0/16 --control-plane-endpoint=10.90.12.134:6443 --upload-certs

初始化之后获取
其他master节点加入:

  kubeadm join 10.90.12.134:6443 --token awisze.sor7huusn4w5hcy0     --discovery-token-ca-cert-hash sha256:5d97fc35f8c4bde44ae83c7877b4e405178510762e4bd8f9d43dd1b8205e47fd     --control-plane --certificate-key 2e6ab32bcbdb852fa99dff783225e4f5308aa36a11ca0836a3f50140b95f726b

Please note that the certificate-key gives access to cluster sensitive data, keep it secret!
As a safeguard, uploaded-certs will be deleted in two hours; If necessary, you can use
"kubeadm init phase upload-certs --upload-certs" to reload certs afterward.

worker nodes 加入命令

kubeadm join 10.90.12.134:6443 --token awisze.sor7huusn4w5hcy0     --discovery-token-ca-cert-hash sha256:5d97fc35f8c4bde44ae83c7877b4e405178510762e4bd8f9d43dd1b8205e47fd 

rm -rf $HOME/.kube

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

kubectl apply -f  https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

sudo ifconfig cni0 down 
sudo ip link delete cni0