Centos 7上安装Kubernetes 1.24集群

1. 禁用swap

sudo swapoff -a

2. 禁用防火墙

sudo systemctl stop firewalld
sudo systemctl disable firewalld

3. 将SELinux设置为permissive模式

sudo setenforce 0
sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config

4. 安装docker-ce

追加docker-ce的yum源，

sudo yum-config-manager \--add-repo \https://download.docker.com/linux/centos/docker-ce.reposudo bash -c 'cat<< "EOF" >> /etc/yum.repos.d/docker-ce.repo[centos-extras]
name=Centos extras - $basearch
baseurl=http://mirror.centos.org/centos/7/extras/x86_64
enabled=1
gpgcheck=1
gpgkey=http://centos.org/keys/RPM-GPG-KEY-CentOS-7
EOF'

安装最新版本docker-ce，

sudo yum install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

(Optional)安装指定版本docker-ce，

sudo yum list docker-ce --showduplicates | sort -r
sudo yum install docker-ce- docker-ce-cli- containerd.io docker-compose-plugin

安装cri-dockerd

sudo rpm -ivh https://github.com/Mirantis/cri-dockerd/releases/download/v0.2.6/cri-dockerd-0.2.6-3.el7.x86_64.rpm

启动docker并设置开始自动启动docker，

sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl start cri-docker
sudo systemctl enable cri-docker

查看docker启动状况，

sudo systemctl status docker

5. 安装kubelet kubeadm kubectl

cat <

cat <

sudo modprobe overlay
sudo modprobe br_netfilter

cat <

sysctl --system

kubeadm init --cri-socket=unix:///var/run/cri-dockerd.sock --pod-network-cidr=10.244.0.0/16

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/configkubectl taint nodes --all node-role.kubernetes.io/control-plane-
kubectl taint nodes --all node-role.kubernetes.io/master-kubectl completion bash | sudo tee /etc/bash_completion.d/kubectl > /dev/null
echo 'alias k=kubectl' >>~/.bashrc
echo 'complete -o default -F __start_kubectl k' >>~/.bashrc

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

kubectl get nodes
kubectl get pods -A