在CentOS上部署Kubernetes(k8s)集群是一个涉及多个步骤的过程,以下是详细的步骤指南:
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
swapoff -a
sed -i 's/.*swap.*/#&/' /etc/fstab
hostnamectl set-hostname k8s-master
/etc/hosts
文件,指定各节点的IP地址和主机名。yum install -y ntpdate
ntpdate ntp.aliyun.com
curl https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
yum install -y docker-ce docker-ce-cli containerd.io
systemctl start docker
systemctl enable docker
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
EOF
yum install -y kubelet kubeadm kubectl
systemctl enable kubelet
systemctl start kubelet
初始化Master节点:
kubeadm init --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=Master_IP
其中 Master_IP
是Master节点的IP地址。
配置kubectl:
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://docs.projectcalico.org/manifests/calico.yaml
kubectl get nodes
kubectl get pods --all-namespaces
在每个Worker节点上执行以下命令:
# 获取加入令牌
kubeadm token create --print-join-command
# 在工作节点上执行加入命令
sudo kubeadm join Master_IP:6443 --token <TOKEN> --discovery-token-ca-cert-hash sha256:<HASH>
sudo yum update -y
sudo crontab -e
添加定时任务来检查更新和重启服务。