要在CentOS上扩展Kubernetes集群,可以按照以下步骤进行:
sudo yum install -y docker
sudo systemctl start docker
sudo systemctl enable docker
sudo yum install -y kubelet kubeadm
sudo systemctl start kubelet
sudo systemctl enable kubelet
kubeadm token create
命令生成join token。kubeadm token create --print-join-command --ttl 0
sudo kubeadm join <master-ip>:<master-port> --token <token> --discovery-token-ca-cert-hash sha256:<hash>
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
kubectl scale deployment <deployment-name> --replicas=<number-of-replicas>
kubectl apply -f <vpa-config-file>
kubectl autoscale deployment <deployment-name> --cpu-percent=<target-cpu-percent> --min=<min-replicas> --max=<max-replicas>
在进行扩展之前,建议仔细计划并测试,以确保操作顺利进行并不会影响到应用程序。监控集群的状态和性能,确保扩展后的集群能够满足工作负载的需求。