kuberadm集群升级

升级kubernetes集群

注意不能跨版本升级

比如1.13.x　要先升级到1.14.x，不能直接升级到1.15.x

举例说明升级到1.15，和1.14有些参数不一样，具体看官网:

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade-1-14/

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade-1-15/

升级步骤

升级kuberadm

yum install -y cri-tools-1.12.0-0.x86_64.rpm kubeadm-1.15.0-0.x86_64.rpm kubectl-1.15.0-0.x86_64.rpm kubelet-1.15.0-0.x86_64.rpm kubernetes-cni-0.7.5-0.x86_64.rpm

　

升级控制节点

kubeadm upgrade plan

kubeadm upgrade apply v1.15.0

systemctl daemon-reload

systemctl restart kubelet

　　

升级工作节点

kubeadm upgrade node #这里和升级1.14不一样，kubeadm upgrade node config --kubelet-version v1.14.3
systemctl daemon-reload

systemctl restart kubelet