如何升级 Kubernetes 集群

云计算 2023-01-04 大树 手机阅读

升级思路是，驱逐负载、摘除流量之后，先升级控制节点，后升级工作节点。

1. 查看集群版本

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kubectl version

Client Version: version.Info{Major:"1", Minor:"20", GitVersion:"v1.20.4", GitCommit:"e87da0bd6e03ec3fea7933c4b5263d151aafd07c", GitTreeState:"clean", BuildDate:"2021-02-18T16:12:00Z", GoVersion:"go1.15.8", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.0", GitCommit:"c2b5237ccd9c0f1d600d3072634ca66cefdf272f", GitTreeState:"clean", BuildDate:"2021-08-04T17:57:25Z", GoVersion:"go1.16.6", Compiler:"gc", Platform:"linux/amd64"}

3. 查找目标版本的 kubeadm

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yum list --showduplicates kubeadm --disableexcludes=kubernetes

...
kubeadm.x86_64              1.23.4-0             kubernetes

4. 升级 Kubeadm

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yum remove -y kubeadm
yum install -y kubeadm-1.23.4-0 --disableexcludes=kubernetes

5. 查看升级计划