【kubernetes】kubeadm 集群升级

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简介: 【kubernetes】kubeadm 集群升级

三年前刚刚接触 kubernetes 不久,搭建的线上交易会平台装的 kubernetes 集群使用的是 kubeadm。每年都会做一次集群升级、刷新许可证,今天再做一次升级。

官方参考链接:升级 kubeadm 集群



一、升级 kubeadm


1. 查看 kubeadm 版本


[root@xxx install]# kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.16", GitCommit:"7a98bb2b7c9112935387825f2fce1b7d40b76236", GitTreeState:"clean", BuildDate:"2021-02-17T11:58:49Z", GoVersion:"go1.13.15", Compiler:"gc", Platform:"linux/amd64"}


2. 列出 kubeadm 版本

[root@xxxxx install]# yum list --showduplicates kubeadm --disableexcludes=kubernetes
Loaded plugins: fastestmirror, langpacks
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Determining fastest mirrors
Installed Packages
kubeadm.x86_64                                                                             1.18.16-0                                                                              @kubernetes
Available Packages
kubeadm.x86_64                                                                             1.17.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.7-1                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.17.11-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.17.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.17.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.17.14-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.17.15-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.17.16-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.17.17-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.4-1                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.18.10-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.14-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.15-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.16-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.17-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.18-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.19-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.18.20-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.19.10-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.11-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.14-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.15-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.19.16-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.20.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.20.10-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.20.11-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.20.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.20.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.20.14-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.20.15-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.21.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.21.10-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.21.11-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.21.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.21.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.21.14-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.22.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.22.10-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.22.11-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.22.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.22.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.22.14-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.22.15-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.23.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.8-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.9-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.23.10-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.23.11-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.23.12-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.23.13-0                                                                              kubernetes 
kubeadm.x86_64                                                                             1.24.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.3-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.4-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.5-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.6-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.24.7-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.25.0-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.25.1-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.25.2-0                                                                               kubernetes 
kubeadm.x86_64                                                                             1.25.3-0                                                                               kubernetes



3. 升级 kubeadm

注意:kubeadm 是不支持跨版本的升级的,所以我当前是1.18 版本,我升级时最高只能升级到1.19版本

[root@xxxxx install]# yum install -y kubeadm-1.19.16-0  --disableexcludes=kubernetes 
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package kubeadm.x86_64 0:1.18.16-0 will be updated
---> Package kubeadm.x86_64 0:1.19.16-0 will be an update
--> Processing Dependency: kubelet >= 1.19.0 for package: kubeadm-1.19.16-0.x86_64
--> Processing Dependency: kubectl >= 1.19.0 for package: kubeadm-1.19.16-0.x86_64
--> Processing Dependency: cri-tools >= 1.19.0 for package: kubeadm-1.19.16-0.x86_64
--> Running transaction check
---> Package cri-tools.x86_64 0:1.13.0-0 will be updated
---> Package cri-tools.x86_64 0:1.26.0-0 will be an update
---> Package kubectl.x86_64 0:1.17.1-0 will be updated
---> Package kubectl.x86_64 0:1.26.1-0 will be an update
---> Package kubelet.x86_64 0:1.17.1-0 will be updated
---> Package kubelet.x86_64 0:1.26.1-0 will be an update
--> Processing Dependency: kubernetes-cni >= 1.2.0 for package: kubelet-1.26.1-0.x86_64
--> Running transaction check
---> Package kubernetes-cni.x86_64 0:0.8.7-0 will be updated
---> Package kubernetes-cni.x86_64 0:1.2.0-0 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
=============================================================================================================================================================================================
 Package                                          Arch                                     Version                                        Repository                                    Size
=============================================================================================================================================================================================
Updating:
 kubeadm                                          x86_64                                   1.19.16-0                                      kubernetes                                   8.3 M
Updating for dependencies:
 cri-tools                                        x86_64                                   1.26.0-0                                       kubernetes                                   8.6 M
 kubectl                                          x86_64                                   1.26.1-0                                       kubernetes                                    11 M
 kubelet                                          x86_64                                   1.26.1-0                                       kubernetes                                    22 M
 kubernetes-cni                                   x86_64                                   1.2.0-0                                        kubernetes                                    17 M
Transaction Summary
=============================================================================================================================================================================================
Upgrade  1 Package (+4 Dependent packages)
Total download size: 66 M
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/5): 6e8fc5b12b06a19517237776f07bf8f171fbfec1e0345232ea945264d84790c3-kubeadm-1.19.16-0.x86_64.rpm                                                                  | 8.3 MB  00:01:13     
(2/5): 3f5ba2b53701ac9102ea7c7ab2ca6616a8cd5966591a77577585fde1c434ef74-cri-tools-1.26.0-0.x86_64.rpm                                                                 | 8.6 MB  00:01:15     
(3/5): 7c5ee9df7097fe780a8fd2e87541d5c4dba86120a96aec5eb4c9517ee88148ee-kubectl-1.26.1-0.x86_64.rpm                                                                   |  11 MB  00:01:33     
(4/5): 2dcb121663166d78efad52d20fcbdc6f23fe67665d319930905a3e722e05ec30-kubelet-1.26.1-0.x86_64.rpm                                                                   |  22 MB  00:03:11     
(5/5): 0f2a2afd740d476ad77c508847bad1f559afc2425816c1f2ce4432a62dfe0b9d-kubernetes-cni-1.2.0-0.x86_64.rpm                                                             |  17 MB  00:02:27     
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                                                        216 kB/s |  66 MB  00:05:13     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Updating   : kubelet-1.26.1-0.x86_64                                                                                                                                                  1/10 
  Updating   : kubernetes-cni-1.2.0-0.x86_64                                                                                                                                            2/10 
  Updating   : cri-tools-1.26.0-0.x86_64                                                                                                                                                3/10 
  Updating   : kubectl-1.26.1-0.x86_64                                                                                                                                                  4/10 
  Updating   : kubeadm-1.19.16-0.x86_64                                                                                                                                                 5/10 
  Cleanup    : kubeadm-1.18.16-0.x86_64                                                                                                                                                 6/10 
  Cleanup    : kubelet-1.17.1-0.x86_64                                                                                                                                                  7/10 
  Cleanup    : kubernetes-cni-0.8.7-0.x86_64                                                                                                                                            8/10 
  Cleanup    : cri-tools-1.13.0-0.x86_64                                                                                                                                                9/10 
  Cleanup    : kubectl-1.17.1-0.x86_64                                                                                                                                                 10/10 
  Verifying  : kubectl-1.26.1-0.x86_64                                                                                                                                                  1/10 
  Verifying  : cri-tools-1.26.0-0.x86_64                                                                                                                                                2/10 
  Verifying  : kubernetes-cni-1.2.0-0.x86_64                                                                                                                                            3/10 
  Verifying  : kubeadm-1.19.16-0.x86_64                                                                                                                                                 4/10 
  Verifying  : kubelet-1.26.1-0.x86_64                                                                                                                                                  5/10 
  Verifying  : kubernetes-cni-0.8.7-0.x86_64                                                                                                                                            6/10 
  Verifying  : kubectl-1.17.1-0.x86_64                                                                                                                                                  7/10 
  Verifying  : cri-tools-1.13.0-0.x86_64                                                                                                                                                8/10 
  Verifying  : kubeadm-1.18.16-0.x86_64                                                                                                                                                 9/10 
  Verifying  : kubelet-1.17.1-0.x86_64                                                                                                                                                 10/10 
Updated:
  kubeadm.x86_64 0:1.19.16-0                                                                                                                                                                 
Dependency Updated:
  cri-tools.x86_64 0:1.26.0-0                    kubectl.x86_64 0:1.26.1-0                    kubelet.x86_64 0:1.26.1-0                    kubernetes-cni.x86_64 0:1.2.0-0                   
Complete!



4. 验证升级

[root@xxxxx  install]# kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.16", GitCommit:"e37e4ab4cc8dcda84f1344dda47a97bb1927d074", GitTreeState:"clean", BuildDate:"2021-10-27T16:24:44Z", GoVersion:"go1.15.15", Compiler:"gc", Platform:"linux/amd64"}
  • 可以看到,这里已经成功从1.18版本升级到了1.19版本




二、升级集群


1. 列出升级计划

[root@xxxxx install]# kubeadm upgrade plan
[upgrade/config] Making sure the configuration is correct:
[upgrade/config] Reading configuration from the cluster...
[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
[preflight] Running pre-flight checks.
[upgrade] Running cluster health checks
[upgrade] Fetching available versions to upgrade to
[upgrade/versions] Cluster version: v1.18.16
[upgrade/versions] kubeadm version: v1.19.16
I0120 17:01:26.289546   19651 version.go:255] remote version is much newer: v1.26.1; falling back to: stable-1.19
[upgrade/versions] Latest stable version: v1.19.16
[upgrade/versions] Latest stable version: v1.19.16
[upgrade/versions] Latest version in the v1.18 series: v1.18.20
[upgrade/versions] Latest version in the v1.18 series: v1.18.20
Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
COMPONENT   CURRENT       AVAILABLE
kubelet     2 x v1.17.1   v1.18.20
Upgrade to the latest version in the v1.18 series:
COMPONENT                 CURRENT    AVAILABLE
kube-apiserver            v1.18.16   v1.18.20
kube-controller-manager   v1.18.16   v1.18.20
kube-scheduler            v1.18.16   v1.18.20
kube-proxy                v1.18.16   v1.18.20
CoreDNS                   1.6.7      1.7.0
etcd                      3.4.3-0    3.4.3-0
You can now apply the upgrade by executing the following command:
        kubeadm upgrade apply v1.18.20
_____________________________________________________________________
Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply':
COMPONENT   CURRENT       AVAILABLE
kubelet     2 x v1.17.1   v1.19.16
Upgrade to the latest stable version:
COMPONENT                 CURRENT    AVAILABLE
kube-apiserver            v1.18.16   v1.19.16
kube-controller-manager   v1.18.16   v1.19.16
kube-scheduler            v1.18.16   v1.19.16
kube-proxy                v1.18.16   v1.19.16
CoreDNS                   1.6.7      1.7.0
etcd                      3.4.3-0    3.4.13-0
You can now apply the upgrade by executing the following command:
        kubeadm upgrade apply v1.19.16
_____________________________________________________________________
The table below shows the current state of component configs as understood by this version of kubeadm.
Configs that have a "yes" mark in the "MANUAL UPGRADE REQUIRED" column require manual config upgrade or
resetting to kubeadm defaults before a successful upgrade can be performed. The version to manually
upgrade to is denoted in the "PREFERRED VERSION" column.
API GROUP                 CURRENT VERSION   PREFERRED VERSION   MANUAL UPGRADE REQUIRED
kubeproxy.config.k8s.io   v1alpha1          v1alpha1            no
kubelet.config.k8s.io     v1beta1           v1beta1             no
_____________________________________________________________________


2. 升级kubernetes 集群

[root@xxxxx install]# kubeadm upgrade apply v1.19.16 --force
[upgrade/config] Making sure the configuration is correct:
[upgrade/config] Reading configuration from the cluster...
[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'
[preflight] Running pre-flight checks.
[upgrade] Running cluster health checks
[upgrade/version] You have chosen to change the cluster version to "v1.19.16"
[upgrade/versions] Cluster version: v1.18.16
[upgrade/versions] kubeadm version: v1.19.16
[upgrade/version] Found 1 potential version compatibility errors but skipping since the --force flag is set: 
        - There are kubelets in this cluster that are too old that have these versions [v1.17.1]
[upgrade/prepull] Pulling images required for setting up a Kubernetes cluster
[upgrade/prepull] This might take a minute or two, depending on the speed of your internet connection
[upgrade/prepull] You can also perform this action in beforehand using 'kubeadm config images pull'
[upgrade/apply] Upgrading your Static Pod-hosted control plane to version "v1.19.16"...
Static pod: kube-apiserver-xxxxxx hash: 797734e8767dae171f91b69b7666c850
Static pod: kube-controller-manager-xxxxx hash: 883239f813b1769b1503caa752eee48c
Static pod: kube-scheduler-xxxxx hash: 05c41878f5fac1c1d0cf49da86047e1d
[upgrade/etcd] Upgrading to TLS for etcd
Static pod: etcd-xxxx hash: 1ffc829a4d3541b26460c8d579426907
[upgrade/staticpods] Preparing for "etcd" upgrade
[upgrade/staticpods] Renewing etcd-server certificate
[upgrade/staticpods] Renewing etcd-peer certificate
[upgrade/staticpods] Renewing etcd-healthcheck-client certificate
[upgrade/staticpods] Moved new manifest to "/etc/kubernetes/manifests/etcd.yaml" and backed up old manifest to "/etc/kubernetes/tmp/kubeadm-backup-manifests-2023-01-20-17-06-51/etcd.yaml"
[upgrade/staticpods] Waiting for the kubelet to restart the component
[upgrade/staticpods] This might take a minute or longer depending on the component/version gap (timeout 5m0s)
Static pod: etcd-xxxxx hash: 1ffc829a4d3541b26460c8d579426907
Static pod: etcd-xxxx hash: f5f7eff9bafb27bc6001310fd32d88db
[apiclient] Found 1 Pods for label selector component=etcd
[upgrade/staticpods] Component "etcd" upgraded successfully!
[upgrade/etcd] Waiting for etcd to become available
[upgrade/staticpods] Writing new Static Pod manifests to "/etc/kubernetes/tmp/kubeadm-upgraded-manifests086047809"
[upgrade/staticpods] Preparing for "kube-apiserver" upgrade
[upgrade/staticpods] Renewing apiserver certificate
[upgrade/staticpods] Renewing apiserver-kubelet-client certificate
[upgrade/staticpods] Renewing front-proxy-client certificate
[upgrade/staticpods] Renewing apiserver-etcd-client certificate
[upgrade/staticpods] Moved new manifest to "/etc/kubernetes/manifests/kube-apiserver.yaml" and backed up old manifest to "/etc/kubernetes/tmp/kubeadm-backup-manifests-2023-01-20-17-06-51/kube-apiserver.yaml"
[upgrade/staticpods] Waiting for the kubelet to restart the component
[upgrade/staticpods] This might take a minute or longer depending on the component/version gap (timeout 5m0s)
Static pod: kube-apiserver-xxxx hash: 797734e8767dae171f91b69b7666c850
Static pod: kube-apiserver-xxxxx hash: 797734e8767dae171f91b69b7666c850
Static pod: kube-apiserver-xxxx hash: 797734e8767dae171f91b69b7666c850
Static pod: kube-apiserver-xxxx hash: bb40b51157c0de652b015900b3f618bd
[apiclient] Found 1 Pods for label selector component=kube-apiserver
[upgrade/staticpods] Component "kube-apiserver" upgraded successfully!
[upgrade/staticpods] Preparing for "kube-controller-manager" upgrade
[upgrade/staticpods] Renewing controller-manager.conf certificate
[upgrade/staticpods] Moved new manifest to "/etc/kubernetes/manifests/kube-controller-manager.yaml" and backed up old manifest to "/etc/kubernetes/tmp/kubeadm-backup-manifests-2023-01-20-17-06-51/kube-controller-manager.yaml"
[upgrade/staticpods] Waiting for the kubelet to restart the component
[upgrade/staticpods] This might take a minute or longer depending on the component/version gap (timeout 5m0s)
Static pod: kube-controller-manager-xxxx hash: 883239f813b1769b1503caa752eee48c
Static pod: kube-controller-manager-xxxx hash: 2b1b8618c20a834b73cde0592827bf54
[apiclient] Found 1 Pods for label selector component=kube-controller-manager
[upgrade/staticpods] Component "kube-controller-manager" upgraded successfully!
[upgrade/staticpods] Preparing for "kube-scheduler" upgrade
[upgrade/staticpods] Renewing scheduler.conf certificate
[upgrade/staticpods] Moved new manifest to "/etc/kubernetes/manifests/kube-scheduler.yaml" and backed up old manifest to "/etc/kubernetes/tmp/kubeadm-backup-manifests-2023-01-20-17-06-51/kube-scheduler.yaml"
[upgrade/staticpods] Waiting for the kubelet to restart the component
[upgrade/staticpods] This might take a minute or longer depending on the component/version gap (timeout 5m0s)
Static pod: kube-scheduler-xxxxx hash: 05c41878f5fac1c1d0cf49da86047e1d
Static pod: kube-scheduler-xxxx hash: fb04d3c61e9503154c23197a2d7e8243
[apiclient] Found 1 Pods for label selector component=kube-scheduler
[upgrade/staticpods] Component "kube-scheduler" upgraded successfully!
[upload-config] Storing the configuration used in ConfigMap "kubeadm-config" in the "kube-system" Namespace
[kubelet] Creating a ConfigMap "kubelet-config-1.19" in namespace kube-system with the configuration for the kubelets in the cluster
[kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml"
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to get nodes
[bootstrap-token] configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
[bootstrap-token] configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
[bootstrap-token] configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
[addons] Applied essential addon: CoreDNS
[addons] Applied essential addon: kube-proxy
[upgrade/successful] SUCCESS! Your cluster was upgraded to "v1.19.16". Enjoy!
[upgrade/kubelet] Now that your control plane is upgraded, please proceed with upgrading your kubelets if you haven't already done so.



3. 验证升级

[root@xxxx install]# kubectl version --output=json
{
  "clientVersion": {
    "major": "1",
    "minor": "26",
    "gitVersion": "v1.26.1",
    "gitCommit": "8f94681cd294aa8cfd3407b8191f6c70214973a4",
    "gitTreeState": "clean",
    "buildDate": "2023-01-18T15:58:16Z",
    "goVersion": "go1.19.5",
    "compiler": "gc",
    "platform": "linux/amd64"
  },
  "kustomizeVersion": "v4.5.7",
  "serverVersion": {
    "major": "1",
    "minor": "19",
    "gitVersion": "v1.19.16",
    "gitCommit": "e37e4ab4cc8dcda84f1344dda47a97bb1927d074",
    "gitTreeState": "clean",
    "buildDate": "2021-10-27T16:20:18Z",
    "goVersion": "go1.15.15",
    "compiler": "gc",
    "platform": "linux/amd64"
  }
}
  • 可以看到kubernetes已经升级到1.19版本了。




三、命令概要

kubeadm version
yum list --showduplicates kubeadm --disableexcludes=kubernetes
yum install -y kubeadm-${yournextversion}  --disableexcludes=kubernetes 
kubeadm version
kubeadm upgrade plan
kubeadm upgrade apply ${yournextversion} --force
kubectl version --output=json



相关实践学习
通过Ingress进行灰度发布
本场景您将运行一个简单的应用,部署一个新的应用用于新的发布,并通过Ingress能力实现灰度发布。
容器应用与集群管理
欢迎来到《容器应用与集群管理》课程,本课程是“云原生容器Clouder认证“系列中的第二阶段。课程将向您介绍与容器集群相关的概念和技术,这些概念和技术可以帮助您了解阿里云容器服务ACK/ACK Serverless的使用。同时,本课程也会向您介绍可以采取的工具、方法和可操作步骤,以帮助您了解如何基于容器服务ACK Serverless构建和管理企业级应用。 学习完本课程后,您将能够: 掌握容器集群、容器编排的基本概念 掌握Kubernetes的基础概念及核心思想 掌握阿里云容器服务ACK/ACK Serverless概念及使用方法 基于容器服务ACK Serverless搭建和管理企业级网站应用
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