|NO.Z.00100|——————————|^^ 升級 ^^|——|KuberNetes&二進位制升級.V11|-----------------------|kubernetes_Master|kubelet.v1.17.0——>v1.19.5|

一、kubernetes升級kubelet.v1.17.0——>v1.19.5

### --- 下線kubernetes.node節點：k8s-master01
~~~     # 下線node節點k8s-master01：把k8s-master01設定成不可排程狀態
~~~     注：--delete-local-data：將本地資料刪除掉
~~~     注：--ignore-daemonsets：將daemonsets忽略掉； 在建立daemonsets容器的時候會給pod打一個標籤，ischeduling的一個標籤
~~~     注：drain：也是給node節點的ischeduling標籤，master02有這個標籤，而--ignore-daemonsets容忍了這個標籤，它會一直在上面執行，變成死迴圈，所以把daemonset忽略掉
~~~     注：繫結節點，不用去漂移，直接重啟即可。

[root@k8s-master01 ~]# kubectl drain k8s-master01 --delete-local-data --force --ignore-daemonsets
node/k8s-master01 cordoned

### --- 檢視節點的狀態
~~~     注：k8s-master02處於不可排程狀態

[root@k8s-master01 ~]# kubectl get node
NAME           STATUS                     ROLES    AGE   VERSION
k8s-master01   Ready,SchedulingDisabled   <none>   54d   v1.17.0
k8s-master02   Ready                      <none>   54d   v1.17.0
k8s-master03   Ready                      <none>   54d   v1.17.0
k8s-node01     Ready                      <none>   54d   v1.17.0
k8s-node02     Ready                      <none>   54d   v1.17.0

### --- 檢視k8s-master02上是否執行容器
~~~     注：k8s-master01節點的pod全部驅逐

[root@k8s-master01 ~]# kubectl get po --all-namespaces -owide
NAMESPACE              NAME                                         READY   STATUS    RESTARTS   AGE     IP              NODE           NOMINATED NODE   READINESS GATES
default                busybox                                      1/1     Running   33         54d     172.18.195.39   k8s-master03   <none>           <none>
default                demo-nginx-6bdcdcc585-f574t                  2/2     Running   0          2m38s   172.18.195.43   k8s-master03   <none>           <none>
default                demo-nginx-6bdcdcc585-z9h5r                  2/2     Running   2          3d      172.25.92.115   k8s-master02   <none>           <none>
default                nginx-78658dcf78-87gqv                       2/2     Running   12         3d      172.18.195.40   k8s-master03   <none>           <none>
default                nginx-78658dcf78-v98kz                       2/2     Running   26         3d2h    172.25.92.116   k8s-master02   <none>           <none>

二、kubernetes.node節點升級kubelet：k8s-master01

### --- 檢視kubelet版本

[root@k8s-master01 ~]# /usr/local/bin/kubelet --version
Kubernetes v1.17.0

### --- 停止執行kubelet服務

[root@k8s-master01 ~]# systemctl stop kubelet

### --- 備份kubelet服務

[root@k8s-master01 ~]# which kubelet
/usr/local/bin/kubelet
[root@k8s-master01 ~]# mkdir /usr/local/bin/kubelet.bak
[root@k8s-master01 ~]# cp /usr/local/bin/kubelet /usr/local/bin/kubelet.bak/

### --- 升級kubelet服務

[root@k8s-master01 ~]# cp -rp upgrade/master/kubernetes/server/bin/kubelet /usr/local/bin/
cp: overwrite ‘/usr/local/bin/kubelet’? y

### --- 檢視kubelet版本

[root@k8s-node01 ~]# /usr/local/bin/kube-proxy --version
Kubernetes v1.19.5

### --- 啟動kubelet服務

[root@k8s-master01 ~]# systemctl daemon-reload
[root@k8s-master01 ~]# systemctl restart kubelet

三、將kubernetes.node節點k8s-master01加入到叢集中

### --- 上線node節點k8s-master01加入到叢集中

[root@k8s-master01 ~]# kubectl uncordon k8s-master01
node/k8s-master01 uncordoned

### --- 檢視kubernetes叢集kubelet版本
~~~     注：k8s-master01版本的kubelet版本為v1.19.5，其它節點版本號沒有發生變化 

[root@k8s-master01 ~]# kubectl get node
NAME           STATUS   ROLES    AGE   VERSION
k8s-master01   Ready    <none>   54d   v1.19.5
k8s-master02   Ready    <none>   54d   v1.17.0
k8s-master03   Ready    <none>   54d   v1.17.0
k8s-node01     Ready    <none>   54d   v1.17.0
k8s-node02     Ready    <none>   54d   v1.17.0

===============================END===============================

Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart ——W.S.Landor

來自為知筆記(Wiz)

|NO.Z.00100|——————————|^^ 升級 ^^|——|KuberNetes&二進位制升級.V11|-----------------------|kubernetes_Master|kubelet.v1.17.0——>v1.19.5|

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