小結

在Linux環境中對AWS CLI和EKSCTL的客戶端進行了設置。

過程

安裝AWS CLI

使用以下指令安裝：

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

安裝EKSCTL

使用以下指令安裝：

# for ARM systems, set ARCH to: `arm64`, `armv6` or `armv7`
ARCH=amd64
PLATFORM=$(uname -s)_$ARCHcurl -sLO "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_$PLATFORM.tar.gz"# (Optional) Verify checksum
curl -sL "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_checksums.txt" | grep $PLATFORM | sha256sum --checktar -xzf eksctl_$PLATFORM.tar.gz -C /tmp && rm eksctl_$PLATFORM.tar.gzsudo mv /tmp/eksctl /usr/local/bin

在兩個Kubernetes Cluster之間切換

在本地環境中的一個Kubernetes Cluster，在AWS中也有一個Kubernetes Cluster，兩個環境之間進行切換：

查看兩個環境：

[root@Master ~]# kubectl config get-contexts
CURRENT   NAME                                                             CLUSTER                                   AUTHINFO                                                         NAMESPACE
*         kubernetes-admin@kubernetes                                      kubernetes                                kubernetes-admin                                                 xxx@yyy@john-1-cluster.ap-southeast-1.eksctl.io   john-1-cluster.ap-southeast-1.eksctl.io   xxx@yyy@john-1-cluster.ap-southeast-1.eksctl.io 

目前是本地環境，切換至AWS:

[root@Master ~]# kubectl config use-context xxx@yyy@john-1-cluster.ap-southeast-1.eksctl.io
Switched to context "xxx@yyy@john-1-cluster.ap-southeast-1.eksctl.io".
[root@Master ~]# 

查看AWS Kubernetes運行狀態：

[root@Master ~]# kubectl get nodes
NAME                                                STATUS   ROLES    AGE     VERSION
ip-192-168-42-199.ap-southeast-1.compute.internal   Ready    <none>   3m15s   v1.27.7-eks-e71965b
ip-192-168-7-243.ap-southeast-1.compute.internal    Ready    <none>   3m11s   v1.27.7-eks-e71965b
[root@Master ~]# kubectl get pods -o wide -A
NAMESPACE     NAME                              READY   STATUS    RESTARTS   AGE   IP               NODE                                                NOMINATED NODE   READINESS GATES
kube-system   aws-node-9nzj5                    1/1     Running   0          36m   192.168.7.243    ip-192-168-7-243.ap-southeast-1.compute.internal    <none>           <none>
kube-system   aws-node-wl6h4                    1/1     Running   0          36m   192.168.42.199   ip-192-168-42-199.ap-southeast-1.compute.internal   <none>           <none>
kube-system   coredns-66dddcb88c-lv9hb          1/1     Running   0          44m   192.168.44.60    ip-192-168-42-199.ap-southeast-1.compute.internal   <none>           <none>
kube-system   coredns-66dddcb88c-r2vh9          1/1     Running   0          44m   192.168.45.98    ip-192-168-42-199.ap-southeast-1.compute.internal   <none>           <none>
kube-system   kube-proxy-9sd55                  1/1     Running   0          36m   192.168.7.243    ip-192-168-7-243.ap-southeast-1.compute.internal    <none>           <none>
kube-system   kube-proxy-9tmjs                  1/1     Running   0          36m   192.168.42.199   ip-192-168-42-199.ap-southeast-1.compute.internal   <none>           <none>[root@Master ~]# kubectl top nodes
NAME                                                CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   
ip-192-168-42-199.ap-southeast-1.compute.internal   18m          0%     448Mi           6%        
ip-192-168-7-243.ap-southeast-1.compute.internal    20m          1%     425Mi           6%    

參考

Install or update the latest version of the AWS CLI
Getting started with Amazon EKS – eksctl
EKSCTL安裝
Kubenetes Configure Access to Multiple Clusters