Ch9 建立 Fargate 環境

建立測試 Pod 於 Fargate 環境上

建立 Fargate 環境

在建立 EKS 叢集時，並未先建立 Fargate Profile 設定檔，因此我們需要先根據文件步驟設定此環境。

建立 Fargate Profile 並指定 namespace 名稱為 fargate-demo。

$ eksctl create fargateprofile \
    --cluster ironman \
    --name demo-profile \
    --namespace fargate-demo
2023-09-05 10:04:00 [ℹ]  deploying stack "eksctl-ironman-fargate"
2023-09-05 10:04:00 [ℹ]  waiting for CloudFormation stack "eksctl-ironman-fargate"
2023-09-05 10:04:30 [ℹ]  waiting for CloudFormation stack "eksctl-ironman-fargate"
2023-09-05 10:04:31 [ℹ]  creating Fargate profile "demo-profile" on EKS cluster "ironman"
2023-09-05 10:08:50 [ℹ]  created Fargate profile "demo-profile" on EKS cluster "ironman"

$ eksctl get fargateprofile --cluster ironman
NAME            SELECTOR_NAMESPACE      SELECTOR_LABELS POD_EXECUTION_ROLE_ARN                                                                       SUBNETS                                                                          TAGS    STATUS
demo-profile    fargate-demo            <none>          arn:aws:iam::111111111111:role/eksctl-ironman-fargate-FargatePodExecutionRole-5PV0U75S2IPH   subnet-07f96b19d78fdbb00,subnet-0a018cbbf97412fc8,subnet-06d094e3de1b4f3cf       <none>  ACTIVE

$ aws eks describe-fargate-profile --cluster-name ironman --fargate-profile-name demo-profile
{
    "fargateProfile": {
        "fargateProfileName": "demo-profile",
        "fargateProfileArn": "arn:aws:eks:eu-west-1:111111111111:fargateprofile/ironman/demo-profile/52c53266-80a0-9f2a-483d-d3589790ece4",
        "clusterName": "ironman",
        "createdAt": "2023-09-05T10:04:34.053000+00:00",
        "podExecutionRoleArn": "arn:aws:iam::111111111111:role/eksctl-ironman-fargate-FargatePodExecutionRole-5PV0U75S2IPH",
        "subnets": [
            "subnet-07f96b19d78fdbb00",
            "subnet-0a018cbbf97412fc8",
            "subnet-06d094e3de1b4f3cf"
        ],
        "selectors": [
            {
                "namespace": "fargate-demo"
            }
        ],
        "status": "ACTIVE",
        "tags": {}
    }
}

建立 fargate-ns namepsace。

$ kubectl create ns fargate-demo
namespace/fargate-demo created

驗證

分別使用 Nginx image 作為測試容器於 EC2 EKS 工作節點及 Fargate 上來進行比對：

透過 kubectl 建立 Nginx Pod 於 fargate-demo 及 default namespace。

$ kubectl run nginx --image=nginx -n fargate-demo
pod/nginx created

$ kubectl run nginx --image=nginx -n default
pod/nginx created

將 Pod 資訊輸出成 YAML 文件。

kubectl -n default get po nginx -o yaml > default-nginx.yaml
kubectl -n fargate-demo get po nginx -o yaml > fargate-nginx.yaml

透過 diff 命令比對：

$ diff fargate-nginx.yaml default-nginx.yaml
4,7c4
<   annotations:
<     CapacityProvisioned: 0.25vCPU 0.5GB
<     Logging: 'LoggingDisabled: LOGGING_CONFIGMAP_NOT_FOUND'
<   creationTimestamp: "2023-09-05T10:11:33Z"
---
>   creationTimestamp: "2023-09-05T10:11:42Z"
9d5
<     eks.amazonaws.com/fargate-profile: demo-profile
12,14c8,10
<   namespace: fargate-demo
<   resourceVersion: "5967669"
<   uid: 399813c4-9f59-4fbc-ab45-f2d8ddf77df6
---
>   namespace: default
>   resourceVersion: "5967486"
>   uid: a982f8b2-3f49-4ff9-a02b-0ac443a402f3
25c21
<       name: kube-api-access-4z6qt
---
>       name: kube-api-access-bsspj
29c25
<   nodeName: fargate-ip-192-168-125-232.eu-west-1.compute.internal
---
>   nodeName: ip-192-168-61-195.eu-west-1.compute.internal
31,32c27
<   priority: 2000001000
<   priorityClassName: system-node-critical
---
>   priority: 0
34c29
<   schedulerName: fargate-scheduler
---
>   schedulerName: default-scheduler
49c44
<   - name: kube-api-access-4z6qt
---
>   - name: kube-api-access-bsspj
70c65
<     lastTransitionTime: "2023-09-05T10:12:19Z"
---
>     lastTransitionTime: "2023-09-05T10:11:42Z"
74c69
<     lastTransitionTime: "2023-09-05T10:12:28Z"
---
>     lastTransitionTime: "2023-09-05T10:11:49Z"
78c73
<     lastTransitionTime: "2023-09-05T10:12:28Z"
---
>     lastTransitionTime: "2023-09-05T10:11:49Z"
82c77
<     lastTransitionTime: "2023-09-05T10:12:18Z"
---
>     lastTransitionTime: "2023-09-05T10:11:42Z"
86c81
<   - containerID: containerd://86443e084c72502ca087a7d7df2ea80927b526518c046bdafcb45784eeb92102
---
>   - containerID: containerd://e9ac5b39ab576c1665d55d35b69787642799379f31000566a1ec7a7e1595e0ec
96,97c91,92
<         startedAt: "2023-09-05T10:12:28Z"
<   hostIP: 192.168.125.232
---
>         startedAt: "2023-09-05T10:11:49Z"
>   hostIP: 192.168.61.195
99c94
<   podIP: 192.168.125.232
---
>   podIP: 192.168.35.142
101c96
<   - ip: 192.168.125.232
---
>   - ip: 192.168.35.142
103c98
<   startTime: "2023-09-05T10:12:19Z"
---
>   startTime: "2023-09-05T10:11:42Z"

Ch9 建立 Fargate 環境

建立 Fargate 環境​

驗證​

建立 Fargate 環境

驗證