將站點離線

確定要保持上線的站點相關聯的網路負載平衡器（NLB）的 ARN

命令

NAMESPACE= (1)
REGION= (2)
HOSTNAME=$(kubectl -n $NAMESPACE get svc accelerator-loadbalancer --template="{{range .status.loadBalancer.ingress}}{{.hostname}}{{end}}")
aws elbv2 describe-load-balancers \
  --query "LoadBalancers[?DNSName=='${HOSTNAME}'].LoadBalancerArn" \
  --region ${REGION} \
  --output text

1	包含 Keycloak 部署的 Kubernetes 命名空間
2	託管 Kubernetes 叢集的 AWS 區域

輸出

arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d

更新 Accelerator EndpointGroup，使其僅包含單一站點

列出 Global Accelerator 的 EndpointGroup 中的當前端點

命令

ACCELERATOR_NAME= (1)
ACCELERATOR_ARN=$(aws globalaccelerator list-accelerators \
  --query "Accelerators[?Name=='${ACCELERATOR_NAME}'].AcceleratorArn" \
  --region us-west-2 \ (2)
  --output text
)
LISTENER_ARN=$(aws globalaccelerator list-listeners \
  --accelerator-arn ${ACCELERATOR_ARN} \
  --query "Listeners[*].ListenerArn" \
  --region us-west-2 \
  --output text
)
aws globalaccelerator list-endpoint-groups \
  --listener-arn ${LISTENER_ARN} \
  --region us-west-2

1	要更新的 Accelerator 名稱
2	查詢 AWS Global Accelerators 時，區域必須始終設定為 us-west-2

輸出

{
    "EndpointGroups": [
        {
            "EndpointGroupArn": "arn:aws:globalaccelerator::606671647913:accelerator/d280fc09-3057-4ab6-9330-6cbf1f450748/listener/8769072f/endpoint-group/a30b64ec1700",
            "EndpointGroupRegion": "eu-west-1",
            "EndpointDescriptions": [
                {
                    "EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d",
                    "Weight": 128,
                    "HealthState": "HEALTHY",
                    "ClientIPPreservationEnabled": false
                },
                {
                    "EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a3c75f239541c4a6e9c48cf8d48d602f/5ba333e87019ccf0",
                    "Weight": 128,
                    "HealthState": "HEALTHY",
                    "ClientIPPreservationEnabled": false
                }
            ],
            "TrafficDialPercentage": 100.0,
            "HealthCheckPort": 443,
            "HealthCheckProtocol": "TCP",
            "HealthCheckIntervalSeconds": 30,
            "ThresholdCount": 3
        }
    ]
}

更新 EndpointGroup，使其僅包含在步驟 1 中檢索到的 NLB。

命令

aws globalaccelerator update-endpoint-group \
  --endpoint-group-arn arn:aws:globalaccelerator::606671647913:accelerator/d280fc09-3057-4ab6-9330-6cbf1f450748/listener/8769072f/endpoint-group/a30b64ec1700 \
  --region us-west-2 \
  --endpoint-configurations '
  [
    {
        "EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d",
        "Weight": 128,
        "ClientIPPreservationEnabled": false
    }
  ]
'

何時使用此程序

程序

Global Accelerator