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Chapter 14. Bringing a site online

Bring a site online so that it can process client requests.

14.1. When to use this procedure
링크 복사

This procedure describes how to re-add a Keycloak site to the Global Accelerator, after it has previously been taken offline, so that it can once again service client requests.

14.2. Procedure
링크 복사

Follow these steps to re-add a Keycloak site to the AWS Global Accelerator so that it can handle client requests.

14.2.1. Global Accelerator
링크 복사

  1. Determine the ARN of the Network Load Balancer (NLB) associated with the site to be brought online

    Command:

    NAMESPACE=
    1 
    
REGION=
    2 
    
HOSTNAME=$(oc -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
    Copy to Clipboard Toggle word wrap

    1
    The Kubernetes namespace containing the Keycloak deployment
    2
    The AWS Region hosting the Kubernetes cluster

    Output:

    arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d
    Copy to Clipboard Toggle word wrap

  2. Update the Accelerator EndpointGroup to include both sites

    1. List the current endpoints in the Global Accelerator’s EndpointGroup

      Command:

      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
      Copy to Clipboard Toggle word wrap

      1
      The name of the Accelerator to be updated
      2
      The region must always be set to us-west-2 when querying AWS Global Accelerators

      Output:

      {
    "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/a3c75f239541c4a6e9c48cf8d48d602f/5ba333e87019ccf0",
                    "Weight": 128,
                    "HealthState": "HEALTHY",
                    "ClientIPPreservationEnabled": false
                }
            ],
            "TrafficDialPercentage": 100.0,
            "HealthCheckPort": 443,
            "HealthCheckProtocol": "TCP",
            "HealthCheckIntervalSeconds": 30,
            "ThresholdCount": 3
        }
    ]
}
      Copy to Clipboard Toggle word wrap

    2. Update the EndpointGroup to include the existing Endpoint and the NLB retrieved in step 1.

      Command:

      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/a3c75f239541c4a6e9c48cf8d48d602f/5ba333e87019ccf0",
        "Weight": 128,
        "ClientIPPreservationEnabled": false
    },
    {
        "EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d",
        "Weight": 128,
        "ClientIPPreservationEnabled": false
    }
  ]
'
      Copy to Clipboard Toggle word wrap

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