<#import "/templates/guide.adoc" as tmpl>
<#import "/templates/links.adoc" as links>

<@tmpl.guide
title="Bring site online"
summary="This guide describes how to bring a site online so that it can process client requests." >

== When to use this procedure

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.

== Procedure

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

=== Global Accelerator

. Determine the ARN of the Network Load Balancer (NLB) associated with the site to be brought online
+
<#include "partials/accelerator/nlb-arn.adoc" />
+
. Update the Accelerator EndpointGroup to include both sites

<#include "partials/accelerator/endpoint-group.adoc" />
+
.Output:
[source,bash]
----
{
    "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
        }
    ]
}
----
+
.. Update the EndpointGroup to include the existing Endpoint and the NLB retrieved in step 1.
+
.Command:
[source,bash]
----
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
    }
  ]
'
----

</@tmpl.guide>