80 lines
2.8 KiB
Text
80 lines
2.8 KiB
Text
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<#import "/templates/guide.adoc" as tmpl>
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<#import "/templates/links.adoc" as links>
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<@tmpl.guide
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title="Take site offline"
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summary="This describes how to take a site offline so that it no longer processes client requests" >
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== When to use this procedure
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During the deployment lifecycle it might be required that one of the sites is temporarily taken offline
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for maintenance or to allow for software upgrades. To ensure that no user requests are routed to the site requiring
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maintenance, it is necessary for the site to be removed from your loadbalancer configuration.
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== Procedure
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Follow these steps to remove a site from the loadbalancer so that no traffic can be routed to it.
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=== Global Accelerator
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. Determine the ARN of the Network Load Balancer (NLB) associated with the site to be kept online
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+
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<#include "partials/accelerator/nlb-arn.adoc" />
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+
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. Update the Accelerator EndpointGroup to only include a single site
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+
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<#include "partials/accelerator/endpoint-group.adoc" />
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+
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.Output:
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[source,bash]
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----
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{
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"EndpointGroups": [
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{
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"EndpointGroupArn": "arn:aws:globalaccelerator::606671647913:accelerator/d280fc09-3057-4ab6-9330-6cbf1f450748/listener/8769072f/endpoint-group/a30b64ec1700",
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"EndpointGroupRegion": "eu-west-1",
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"EndpointDescriptions": [
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{
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"EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d",
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"Weight": 128,
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"HealthState": "HEALTHY",
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"ClientIPPreservationEnabled": false
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},
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{
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"EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a3c75f239541c4a6e9c48cf8d48d602f/5ba333e87019ccf0",
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"Weight": 128,
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"HealthState": "HEALTHY",
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"ClientIPPreservationEnabled": false
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}
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],
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"TrafficDialPercentage": 100.0,
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"HealthCheckPort": 443,
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"HealthCheckProtocol": "TCP",
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"HealthCheckIntervalSeconds": 30,
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"ThresholdCount": 3
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}
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]
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}
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----
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+
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.. Update the EndpointGroup to only include the NLB retrieved in step 1.
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+
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.Command:
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[source,bash]
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----
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aws globalaccelerator update-endpoint-group \
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--endpoint-group-arn arn:aws:globalaccelerator::606671647913:accelerator/d280fc09-3057-4ab6-9330-6cbf1f450748/listener/8769072f/endpoint-group/a30b64ec1700 \
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--region us-west-2 \
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--endpoint-configurations '
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[
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{
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"EndpointId": "arn:aws:elasticloadbalancing:eu-west-1:606671647913:loadbalancer/net/a49e56e51e16843b9a3bc686327c907b/9b786f80ed4eba3d",
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"Weight": 128,
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"ClientIPPreservationEnabled": false
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}
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]
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'
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----
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</@tmpl.guide>
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