Viewing health check association status in Shield Advanced
You can see the status of the health check that's associated with a protection on the AWS WAF & Shield console Protected resources page and on the details page of each resource.
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Healthy – The health check is available and is reporting healthy.
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Unhealthy – The health check is available and is reporting unhealthy.
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Unavailable – The health check is not available for use by Shield Advanced.
To resolve an Unavailable health check
Create and use a new health check. Don't try to associate a health check again after it has had a status of unavailable in Shield Advanced.
For detailed guidance on following these steps, see the preceding topics.
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In Shield Advanced, disassociate the health check from the resource.
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In Route 53, create a new health check for the resource and note its ID. For information, see Creating and Updating Health Checks in the Amazon Route 53 Developer Guide.
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In Shield Advanced, associate the new health check with the resource.