I want to upload multiple certificates for different domains on an Elastic Load Balancer (ELB).

As of April 2018, Classic Load Balancer does not support adding multiple certificates. To overcome this limitation, use a Subject Alternative Name (SAN) certificate to validate multiple domains behind the load balancer, including wildcard domains with AWS Certificate Manager (ACM).

SSL/TLS certificates provisioned through ACM are free, easy to install, and support certificate renewals.

Note: ACM certificates can't be downloaded, and can only be used with AWS resources such as ELB (Classic and Application), Amazon CloudFront distributions, and Amazon API Gateway.  

Follow these steps to create a SAN certificate using ACM.

1.    Go to the AWS Certificate Manager console.

       If you've never created a certificate, choose Get started.

2.    Request an ACM public certificate. For instructions, see Request a Public Certificate.

3.    Open the AWS Certificate Manager console.

       When the status has changed to Issued, the certificate is ready for use on a load balancer.

4.    Attach the certificate to a Load Balancer. For detailed steps, see Replace the Default Certificate.

       For Select default certificate choose Choose an existing certificate from AWS Certificate Manager (ACM).  

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Published: 2018-05-17