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Server Load Balancer:CLB additional domain names

Last Updated:Jan 31, 2024

This topic describes how to configure a listener to distribute HTTPS requests that are destined for different domain names to different backend server groups. To address this requirement, you can add additional domain names to your Classic Load Balancer (CLB) instance and add multiple SSL certificates to the HTTPS listener.

Terms

Server Name Indication (SNI) is an extension to SSL and TLS and allows a server to install multiple SSL certificates on the same IP address. When a client accesses CLB, the certificate configured for the requested domain name is used by default. If the request does not match the certificate configured for the domain name, the certificate configured for the HTTPS listener is used.

Limits

  • SNI is supported only by high-performance CLB instances.

  • CLB supports the following algorithms for public keys:

    • RSA 1024

    • RSA 2048

    • RSA 4096

    • ECDSA P-256

    • ECDSA P-384

    • ECDSA P-521

References