ssl_multicert.config(5) on Linux
The text eec55404fbad, as Debian 10 (Buster) shipped it.
Traffic Server SSL certificate configuration file The ssl_multicert.config file lets you configure Traffic Server to use multiple SSL server certificates to terminate the SSL sessions. If you have a Traffic Server system with more than one IP address assigned to it, then you can assign a different SSL certificate to be served when a client requests a particular IP address or host name. At configuration time, certificates are parsed to extract the certificate subject and all the DNS subject alternative names. A certificate will be presented for connections requesting any of the hostnames found in the certificate. Wildcard names are supported, but only of the form *.domain.com, ie. where * is the leftmost domain component. Changes to ssl_multicert.config can be applied to a running Traffic Server using traffic_ctl config reload.