Apache. Два SSL сайта на одном сервере.
/etc/apache2/sites-enabled/default-ssl.conf
<IfModule mod_ssl.c>
<VirtualHost *:443>
ServerAdmin webmaster@localhost
ServerName site01.domain.com
DocumentRoot /var/www/site01
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
SSLEngine on
SSLCertificateFile /etc/letsencrypt/live/site01.domain.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/site01.domain.com/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/site01.domain.com/chain.pem
<FilesMatch "\.(cgi|shtml|phtml|php)$">
SSLOptions +StdEnvVars
</FilesMatch>
<Directory /usr/lib/cgi-bin>
SSLOptions +StdEnvVars
</Directory>
</VirtualHost>
<VirtualHost *:443>
ServerAdmin webmaster@localhost
ServerName site02.domain.com
DocumentRoot /var/www/site02
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
SSLEngine on
SSLCertificateFile /etc/letsencrypt/live/site02.domain.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/site02.domain.com/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/site02.domain.com/chain.pem
<FilesMatch "\.(cgi|shtml|phtml|php)$">
SSLOptions +StdEnvVars
</FilesMatch>
<Directory /usr/lib/cgi-bin>
SSLOptions +StdEnvVars
</Directory>
</VirtualHost>
</IfModule>