[root@VM_58_118_centos dbback]# a2enmod ssl

[root@VM_58_118_centos dbback]# service apache2 restart

[root@VM_58_118_centos dbback]# /etc/apache2/sites-enabled

[root@VM_58_118_centos dbback]# ll /etc/ssl/certs

total

drwxr-xr-x  root root  Nov  : ./

drwxr-xr-x  root root  Nov  : ../

-rw-r--r--  root root  Nov  : 3162396_api.zhinengyingjian.work_chain.crt

-rw-r--r--  root root  Nov  : 3162396_api.zhinengyingjian.work.key

-rw-r--r--  root root  Nov  : 3162396_api.zhinengyingjian.work_public.crt

[root@VM_58_118_centos dbback]# vim /etc/apache2/sites-enabled/default-ssl.conf