目前公司有2个域名，其中这次涉及到3个子域名需要更改为HTTPS传输，分别为:
passport.abc.com
www.test.com
admin.test.com
那么就涉及到购买ssl证书的问题，由于价格问题使用3个不同的证书(每个域名一个)。
由于实验环境，我们就手动生成3个ssl证书
建立目录，及进入目录
[root@gz122haproxy95 ～]# mkdir ~/keys
[root@gz122haproxy95 keys]# cd ~/keys[root@gz122haproxy95 keys]# openssl genrsa -out passport.abc.com.key 2048[root@gz122haproxy95 keys]# openssl req -new -key passport.abc.com.key -out passport.abc.com.csr You are about to be asked to enter information that will be incorporatedinto your certificate request.What you are about to enter is what is called a Distinguished Name or a DN.There are quite a few fields but you can leave some blankFor some fields there will be a default value,If you enter '.', the field will be left blank.-----Country Name (2 letter code) [GB]:CN #国家State or Province Name (full name) [Berkshire]:GuangDong #省份Locality Name (eg, city) [Newbury]:ShenZhen #城市Organization Name (eg, company) [My Company Ltd]:Test.Inc #公司名称Organizational Unit Name (eg, section) []:passport.abc.com #组织名称Common Name (eg, your name or your server's hostname) []:passport.abc.com #域名Email Address []:passport@abc.comPlease enter the following 'extra' attributesto be sent with your certificate requestA challenge password []:An optional company name []: [root@gz122haproxy95 keys]# openssl x509 -req -days 3650 -in passport.abc.com.csr -signkey passport.abc.com.key -out passport.abc.com.crt按照以上方法，把名称替换掉再制作2份,最后的结果就是
[root@gz122haproxy95 keys]# ls -l
total 36-rw-r--r-- 1 root root 1354 Dec 4 16:54 admin.test.com.crt-rw-r--r-- 1 root root 1050 Dec 4 16:54 admin.test.com.csr-rw-r--r-- 1 root root 1675 Dec 4 16:52 admin.test.com.key-rw-r--r-- 1 root root 1354 Dec 4 16:48 passport.abc.com.crt-rw-r--r-- 1 root root 1078 Dec 4 16:44 passport.abc.com.csr-rw-r--r-- 1 root root 1675 Dec 4 16:41 passport.abc.com.key-rw-r--r-- 1 root root 1354 Dec 4 16:52 www.test.com.crt-rw-r--r-- 1 root root 1062 Dec 4 16:52 www.test.com.csr-rw-r--r-- 1 root root 1679 Dec 4 16:51 www.test.com.key现在就是Nginx和OpenSSL的安装与配置(这里注意，一般情况下一个IP只支持一个SSL证书，那么我们现在要在一个IP上实现多个SSL证书，就必须让Nginx支持TLS SNI，由于默认的OpenSSL是没有打开TLS SNI的)
[root@gz122haproxy95 ~]# wget
[root@gz122haproxy95 ~]# tar zxf openssl-0.9.8zh.tar.gz [root@gz122haproxy95 ~]# wget http://nginx.org/download/nginx-1.8.0.tar.gz[root@gz122haproxy95 ~]# tar zxf nginx-1.8.0.tar.gz [root@gz122haproxy95 ~]# cd nginx-1.8.0[root@gz122haproxy95 nginx-1.8.0]# ./configure --prefix=/usr/local/nginx1.8.0 --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-openssl=../openssl-0.9.8zh [root@gz122haproxy95 nginx-1.8.0]# make && make install#上面只需要解压openssl即可，然后在nginx的配置参数中添加--with-openssl=DIR指定路径即可,另外由于openssl需要编译，所以时间会较长。在编译安装nginx的时候可能会出现pcre库没找到或zlib没找到，在下可以使用
yum -y install pcre-devel zlib-devel
在安装编译好Nginx后，执行
[root@gz122haproxy95 nginx-1.8.0]# /usr/local/nginx1.8.0/sbin/nginx -V
nginx version: nginx/1.8.0built by gcc 4.1.2 20080704 ( 4.1.2-55)built with OpenSSL 0.9.8zh 3 Dec 2015TLS SNI support enabled #可以看到TLS SNI support打开了configure arguments: --prefix=/usr/local/nginx1.8.0 --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-openssl=../openssl-0.9.8zh然后配置nginx
upstream passport.abc.com {
server 192.168.20.87:80; server 192.168.20.88:80; } # HTTPS server # server { listen 443 ssl; server_name passport.abc.com; ssl_certificate /root/keys/passport.abc.com.crt; ssl_certificate_key /root/keys/passport.abc.com.key; ssl_session_cache shared:SSL:1m; ssl_session_timeout 5m; ssl_ciphers HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; location / { proxy_pass http://passport.abc.com; } } upstream www.test.com { server 192.168.20.98:80; server 192.168.20.99:80; } # HTTPS server # server { listen 443 ssl; server_name www.test.com; ssl_certificate /root/keys/www.test.com.crt; ssl_certificate_key /root/keys/www.test.com.key; ssl_session_cache shared:SSL:1m; ssl_session_timeout 5m; ssl_ciphers HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; location / { proxy_pass http://www.test.com; } }通过以上即可实现nginx的HTTPS的多域名反向代理