Nginx实现多域名证书HTTPS

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 incorporated
into 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 blank
For 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.com
Please enter the following 'extra' attributes
to be sent with your certificate request
A 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CentOS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/1.8.0
built by gcc 4.1.2 20080704 (Red Hat 4.1.2-55)
built with OpenSSL 0.9.8zh 3 Dec 2015
TLS 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

本文出自 “枫林晚” 博客，请务必保留此出处http://fengwan.blog.51cto.com/508652/1719708