下面舉個小實例說明下：
centos7系統庫中默認是沒有nginx的rpm包的，所以我們自己需要先更新下rpm依賴庫
1）使用yum安裝nginx需要包括nginx的庫，安裝nginx的庫
[root@localhost?~]#?rpm?-uvh?http://nginx.org/packages/centos/7/noarch/rpms/nginx-release-centos-7-0.el7.ngx.noarch.rpm
2）使用下面命令安裝nginx
[root@localhost?~]#?yum?install?nginx
3）nginx配置
[root@localhost?~]#?cd?/etc/nginx/conf.d/ [root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } } ? [root@localhost?conf.d]#?cat?/var/www/html/index.html this?is?page?of?test!!!!
4）啟動nginx
[root@localhost?~]#?service?nginx?start?//或者使用?systemctl?start?nginx.service
5）測試訪問（103.110.186.23是192.168.1.23機器的外網ip）
[root@localhost?conf.d]#?curl?http://192.168.1.23 this?is?page?of?test!!!!
看看下面幾種情況：分別用http://192.168.1.23/proxy/index.html進行訪問測試
為了方便測試，先在另一臺機器192.168.1.5上部署一個8090端口的nginx，配置如下：
[root@bastion-idc?~]#?cat?/usr/local/nginx/conf/vhosts/haha.conf server?{ listen?8090; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } } [root@bastion-idc?~]#?cat?/var/www/html/index.html this?is?192.168.1.5 [root@bastion-idc?~]#?/usr/local/nginx/sbin/nginx?-s?reload
測試訪問（103.110.186.5是192.168.1.5的外網ip）：
[root@bastion-idc?~]#?curl?http://192.168.1.5:8090 this?is?192.168.1.5
192.168.1.23作為nginx反向代理機器，nginx配置如下：
1）第一種情況：
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy/?{ ?proxy_pass?http://192.168.1.5:8090/; } }
這樣，訪問http://192.168.1.23/proxy/就會被代理到http://192.168.1.5:8090/。p匹配的proxy目錄不需要存在根目錄/var/www/html里面
注意，終端里如果訪問http://192.168.1.23/proxy（即后面不帶”/”），則會訪問失敗！因為proxy_pass配置的url后面加了”/”
[root@localhost?conf.d]#?curl?http://192.168.1.23/proxy/ this?is?192.168.1.5 [root@localhost?conf.d]#?curl?http://192.168.1.23/proxy <title>301?moved?permanently</title><center><h1>301?moved?permanently</h1></center> <hr><center>nginx/1.10.3</center>
頁面訪問http://103.110.186.23/proxy的時候，會自動加上”/”（同理是由于proxy_pass配置的url后面加了”/”），并反代到http://103.110.186.5:8090的結果
2）第二種情況，proxy_pass配置的url后面不加”/”
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy/?{ ?proxy_pass?http://192.168.1.5:8090; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service
那么訪問http://192.168.1.23/proxy或http://192.168.1.23/proxy/，都會失敗！
這樣配置后，訪問http://192.168.1.23/proxy/就會被反向代理到http://192.168.1.5:8090/proxy/
3）第三種情況
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy/?{ ?proxy_pass?http://192.168.1.5:8090/haha/; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service [root@localhost?conf.d]#?curl?http://192.168.1.23/proxy/ 192.168.1.5?haha-index.html
這樣配置的話，訪問http://103.110.186.23/proxy代理到http://192.168.1.5:8090/haha/
4）第四種情況：相對于第三種配置的url不加”/”
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy/?{ ?proxy_pass?http://192.168.1.5:8090/haha; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service [root@localhost?conf.d]#?curl?http://192.168.1.23/proxy/index.html 192.168.1.5?hahaindex.html
上面配置后，訪問http://192.168.1.23/proxy/index.html就會被代理到http://192.168.1.5:8090/hahaindex.html
同理，訪問http://192.168.1.23/proxy/test.html就會被代理到http://192.168.1.5:8090/hahatest.html
[root@localhost?conf.d]#?curl?http://192.168.1.23/proxy/index.html 192.168.1.5?hahaindex.html
注意，這種情況下，不能直接訪問http://192.168.1.23/proxy/，后面就算是默認的index.html文件也要跟上，否則訪問失敗！
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上面四種方式都是匹配的path路徑后面加”/”，下面說下path路徑后面不帶”/”的情況：
1）第一種情況，proxy_pass后面url帶”/”：
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy?{ ?proxy_pass?http://192.168.1.5:8090/; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service
2）第二種情況，proxy_pass后面url不帶”/”
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy?{ ?proxy_pass?http://192.168.1.5:8090; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service [root@localhost?conf.d]#
這樣配置的話，訪問http://103.110.186.23/proxy會自動加上”/”（即變成http://103.110.186.23/proxy/），代理到192.168.1.5:8090/proxy/
3）第三種情況
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy?{ ?proxy_pass?http://192.168.1.5:8090/haha/; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service
這樣配置的話，訪問http://103.110.186.23/proxy會自動加上”/”（即變成http://103.110.186.23/proxy/），代理到http://192.168.1.5:8090/haha/
4）第四種情況：相對于第三種配置的url不加”/”
[root@localhost?conf.d]#?cat?test.conf server?{ listen?80; server_name?localhost; location?/?{ root?/var/www/html; index?index.html; } ? location?/proxy?{ ?proxy_pass?http://192.168.1.5:8090/haha; } } [root@localhost?conf.d]#?service?nginx?restart redirecting?to?/bin/systemctl?restart?nginx.service
這樣配置的話，訪問http://103.110.186.23/proxy，和第三種結果一樣，同樣被代理到http://192.168.1.5:8090/haha/
