location /ios/ { #这种情况，这里一定要匹配的是/ios/，不能是/ios
proxy_pass http://192.168.1.102:8090; #一定要保证192.168.1.102机器8090端口站点目录下有ios目录！否则访问会报错404！ proxy_redirect off ; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr;1）
配置proxy_pass时，当在后面的url加上了/，相当于是绝对根路径，则nginx不会把location中匹配的路径部分代理走;
如果没有/，则会把匹配的路径部分也给代理走.
2) nginx配置
[root@localhost ~]# cd /etc/nginx/conf.d/
[root@localhost conf.d]# cat test.confserver {listen 80;server_name localhost;location / {root /var/www/html;index index.html;}}[root@localhost conf.d]# cat /var/www/html/index.htmlthis is page of test!!!!3）启动Nginx
[root@localhost ~]# service nginx start //或者使用 systemctl start nginx.service 4）测试访问（103.110.186.23是192.168.1.23机器的外网ip）[root@localhost conf.d]# curl http://192.168.1.23this is page of test!!!!
[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.htmlthis is 192.168.1.5[root@bastion-IDC ~]# /usr/local/nginx/sbin/nginx -s reload测试访问（103.110.186.5是192.168.1.5的外网ip）：[root@bastion-IDC ~]# curl http://192.168.1.5:8090this is 192.168.1.5
[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]# curl http://192.168.1.23/proxy/
this is 192.168.1.5[root@localhost conf.d]# curl http://192.168.1.23/proxy<html><head><title>301 Moved Permanently</title></head><body bgcolor="white"><center><h1>301 Moved Permanently</h1></center><hr><center>nginx/1.10.3</center></body></html>
7）第二种情况，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 restartRedirecting to /bin/systemctl restart nginx.service那么访问http://192.168.1.23/proxy或http://192.168.1.23/proxy/，都会失败！这样配置后，访问http://192.168.1.23/proxy/就会被反向代理到http://192.168.1.5:8090/proxy/
[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 restartRedirecting to /bin/systemctl restart nginx.service[root@localhost conf.d]# curl http://192.168.1.23/proxy/192.168.1.5 haha-index.html
9)第四种情况：相对于第三种配置的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 restartRedirecting to /bin/systemctl restart nginx.service[root@localhost conf.d]# curl http://192.168.1.23/proxy/index.html192.168.1.5 hahaindex.html上面配置后，访问http://192.168.1.23/proxy/index.html就会被代理到http://192.168.1.5:8090/hahaindex.html
同理，访问http://192.168.1.23/proxy/test.html就会被代理到http://192.168.1.5:8090/hahatest.html[root@localhost conf.d]# curl http://192.168.1.23/proxy/index.html192.168.1.5 hahaindex.html//192.168.1.23/proxy/，后面就算是默认的index.html文件也要跟上，否则访问失败！
上面四种方式都是匹配的path路径后面加"/"，下面说下path路径后面不带"/"的情况：
1）第一种情况，proxy_pass后面url带"/"：
[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 restartRedirecting to /bin/systemctl restart nginx.service
2）第二种情况，proxy_pass后面url不带"/"
[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 restartRedirecting to /bin/systemctl restart nginx.service[root@localhost conf.d]#
3）第三种情况
[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 restartRedirecting to /bin/systemctl restart nginx.service
[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 restartRedirecting to /bin/systemctl restart nginx.service
原文：https://www.cnblogs.com/k8s-pod/p/13912072.html