Nginx actual operation reverse agent

Bobo roast duck 2020-11-13 05:00:10
nginx actual operation reverse agent


In this article, let's introduce Nginx The implementation of reverse proxy .

Reverse proxy

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The core of reverse proxy is that we don't want to expose our internal services directly to clients .
Nginx It can be used as our reverse proxy server , How do you do that ?
Actually nginx Reverse proxy instructions do not need to add additional modules , Default by oneself proxy_pass Instructions , The reverse proxy can be implemented only by modifying the configuration file .

Nginx Reverse agent practice

1. Create a web service

You can start one directly Tomcat service , Easy to place jsp file , You can also start a service through a development tool , We use... For the convenience of operating code IDE Create a simple web Services to handle requests
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Start service access :
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Our service is OK Of

2. To configure Nginx Reverse proxy

We can add a separate configuration file for the reverse proxy , And then we were in nginx.conf Pass through include To introduce it
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And then we were in nginx.conf Created under the same level directory of extra Folder and create proxy_demo.conf, The contents are as follows

server{

listen 80;
server_name localhost;
location / {

proxy_pass http://192.168.12.1:8081;
}
}

3. Test access

Detect and reload the configuration file .
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visit http://192.168.12.120/user/query
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This is a simple reverse configuration of the proxy ,

Proxy modification request method

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The client has GET Send a request to NGINX in ,NGINX Forwarding requests will also use GET How to forward , In fact, the proxy server can modify the request mode , The implementation is also very simple , We just need to be in the configuration file add to proxy_method POST that will do

server{

listen 80;
server_name localhost;
location / {

proxy_pass http://192.168.12.1:8081;
proxy_method POST;
}
}

Look at the effect

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Effect of implementation

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Get real IP Address

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The node forwarding through the reverse proxy cannot obtain the reality of the client IP, How to solve it , modify nginx Agent configuration file for

server{

listen 80;
server_name localhost;
location / {

proxy_pass http://192.168.12.1:8081;
proxy_method POST;
proxy_set_header Host $host;
# Get client's ip Set the address to header in 
proxy_set_header X-Real-IP $remote_addr;
# Get all forwarding requests ip Information list 
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}

Test it

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Okay ~ So much for reverse proxy , If you have any questions, please leave a message

版权声明
本文为[Bobo roast duck]所创,转载请带上原文链接,感谢

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