Config nginx as reverse proxy server

trinhhieu668

Nginx is open source web server is very popular. It is very fast and support many function as load balance, visual server bla bla … you can get more information about it at main page https://nginx.org/en/

Today, I focus

  • How to add new domain to nginx.
  • How to setup nginx as reverse proxy to forward request to internal service.

Suppose you have some resources

  • Cloud server with static IP 67.205.175.55 and default domain is test.azstack.com.
  • You have new domain test-api.azstack.com want to add point to  67.205.175.55.
  • Service API written by nodejs and listening on port 9002.

How to do it ?

Suppose nginx is installed on linux system, the steps to perform the configuration are as follows :

Step 1 : Check file config of nginx

find / -name "nginx.conf"

Step 2 : Edit and add content to nginx.conf

vi /etc/nginx/nginx.conf

Add the below content

server {
listen 80;
server_name test-api.azstack.com;
root /usr/share/nginx/html;

location / {
proxy_pass http://127.0.0.1:9002;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection ‘upgrade’;
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}

error_page 404 /404.html;
location = /40x.html {
}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}

Step 3 : Try to run service and grant permission

-You can check nginx log

tailf /var/log/nginx/error.log

If you have error permission denied,  you continue check SELinux to view detail log

cat /var/log/audit/audit.log | grep nginx | grep denied

The problem is resolved by enable httpd_can_network_connect

setsebool -P httpd_can_network_connect 1

Step 4 : Restart nginx and recheck to make sure nginx work is ok.

Thank you !

 

 

 

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