Spring Boot and Nginx integration

Question

In my project, web app is developed using Spring boot with default tomcat server. I am using NGINX as load-balancer and have configured my spring-boot-web-app in NGINX configuration as follows:

location /spring-boot-web-app {
     proxy_pass http://spring-boot-web-app/
}

http {
    upstream /spring-boot-web-app {
        server <IP_of_spring_boot_app>:<Port_of_spring_boot_app>
    }
}

Now lets say NGINX IP and port as nginx_ip and nginx_port respectively. Also working URL for my web app as: http://web_app_ip:web_app_port/rest/echo/hi

The above URL works fine. But when i try to hit same URI via NGINX it throws 404. URL used via NGINX as: http://nginx_ip:nginx_port/spring-boot-web-app/rest/echo/hi

Is there something i am missing?

Somehow i feel its more of CORS related problem. Do i need to set any header value? — Sam
– Sam, Commented May 5, 2016 at 18:51
You may need to setup proxy_pass_reverse nginx.com/resources/wiki/start/topics/examples/likeapache, stackoverflow.com/questions/12847771/… — Gangaraju
– Gangaraju, Commented May 5, 2016 at 18:52

Gangaraju · Accepted Answer · 2016-05-05 20:11:38Z

12

This works for me. Can you try this?

Running tomcat

docker run -d -p 8080:8080 --name=tomcat tomcat:8

Running nginx

docker run -d -p 80:80 --link tomcat:tomcat --name=nginx nginx

Go inside nginx container and update the conf

docker exec -it nginx bash

/etc/nginx/nginx.conf:

server {
   listen 80 default_server;
  server_name subdomain.domain.com;
  location / {
      proxy_pass http://tomcat:8080;
      proxy_set_header Host      $host;
      proxy_set_header X-Real-IP $remote_addr;
  }
}

Restart nginx service
```
nginx -s reload
```
Access the tomcat through nginx from host browser. You may need to add entry to /etc/hosts
```
http://subdomain.domain.com
```

Complete nginx conf: nginx.conf

edited May 5, 2016 at 20:11

answered May 5, 2016 at 19:31

Gangaraju

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4 Comments

Sam Over a year ago

Really appreciate your help "Gangaraju". But the docker command you proposed i cant use. Because i am using consul to do it and define dependency.

Gangaraju Over a year ago

It may not fit into your environment. But try to debug your issue, by comparing with these steps and check what you are missing. I would suggest you to run these containers in other environment to cross verify the nginx configuration/ for better understanding

Sam Over a year ago

Thank you very much Gangaraju for your prompt help..Really appreciate!1

Sam Over a year ago

Accepted the answer as it gave some route to debug. Will post the solution once i get it.

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