Nginx setup for local webapp and websocket - linux

Question

following is my nginx configuration,
server { //PART-1
listen 80;
server_name _;
location / {
proxy_pass http://127.0.0.1:8090;
proxy_redirect off;
proxy_pass_request_headers on;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection Upgrade;
}
}
server { //PART-2
listen 80;
server_name service;
root /usr/local/tomcat7/webapps/service-snapshot;
location / {
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://127.0.0.1:8080/ServiceUI/;
}
}
first part of config works fine for websockets, which I am already using.
Second part of config is for webapp running on Apache tomcat 7.0.56, which is not working.
Is there something wrong with config? assuming server_name in both parts might be causing issue!
Any suggestions!

Answer 1

While having multiple services on one IP and port is working perfectly fine, the server_name directive is using the HOST header submitted by the client/browser. In this case, you're not supplying the header but instead asking for a specific location on the same server (you're not asking for http://_ or http://service but for http://yourserver/services from what I see in the comments).
To make it work, you have to specify the different services via locations like this:
server {
listen 80;
server_name THIS_IS_WHERE_YOUR_DOMAIN_OR_MAYBE_LOCALHOST_GOES;
location / {
proxy_pass http://127.0.0.1:8090;
proxy_redirect off;
proxy_pass_request_headers on;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection Upgrade;
}
location /Service {
root /usr/local/tomcat7/webapps/service-snapshot;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://127.0.0.1:8080/ServiceUI/;
}
}