I have one server Server-1 where my app server is running.
In Server-2 I want to set up my Nginx to act as a reverse proxy for my app server.
how do I set up Nginx(in Server-2) which forwards traffic to Server-1
how do I check that everything is working fine, Nginx(Server-2) is acting as a reverse proxy for my app server(Server-1)
Traffic--->Server-2(with Nginx reverse proxy)--->Server-1(with server)
1) You should add location that will be redirecting all traffic from Server-2 to Server-1, e.g.:
server {
listen 80;
server_name Server-2.com;
location / {
proxy_pass http://Server-1.com/;
}
}
2) Try load http://Server-2.com page and if everything fine, you will get response from your app on Server-1.com
Related
I am a new user of nginx and I am following a video guide from Linode on youtube (How to Set Up an NGINX Reverse Proxy).
I have a working nginx and apache server both on port 80. I know that because when I type the ip address of both in firefox, it directs me to nginx/apache welcome page.
The youtube video configuration template is as follow (where the server_name is the linode ip) :
server {
listen 80;
listen [..]:80;
server_name 172.105.104.226;
location / {
proxy_pass http://localhost:3000/;
}
On my Proxmox machine, the nginx server is on a VM at 192.168.1.241 and the apache server on another VM at 192.168.1.243.
Looking at nginx documentation we find that this :
location /some/path/ {
proxy_pass http://www.example.com/link/;
}
should proxy all the traffic received on the nginx listening port and redirect it to the address specified by proxy pass.
With all these information, my configuration file is like this :
server {
listen 80;
listen [::]:80;
server_name 192.168.1.241;
location / {
proxy_pass http://192.168.1.243;
}
}
My understanding is that this configuration file should listen at the address 192.168.1.241 on port 80 (nginx server) and redirect it to the specified address 192.168.1.243 (apache server)/
If i understand correctly, Location / should take the request as is received on the nginx server and redirect it to the apache server.
However, when I enter 192.168.1.241 in my browser, it doesn't show the apache welcome message but shows the nginx welcome message. That means that the proxy isn't working.
My nginx understanding is extremely limited as I am just starting to learn, but to me it seems like this should work but doesn't.
Thank you for your help
It turns out that the configuration is correct.
The problem was that the webpage was cached. By forcing a full refresh, 192.168.1.241 redirected to 192.168.1.243 successfully.
I'm having trouble figuring out load balancing on Nginx. I'm using:
- Ubuntu 16.04 and
- Nginx 1.10.0.
In short, when I pass my ip address directly into "proxy_pass", the proxy works:
server {
location / {
proxy_pass http://01.02.03.04;
}
}
When I visit my proxy computer, I can see the content from the proxy ip...
but when I use an upstream directive, it doesn't:
upstream backend {
server 01.02.03.04;
}
server {
location / {
proxy_pass http://backend;
}
}
When I visit my proxy computer, I am greeted with the default Nginx server page and not the content from the upstream ip address.
Any further assistance would be appreciated. I've done a ton of research but can't figure out why "upstream" is not working. I don't get any errors. It just doesn't proxy.
Okay, looks like I found the answer...
two things about the backend servers, at least for the above scenario when using IP addressses:
a port must be specified
the port cannot be :80 (according to #karliwsn the port can be 80 it's just that the upstream servers cannot listen to the same port as the reverse proxy. I haven't tested it yet but it's good to note).
backend server block(s) should be configured as following:
server {
# for your reverse_proxy, *do not* listen to port 80
listen 8080;
listen [::]:8080;
server_name 01.02.03.04;
# your other statements below
...
}
and your reverse proxy server block should be configured like below:
upstream backend {
server 01.02.03.04:8080;
}
server {
location / {
proxy_pass http://backend;
}
}
It looks as if a backend server is listening to :80, the reverse proxy server doesn't render it's content. I guess that makes sense, since the server is in fact using default port 80 for the general public.
Thanks #karliwson for nudging me to reconsider the port.
The following example works:
Only thing to mention is that, if the server IP is used as the "server_name", then the IP should be used to access the site, means in the browser you need to type the URL as http://yyy.yyy.yyy.yyy or (http://yyy.yyy.yyy.yyy:80), if you use the domain name as the "server_name", then access the proxy server using the domain name (e.g. http://www.yourdomain.com)
upstream backend {
server xxx.xxx.xxx.xxx:8080;
}
server {
listen 80;
server_name yyy.yyy.yyy.yyy;
location / {
proxy_pass http://backend;
}
}
I want to use nginx as reverse proxy and load balancer, but i don't want Apache as server. It's possible to have two or more nginx as the same time? One as proxy and other serving content?
upstream backend_hosts {
server nginx1;
server nginx2;
}
server {
listen 80;
server_name example.com;
location /proxy-me {
proxy_pass http://backend_hosts;
}
}
Nginx is very capable of hosting a site with one server/location block and being a reverse proxy in another server/location block.
I have met an annoying issue for Nginx Load Balancer, please see following configuration:
http {
server {
listen 3333;
server_name localhost;
location / {
proxy_pass http://node;
proxy_redirect off;
}
}
server {
listen 7777;
server_name localhost;
location / {
proxy_pass http://auth;
proxy_redirect off;
}
}
upstream node {
server localhost:3000;
server localhost:3001;
}
upstream auth {
server localhost:8079;
server localhost:8080;
}
}
So what I want is to provide two load balancers, one is to send port 3333 to internal port 3000,3001, and second one is to send request to 7777 to internal 8079 and 8000.
when I test this setting, I noticed all the request to http://localhost:3333 is working great, and URL in the address bar is always this one, but when I visit http://localhsot:7777, I noticed all the requests are redirected to internal urls, http://localhost:8080 or http://localhost:8079.
I don't know why there are two different effects for load balancing, I just want to have all the visitors to see only http://localhost:3333 or http://localhost:7777, they should never see internal port 8080 or 8079.
But why node server for port 3000 and 3001 are working fine, while java server for port 8080 and 8079 is not doing url rewrite, but only doing redirect?
If you see the configuration, they are exactly the same.
Thanks.
I have my staging config setup like so:
server {
listen 80;
server_name staging.domain.com;
root /var/www/staging/public;
and my production config setup like this:
server {
listen 80;
server_name www.domain.com;
root /var/www/production/public;
With no other redirects or anything.
The issue is that even if I disable the production config I can still access the staging server at www.domain.com.
Why is it not being restricted to its configured subdomain?
I've answered a similar question like this before
Let me start with a small explanation on how nginx matches the hosts, quoting from how nginx processes a request
In this configuration nginx tests only the request’s header field
“Host” to determine which server the request should be routed to. If
its value does not match any server name, or the request does not
contain this header field at all, then nginx will route the request to
the default server for this port.
When you disable the main server you only have 1 left, so nginx passes the request to it, if you want to avoid that you need to add a main server to block all unconfigured domains
server {
listen 80 default_server;
return 403;
}
Then run
sudo service nginx reload
Then you're set