![]() When a request matches a location with a proxy_pass directive inside, the request is forwarded to the URL given by the directive. The proxy_pass directive is mainly found in location contexts, and it sets the protocol and address of a proxied server. This type of proxy is known as a generic "proxy pass" and is handled by proxy_pass directive. The most straight-forward type of proxy involves handing off a request to servers that can communicate using http. Nginx can proxy requests to servers that communicate using the http(s), FastCGI, SCGI, and uwsgi, or memcached protocols through separate sets of directives for each type of proxy ( Module ngx_http_upstream_module).Īfter defining the upstream servers, we need to tell NGINX how to listen and how to react to requests. So, the upstream directive is used to define a pool of servers. The upstream directive in ngx_http_upstream_module defines a group of servers that can listen on different ports. However, we use NGINX as a reverse proxy to serve pages from an application server, we can deactivate it. The sendfile is usually essential to speed up any web server via passing the pointers (without copying the whole object) straight to the socket descriptor. The worker_connections sets the maximum number of simultaneous connections that can be opened by a worker process (default=1024). For more about it, check Thread Pools in NGINX Boost Performance 9x!. It is common practice to run 1 worker process per core. We set worker_processes explicitly to 1 which is the default value. Proxy_set_header X-Forwarded-Host $server_name Proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for Note that we copied the following nf to our reverse proxy container: Reverseproxy latest 788046b5f293 3 minutes ago 25.1MB Sending build context to Docker daemon 64.51kB Once it's done, we may want to remove the line we've just added since it will increase the size of the image. $ docker run -t -i nginx-alpine /bin/bash To check the version, we can add the following to the Dockerfile because the alpine docker image doesn't have bash installed by default: It will use the nf after copying it to the proxy container: Here is the Dockerfile which will be used to create the reverse proxy image. Dockerfile - building a reverse proxy image
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