Nginx installs the echo module and nginxecho module.

Nginx installs the echo module and nginxecho module.

1. download the required echo Module
Https://github.com/openresty/echo-nginx-module/tags
# Wget https://github.com/openresty/echo-nginx-module/archive/v0.60.tar.gz
# Tar zxvf v0.60.tar.gz
# Mv echo-nginx-module-0.60 tools/

2. Install nginx
# Wget http://nginx.org/download/nginx-1.10.1.tar.gz
# Tar-zxvf nginx-1.10.1.tar.gz
#/Application/nginx/sbin/nginx-V # view installed modules

3. Install the echo-nginx Module
#./Configure -- add-module =/root/tools/echo-nginx-module-0.60 # Install echo module (Folder name echo-nginx-module-0.60)
# Make # Start compilation, but do not install it (make install will directly overwrite the installation)
Note: Back up the old one and install it manually.
# Mv/application/nginx/sbin/nginx. old
# Make upgrade # smooth upgrade
# Make install # New Installation
# Make clean # (clear operation, which can be ignored)

4. Use of the ngix_echo Module
Location/echo {
Default_type text/html;
Set $ foo 'Hello world'; # custom Variables
Echo "$ request_uri"; # display nginx global variable content
Echo </br> $ foo; # display custom variable content
}

5. nginx global variables
$ Args: # This variable is equal to the parameter in the request line, which is the same as $ query_string
$ Content_length: # Content-length Field in the request header.
$ Content_type: # Content-Type field in the request header.
$ Document_root: # the value specified by the current request in the root command.
$ Host: # Request host header field. Otherwise, it is the server name.
$ Http_user_agent: # Client agent Information
$ Http_cookie: # client cookie Information
$ Limit_rate: # This variable can limit the connection rate.
$ Request_method: # client request action, usually GET or POST.
$ Remote_addr: # IP address of the client.
$ Remote_port: # The client port.
$ Remote_user: # username verified by Auth Basic Module.
$ Request_filename: # file path of the current request, which is generated by the root or alias command and URI request.
$ Scheme: # HTTP methods (such as http and https ).
$ Server_protocol: # The protocol used by the request, usually HTTP/1.0 or HTTP/1.1.
$ Server_addr: # server address, which can be determined after a system call.
$ Server_name: # server name.
$ Server_port: # the port number of the request to reach the server.
$ Request_uri: # The original URI containing the request parameters, excluding the host name, for example, "/foo/bar. php? Arg = baz ".
$ Uri: # The current URI without request parameters. $ uri does not contain the host name, for example, "/foo/bar.html ".
$ Document_uri: # Same as $ uri