lighttpd 1.4.x
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104 lines
2.9 KiB
104 lines
2.9 KiB
=================== |
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the Proxy Interface |
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=================== |
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----------------- |
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Module: mod_proxy |
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----------------- |
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:Author: Jan Kneschke |
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:Date: $Date: 2004/08/01 07:01:29 $ |
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:Revision: $Revision: 1.1 $ |
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:abstract: |
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The proxy module a simplest way to connect lighttpd to |
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java servers which have a HTTP-interface. |
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.. meta:: |
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:keywords: lighttpd, Proxy |
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.. contents:: Table of Contents |
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Description |
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=========== |
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... |
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Options |
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======= |
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lighttpd provides the Proxy support via the proxy-module |
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(mod_proxy) which provides 2 options in the config-file: |
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:proxy.debug: |
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a value between 0 and 65535 to set the debug-level in the |
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Proxy module. Currently only 0 and 1 are used. Use 1 to |
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enable some debug output, 0 to disable it. |
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:proxy.balance: |
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might be one of 'hash', 'round-robin' or 'fair' (default). |
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'round-robin' choses another host for each request, 'hash' |
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is generating a hash over the request-uri and makes sure |
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that the same request URI is sent to always the same host. |
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That can increase the performance of the backend servers |
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a lot due to higher cache-locality. 'fair' is the normal |
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load-based, passive balancing. |
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:proxy.server: |
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tell the module where to send Proxy requests to. Every |
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file-extension can have its own handler. Load-Balancing is |
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done by specifying multiple handles for the same extension. |
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structure of proxy.server section: :: |
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( <extension> => |
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( |
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( "host" => <string> , |
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"port" => <integer> ), |
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( "host" => <string> , |
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"port" => <integer> ) |
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), |
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<extension> => ... |
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) |
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:<extension>: is the file-extension or prefix (if started with "/") |
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might empty to match all requests |
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:"host": is ip of the proxy server |
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:"port": is tcp-port on the "host" used by the proxy |
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server (default: 80) |
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e.g.: :: |
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proxy.server = ( ".jsp" => |
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( ( |
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"host" => "10.0.0.242", |
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"port" => 81 |
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) ) |
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) |
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Example: |
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======== |
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Using lighttpd + mod_proxy in front of 8 Squids which handle the |
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caching of dynamic content for you. All requests for the host |
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www.example.org should be forwarded to the proxy. All proxies |
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listen on port 80 for requests. :: |
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$HTTP["host"] == "www.example.org" { |
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proxy.balance = "hash" |
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proxy.balance = ( "" => ( ( "host" => "10.0.0.10" ), |
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( "host" => "10.0.0.11" ), |
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( "host" => "10.0.0.12" ), |
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( "host" => "10.0.0.13" ), |
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( "host" => "10.0.0.14" ), |
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( "host" => "10.0.0.15" ), |
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( "host" => "10.0.0.16" ), |
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( "host" => "10.0.0.17" ) ) ) |
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} |
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If one of the hosts goes down the all requests for this one server are |
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moved equally to the other servers. If you want to know more about |
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the algorithm used here google for 'Microsoft CARP'. |
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