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These elements are used by Catalina to direct requests to the correct processing apparatus. AJP Connectors can also be used to expose Apache's SSL processing functionality to Tomcat.
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This technique is intended to free up more power for dynamic page generation and load balancing, so if fast performance is a concern for your application, this is something to consider. The most common reason why you would want this functionality is if you plan to use Apache to serve static content in front of Tomcat. The main role of this element is to help Tomcat integrate with an installation of Apache. This element represents a connector that is able to communicate with the AJP protocol. Comprehensive testing will help you avoid this problem.
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Setting this value too low will cause requests to stack inside the server socket, which will begin refusing connections once it is full. This attribute controls the maximum number of threads that can be created to handle requests exceeding the number of available threads. The "maxThreads" attribute is of particular importance. When configuring your HTTP connectors, pay close attention to the "minSpareThreads", "maxThreads", and "acceptCount" attributes. Each Connector you define represents a single TCP port Catalina should listen to for HTTP requests. This means that in addition to executing servlets and JSP pages, Catalina is able to listen to specific TCP ports for requests. This element represents an HTTP/1.1 Connector, and provides Catalina with stand-alone web server functionality. Tomcat allows you to define both HTTP and AJP connectors. Connectorsīy nesting one Connector (or multiple Connectors) within a Service tag, you allow Catalina to forward requests from these ports to a single Engine component for processing. The name of the service that will appear in logs is specified using the Service element's "name" attribute. The main function of this component is to define these components as a single service. This element, which can be nested inside a Server element, is used to contain one or multiple Connector components that share the same Engine component. The className attribute specifies which Java class implementation should be used. The shutdown attribute defines the command string to be listened for on the specified port to trigger a shutdown. The port attribute is used to specify which port Tomcat should listen to for shutdown commands. Additionally, the Server element supports the "port", "shutdown", and "className" attributes. This element defines a single Tomcat server, and contains the Logger and ContextManager configuration elements. You can find comprehensive documentation for these options on Apache's Tomcat Documentation pages, but here's some information on some of the most important elements to get you started with your configuration! Top Level Elements Server
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Most often, if you need to make any major changes to your Tomcat installation, such as specifying application port numbers, server.xml is the file to edit. All of the elements within these categories have many attributes that can be used to fine-tune their functionality. The elements of the server.xml file belong to five basic categories - Top Level Elements, Connectors, Containers, Nested Components, and Global Settings. The server.xml file is Tomcat's main configuration file, and is responsible for specifying Tomcat's initial configuration on startup as well as defining the way and order in which Tomcat boots and builds. Try Tcat - server profiles let you save common configurations and apply them to multiple Tomcat instances with a single click. By default, these files are located at TOMCAT-HOME/conf/server.xml and TOMCAT-HOME/conf/web.xml, respectively.ĭon't do the same configuration work twice. The two most important configuration files to get Tomcat up and running are called server.xml and web.xml. The first is editing Tomcat's XML configuration files, and the second is defining appropriate environment variables. Your initial configuration process will consist of two tasks, which are explained in detail in this article. Once you get Tomcat up and running on your server, the next step is configuring its basic settings. Tomcat Configuration - A Step By Step Guide