Add and remove Liberty features

Overview

Liberty features are the units of functionality by which we control the pieces of the runtime environment loaded into a particular server. To add or remove a Liberty feature, we add or remove an XML snippet in the <feature> subelement of the server.xml configuration file. When we add or remove Liberty features, the changes are applied dynamically. For a list of the main Liberty features see Liberty features.

Add or remove Liberty features

1. Edit the following file with developer tools or with a text editor:
   /path/to/liberty/wlp/usr/servers/server_name/server.xml

   Optional: We can change the path.

2. Add or remove features in the configuration file.

   The set of features is enclosed within the <featureManager> element, and each feature within the <feature> subelement. For example:

   <server>
     <featureManager>
       <feature>servlet-3.0</feature>
       <feature>localConnector-1.0</feature>
     </featureManager>
   </server>

   The matching of feature names is not case-sensitive; the following example is also a valid server configuration:

   <featureManager>
           <feature>Servlet-3.0</feature>
           <feature>localConnector-1.0</feature>
   </featureManager>
   

3. Save the changes to the configuration file.

Changes are applied. If the server is running, the changes are applied dynamically.

Parent topic: Administer Liberty manually

Related information

• Server configuration