Chapter 5. Offline Mode
Abstract
You can run the JBoss Fuse container in offline mode (that is, without an Internet connection). But if you are planning to deploy custom applications to the container, it might be necessary to download additional dependencies (to a local Maven repository) before you can run the container in offline mode with these applications.
If you want to run the JBoss Fuse container in offline mode, it is necessary to distinguish between the following kinds of dependency:
- Runtime dependencies—the dependencies required to run the JBoss Fuse container, in its default configuration.
- Build-time dependencies—the dependencies required to build a custom application (which might include third-party libraries).
Here is a summary of what can be done in offline mode and what needs to be done in online mode (with an Internet connection):
- Running the JBoss Fuse container in its default configuration—is supported in offline mode. The default configuration of the JBoss Fuse container is specified by the
featuresBootproperty in theetc/org.apache.karaf.features.cfgfile. The requisite dependencies are all provided in thesystem/sub-directory of the installation. - Installing additional features—is supported in offline mode, but only for the Full Install distribution. That is, you can use the
features:installcommand to install any of the features from the standard feature repositories (as specified by thefeaturesRepositoriesproperty in theetc/org.apache.karaf.features.cfgfile) and in the Full Install, all of these features are provided in thesystem/sub-directory of the installation. - Deploying custom applications—is, in general, not supported in offline mode. There may be some cases where an application with a minimal set of build-time dependencies is deployable offline, but in general, custom applications would have third-party dependencies that require an Internet connection (so that JAR files can be downloaded by Apache Maven).
If you do need to deploy an application with dependencies that are not available offline, you can use the Maven dependency plug-in to download the application's dependencies into a Maven offline repository. This customized Maven offline repository can then be distributed internally to any machines that do not have an Internet connection. For more details of this approach, see section "Offline Repository for a Maven Project" in "Fabric Guide".
