THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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2. Quick start
If you are in a hurry to have Apache Karaf up and running right away, this section will provide you with some basic steps for downloading, building (when needed) and running the server in no time. This is clearly not a complete guide so you may want to check other sections of this guide for further information.
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Apache Karaf started life as the Apache ServiceMix kernel and then moved as a Apache Felix subproject.
Don't be surprised by any transitional references which remain.
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With Karaf already installed, open a command line console and change directory to <KARAF_HOME>. To start the server, run the following command in Windows:
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respectively on Unix:
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You should see the following informations on the command line console:
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You can now run your first command. Simply type the <tab> key in the console.
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You can then grab more specific help for a given command using the --help option for this command:
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Note that the console supports tab completion, so you just need to enter ad <tab> cr <tab> instead of admin:create.
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In the console, run the following commands:
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This commands will download, install and start the specified jars.
The example installed is using Camel to start a timer every 2 seconds and output a message on the console.
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The previous commands download the Camel features descriptor and install the example feature.
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Stopping and uninstalling the sample application
To stop this demo, run the following command:
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Common Problems
- Launching Karaf can result in a deadlock in Felix during module dependency resolution. This is often a result of sending a SIGINT (control-C) to the process when it will not cleanly exit. This can corrupt the caches and cause startup problems in the very next launch. It is fixed by emptying the component cache:
Code Block rm -rf data/cache/*
Stopping Karaf
To stop Karaf from the console, enter ^D in the console:
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Alternatively, you can also run the following command:
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Summary
This document showed you how simple it is to have Apache Karaf up and running. The overall time for getting the server running should be less than five minutes if you have the prerequisite (Java 1.5) already installed. Additionally, this article also showed you how to deploy and test a simple Apache Camel application in less than five minutes.
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