Apache Karaf Container 4. Documentation. 4. Installation. Apache Karaf is a lightweight container, very easy to install and administrate, on both Unix and Windows platforms. Requirements. Hardware: 5. MB of free disk space for the Apache Karaf binary distribution.

Operating Systems: Windows: Windows 8, Windows 7, Windows 2. Windows Vista, Windows XP SP2, Windows 2. Unix: Red. Hat Enterprise Linux, Debian, Su. Grout Film Remover After Installation Of Avast.

SE/Open. Su. SE, Cent. OS, Fedora, Ubuntu, Mac. OS, AIX, HP- UX, Solaris, any Unix platform that supports Java. Environment: 4. 1. Using Apache Karaf binary distributions. Apache Karaf is available in two distributions, both as a tar.

The . To accomplish that, press Windows key and Break key together, switch to . Check the current value using.

If it’s not correct, fix it using: From a browser, navigate to http: //karaf. Download Apache Karaf binary distribution in the tar. Extract the files from the tar. KARAF. For example: gunzip apache- karaf- 4. Note. Remember the restrictions concerning illegal characters in Java paths, e.

Post- Installation steps. Thought it is not always required, it is strongly advised to set up the JAVA.

With this flexibility, Karaf is the perfect solution for microservices, systems integration, big data, and much more.

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By default KARAF. Building from Sources. If you intend to build Apache Karaf from the sources, the requirements are a bit different: Hardware: 5. MB of free disk space for the Apache Karaf source distributions or SVN checkout, the Maven build and the dependencies Maven downloads. Environment: Building on Windows platform. You can get the Apache Karaf sources from: git clone https: //git- wip- us. Use Apache Maven to build Apache Karaf: Note.

You can speed up the build by bypassing the unit tests: mvn clean install - Dskip. Tests. Now, you can find the built binary distribution in assemblies\apache- karaf\target\apache- karaf- 4.

Building on Unix platforms. You can get the Apache Karaf sources from: git clone https: //git- wip- us. Use Apache Maven to build Apache Karaf: Note. You can speed up the build by bypassing the unit tests: mvn clean install - Dskip. Tests. Now, you can find the built binary distribution in assemblies/apache- karaf/target/apache- karaf- 4. Directory structure.

The directory layout of a Karaf installation is as follows: /bin: control scripts to start, stop, login, . Start, stop, restart, connect. Start. Apache Karaf supports different start mode: the .

It’s the default start process. It starts Apache Karaf as a foreground process, and displays the shell console. On Unix: bin/karaf.

If debug mode is enabled, Karaf starts a JDWP socket on port 5. You can plug your IDE to define breakpoints, and run step by step. You can define these environment variables in bin/setenv Unix script (bin\setenv. Windows). For instance, to set the minimum and maximum memory size for the JVM, you can define the following values: On Unix: # Content of bin/setenv.

JAVA. It means that you can access to Karaf console remotely. To connect to the console, you can use the bin/client Unix script (bin\client.

Windows). On Unix: bin/client. Logging in as karaf.

You can use - -help to get details about the options: On Unix: bin/client - -help. Apache Karaf client.

You can use any SSH client to connect, like Open. SSH (ssh command) on Unix, or Putty on Windows. For instance, on Unix, you can do: ssh karaf@localhost - p 8.

Authenticated with partial success. Stop. When you start Apache Karaf in regular mode, the logout command or CTRL- D key binding logout from the console and shutdown Apache Karaf. When you start Apache Karaf in background mode (with the bin/start Unix script (bin\start. Windows)), you can use the bin/stop Unix script (bin\stop. Windows). More generally, you can use the shutdown command (on the Apache Karaf console) that work in any case. The shutdown command is very similar to the the shutdown Unix command. To shutdown Apache Karaf now, you can simple using shutdown: karaf@root()> shutdown - h.

Confirm: halt instance root (yes/no): The shutdown command asks for a confirmation. If you want to bypass the confirmation step, you can use the - f (- -force) option: karaf@root()> shutdown - f. You can also use directly halt which is an alias to shutdown - f - h. The shutdown command accepts a time argument.

With this argument, you can define when you want to shutdown the Apache Karaf container. The time argument can have different formats.

First, it can be an absolute time in the format hh: mm, in which hh is the hour (1 or 2 digits) and mm is the minute of the hour. Second, it can be in the format m (or +m), in which m is the number of minutes to wait.

The word now is an alias for 0. For instance, the following command will shutdown Apache Karaf at 1. Another example to shutdown Apache Karaf in 1.

Like for other commands, you can find details on the shutdown command man page: karaf@root()> shutdown - -help. Shutdown Karaf. The time argument can have different formats. First, it can be an abolute time in the format hh: mm, in which hh is the hour (1 or 2 digits) and mm is the minute of the hour (in two digits). Second, it can be in the format +m, in which m is the number of minutes to. The word now is an alias for +0.

Status. When you start Apache Karaf in background mode, you may want to check the current status. To do so, you can use the bin/status Unix script (bin\status.

Windows). Note. The status script returns 0 exit code if Apache Karaf is running, 1 exit code else. On Unix: bin/status.

Not Running .. On Windows: bin\status. Not Running .. bin\status. Running .. 4. 3. 4. Restart. The shutdown command accepts the - r (- -restart) option to restart Apache Karaf: karaf@root()> system: shutdown - r. Note. This command does not start a new JVM. It simply restarts the OSGi framework.

System. MBean. Apache Karaf provides the JMX System. MBean dedicated to control of the container itself. The System. MBean object name is org. The System. MBean provides different attributes and operations, especially operations to halt or reboot the container: reboot() reboots Apache Karaf now (without cleaning the cache)reboot(time) reboots Apache Karaf at a given time (without cleaning the cache). The time format is the same as the time argument of the shutdown command.

Clean. Cache(time) reboots Apache Karaf at a given time, including the cleanup of the cache. Clean. All(time) reboots Apache Karaf at a given time, including the cleanup of the whole data folder. Apache Karaf now. Apache Karaf at a given time. The time format is the same as the time argument of the shutdown command. Integration in the operating system: the Service Wrapper. In the previous chapter, we saw the different scripts and commands to start, stop, restart Apache Karaf.

Instead of using these commands and scripts, you can integrate Apache Karaf directly in your operating system service control. Apache Karaf provides the . The service wrapper allows you to directly integrate Apache Karaf: like a native Windows Servicelike a Unix daemon process. The . Supported platforms. Windows 8, 7, 2. 00.

R2, 2. 00. 3, Vista (3. Linux Red. Hat Enterprise Linux, Debian, Cent. OS, Fedora, Ubuntu (3.

Free. BSD 9. x, 8. AIX 5. x, 6. x, 7. Power architecture)Solaris 8, 9, 1. Sparc, 3. 2 and 6.

HP- UX 1. 0. x, 1. SGI Irix. Mac. OS X4. Installation. Apache Karaf Service Wrapper is an optional feature. You have to install the . Installation. Karaf Wrapper is an optional feature.

To install it, simply type: karaf@root> feature: install wrapper. Once installed, wrapper feature will provide wrapper: install new command in the Karaf shell: karaf@root> wrapper: install - -help. Install the container as a system service in the OS. Uninstall. The wrapper: install provides the system commands to perform to uninstall the service/daemon). For instance, on Ubuntu/Debian, to uninstall the Apache Karaf service, you have to remove the karaf- service script from the runlevel scripts: rm /etc/init. If you preferred the systemd service instead of system.

V: You can remove the . Note for Mac. OS users.

On Mac. OS you can install the service for an user or for the system. If you want to add bin/org.