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4.2. Remote Console
The remote console feature allows to connect to a running ServiceMix Karaf instance from a remote computer and perform all the operations that are usually accessible from the local console.
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The remote console is currently enabled by default, but there is no real security mechanism in place. The username and password that are prompted are by default not validated, so any combination will work. In production environment, we recommend disabling the server (by using the client mode) or deploying a JAAS realm to perform some real authentication. See the security documentation.
Launch options
The ServiceMix Kernel Karaf shell scripts supports a number of options to control the remote console:
console
: launch ServiceMix Kernel Karaf in the default mode (both local and remote console activated). This is the default modeserver
: launch ServiceMix Kernel Karaf in with a remote console but no local consoleclient
: launch ServiceMix Kernel Karaf in with a local console only
These options affect two system properties that can be set if you don't use the standard shell scripts:
servicemixkaraf.startLocalConsole
servicemixkaraf.startRemoteShell
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Using the client jar
It is also possible to use a more lightweight way to connect to a Karaf instance using the following command line:
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There are a few parameters that can be set on the command line to change the URL used to connect to Karaf, the user or the password.
All these parameters are detailed in the help screen:
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For example, to shut down Karaf from the command line, you can run the following command:
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The client jar also supports passing command line arguments to the remote Karaf.
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Using an SSH client
You can use any standard SSH client to connect to a Karaf instance. The default port is 8101.
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Using another Karaf instance
First, open a terminal and launch a Kernel Karaf in server mode (you could use a Kernel Karaf instance in console mode too):
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On another terminal, start a Kernel another Karaf instance in client mode:
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At this point in time, you can not use the same Karaf installation to start both the server and the client, so you need to create a new instance using the 'admin create xxx' command and use that one to start the client. If you are on a different host or already use another copy of Karaf, this requirement does not hold.
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Once the console appears, you can run the remote rsh
command to connect to the other Kernel:
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remote rsh tcp://localhost:8101/ -u smx -p smx
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You can also do that in a single command line from the prompt by appending the previous ServiceMix command to the shell command:
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To verify that your are connected to the remote Kernelinstance, run the following command:
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and check the system informations.
Configuration
The TCP port is configured at the following location:
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The defaut configuration is as below:
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The port used can easily be changed by changing the default port 8101
in the sshPort
property.
The security realm used by the console when authenticating remote users is named karaf
, so you can override this realm as explained in the security section.
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