4.4 Post-installation steps
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## 4.4 Post-installation steps

### Set environment variable variables

#### JAVA_HOME

Virgo Server for Apache Tomcat uses the `JAVA_HOME` environment variable to locate the `java` executable. Configure this environment variable to point to the home directory of the Java 6 installation on your computer.

#### SERVER_HOME

As a convenience it is recommended that you create an environment variable that points to the Virgo Server for Apache Tomcat installation directory. Note that the Virgo Server for Apache Tomcat does not require that such an environment variable has been set. This variable may have any name of your choosing. The Virgo Server for Apache Tomcat’s documentation assumes that the variable is named `SERVER_HOME`.

#### Linux

Edit the `.profile` file in your home directory to add the `SERVER_HOME` and `JAVA_HOME` environment variables. For example, if you installed into `/opt`:

    export SERVER_HOME=/opt/virgo-web-server-3.6.0.RELEASE/
    export JAVA_HOME=/user/java/jdk1.6.0_17
    export PATH=$JAVA_HOME/bin:$PATH

To verify the setting of `JAVA_HOME`, issue the command `$JAVA_HOME/bin/java -version` from a new terminal window and ensure that the command completes successfully and reports a Java version `1.6.`x (denoting Java 6) or greater.

#### Microsoft Windows

This section shows how to add `SERVER_HOME` as a system variable on Windows. Follow the same procedure to add or update the `JAVA_HOME` environment variable.

From the Start menu, open the Control Panel and double-click on ‘System’.

Click the ‘Advanced’ tab and select ‘Environment Variables’. Next, click the ‘New’ button in the ‘System Variables’ section.

This will display the ‘New System Variable’ window. Enter `SERVER_HOME` as the ‘Variable name’ and the installation directory as the ‘Variable value’. Click OK.

To verify the setting of `JAVA_HOME`, issue the command `"%JAVA_HOME%"\bin\java -version` from a new command prompt and ensure that the command completes successfully and reports a Java version `1.6.`x (denoting Java 6) or greater.

### Microsoft Windows - Troubleshooting Security Permissions

When starting Virgo Server for Apache Tomcat on some variants of Windows you might encounter a problem with file permissions. The error looks like this.

    WARNING: jmxPermissions.vbs did not update the permissions of C:\virgo\configuration\org.eclipse.virgo.kernel.jmxremote.access.properties. Check the file has the correct permissions.

If VTS starts correctly (see Starting and Stopping Virgo Server for Apache Tomcat) you can skip this section and carry on. However to secure your installation you have to set correct permissions. To do so, go to the ‘configuration’ directory of the installation in Windows Explorer.

Right click on the ‘org.eclipse.virgo.kernel.jmxremote.access.properties’ file and view its properties, then select the ‘Security’ tab. Remove all groups and users from the list and select ‘Apply’.

Within the security page select the ‘Advanced’ options. On the ‘Owner’ tab, choose the owner that you are trying to run the VTS as and select ‘Apply’.

Once this is done select ‘OK’ to return to the ‘Security’ tab and now add the owner to the list of groups and users that have permission to access the file.

Once all these steps are complete you can proceed to start the VTS.

    C:\dev\virgo-web-server-3.6.0.RELEASE>bin\startup.bat
    [2009-12-08 13:09:09.545] startup-tracker              <KE0001I> Kernel starting.

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