Configuring a Linux target environment

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Learn about the steps to configure, or delete a Linux® target environment.

To configure a Linux target environment, complete the following steps:

Click Target environments on the home page, or click the upper-right settings button to navigate to Target environments.
Click Add target environment.
Click the drop-down menu of Target environment type, and select Linux.
Enter a unique name that can be used to identify the Linux environment.
Select the emulator type to be ZD&T managed or Client managed. If you select ZD&T managed, ZD&T Enterprise Edition will automatically configure the advanced settings during the provisioning process. If you select Client managed, you must ensure that the following prerequisites were completed before you create a provisioning.
1. The ZD&T emulator is installed and configured to work with your license server.
2. All the required Linux operating system dependencies are installed. For more information, see Access to software repository to run YUM or apt-get commands.
3. The user that performs the action and runs the ZD&T emulator need to have the proper permissions and privileges. For more information, see Users and group settings.
4. The Linux networking is configured to properly route to the target emulated z/OS®. Linux port 2022 is required to route to port 22 on the internal IP address, which is the value set in the target environment settings. For more information, see Network configuration.
Enter the qualified hostname and Secure Socket Shell (SSH) port number of the Linux environment.
Add the Linux target environment in one of the following ways:
- Clear the Advanced settings option, and click Add a target environment to save the target environment to the Enterprise Edition repository.
- Enable the Advanced settings option. Then, complete the following optional steps:
  1. Modify the number of volumes that you want to extract and transfer simultaneously.
  2. Select if you have the root access to the Linux target environment. If you select No, you need to select the sudo option for the privilege management. Or, add the required privilege management command and validation command.
    For more information about configuring sudo access, see Sudo access configuration.
  3. Select if you want to install the required Linux packages during the provisioning.
    If you clear the option, refer to Access to software repository to run YUM or apt-get commands to check the package list, and make sure that the image you select installed all the required packages.
  4. Select if you want to configure the Linux user settings during the provisioning.
    If you clear the option, make sure that you manually configure the users and group settings before you provision instances from created images. For more information, see Users and group settings.
  5. Specify the emulated z/OS IP address.
  6. Select if you want to modify the Linux operating system routing rules to the emulated z/OS by changing the default TCP and UDP port forwarding and redirection rules.
    Note: To change the ports, follow these port routing rules:
    - For the ports that are forwarded from Linux to z/OS, enter a range of ports that are routed to the same ports to z/OS, and ensure that the first number must be smaller than the second number. For example, 23:2021. However, the ports 22, 9450, and 9451 cannot be included in the range because these ports are used. The port 22 is required for the TCP port rules of the redirected ports, 9450 is used by the license server, and 9451 is used by the UIM server.
    - For the ports that are redirected from Linux to z/OS, enter a port that is routed to a different port to z/OS. For example, 2022>22. Also, the rule 2022>22 is required for TCP port rules.
    If you clear the option, make sure that you manually configure the network before you provision instances from created images. For more information, see Network configuration.
  7. Click Add a target environment to save the target environment to the Enterprise Edition repository.