The Operating Environment Install Image Resource area allows you to specify the name of the resource that contains the operating environment installation files that are needed to deploy the selected operating environment installation step. You either can select the resource name from a list of existing installation resources defined for the HMC, or you can add a new installation resource and provide the needed installation files, if necessary, for the new resource that you define.
Resource name
Select the name of an existing installation resource that contains the required operating environment installation files for the selected installation step. If the resource that you need is not available in the list, click New Install Resource to open the Manage Installation Resources window to define a new resource and provide the needed installation files, if necessary, for the new resource that you define.
New Install Resource
Click this option to display the Manage Installation Resources window, which allows you to define a new installation resource for the selected installation step. After you define the new resource, it becomes available for selection from the Resource name list. You either can create a local installation resource or you can define a remote installation resource. If you create a local installation resource, you must provide the appropriate operating environment installation files to copy to the HMC for use with the new resource.
If you define a remote installation resource, you must have the appropriate operating environment installation files available on a Network Installation Manager (NIM) server. You must specify the name of the NIM server and the name of the NIM resource group that contains the files as part of defining the new resource.
Additionally, you must set up the HMC to be able to access the NIM server and use the operating environment installation files during system plan deployment. The HMC must be able to run secure shell commands by means of an ssh connection to access the NIM server successfully. Consequently, you must ensure that the HMC can provide an appropriate cryptographic key to the NIM server by completing the following steps:
- Open an HMC command prompt and run the following command to generate the RSA keys that the HMC needs for ssh connections and to place the keys in an accessible file in the HMC HOME directory: ssh-keygen -t rsa -f /home/hscroot/ssh_keys. This command creates two files: one called ssh_keys and one called ssh_keys.pub that contain the needed RSA keys. The ssh_keys file contains the private key that the HMC needs for establishing an ssh connection and this file needs to remain in the /home/hscroot subdir; the ssh_keys.pub file contains the public key that the NIM server must have to complete the ssh connection with the HMC.
- On the remote NIM server, append or copy the content of the /home/hscroot/ssh_keys.pub file into the /.ssh/authorized_keys file on the NIM server.
Note: Remote clients defined on the NIM server remain in place after installation of the operating environment on a partition for post installation management. The short hostname of the system will identify this remote client.