This section describes the steps you take to prepare the control workstations.
Read and become familiar with the following publications:
You must be familiar with HACMP terminology, including the following:
Planning for your High Availability Control Workstation is essential before proceeding with the installation steps. Be sure to read the "Planning for a high availability control workstation" chapter in RS/6000 SP: Planning, Volume 2, Control Workstation and Software Environment. |It describes control workstation network configuration requirements |which are necessary for HACWS to function correctly. It also describes |a sample network configuration which is referenced by the installation steps |later in this chapter.
If you have not done so already, install your SP system (single control workstation, frames, and nodes) as described in Chapter 2, Installing and configuring a new RS/6000 SP system). The SP system must be completely installed and operating correctly before beginning HACWS installation.
After you complete the rest of the instructions in this chapter, the original control workstation will become the primary control workstation, and the backup control workstation will be added to your system.
If you have not done so already, install base AIX on the backup control workstation. For more information, refer to the IBM AIX Installation Guide.
Create mksysb images of both the primary control workstation and the backup control workstation, and keep them on hand in case the HACWS installation fails. Restoring a mksysb image is the only way you can recover from a failed HACWS installation.
Also back up the /spdata file system if it is not located on the root volume group.
Perform all hardware setup. Refer to the RS/6000 SP: Planning, Volume 1, Hardware and Physical Environment for instructions. The use of a serial network with HACMP is strongly suggested. The serial connection can be either a SCSI-2 Differential bus using target mode SCSI, or a raw RS-232 serial line. Refer to the HACMP for AIX: Installation Guide for full details.
To set up the external disks, follow the instructions in the "Installing shared disk devices" chapter of the HACMP for AIX: Installation Guide or the "Planning shared disk devices" chapter of the HACMP for AIX: Enhanced Scalability Installation and Administration Guide.
Each SP frame in your SP system requires a serial port on the control workstation configured to accommodate the RS-232 line. SP-attached servers require two serial ports.
You already performed this step on the primary control workstation. You need to perform the same step on the backup control workstation. Each frame must be connected to the exact same tty port on both control workstations. If not cabled correctly, the hardware monitor will not bring all of the frames online.
Refer to Step 4: Configure RS-232 control lines for more instructions.
There is no hardware control or serial terminal cabling available from the backup control workstation to support SP-attached servers in an HACWS installation. This means that there is limited function from the backup control workstation when a failover occurs. Refer to the RS/6000 SP: Planning, Volume 2, Control Workstation and Software Environment for more details.
The authentication method on the backup control workstation must match the authentication method configured on the primary control workstation. On the primary control workstation, issue the lsauthent command to determine the authentication method setting. To change this setting, issue the chauthent command on the backup control workstation.
You must now install the PSSP file sets on the backup control workstation to match the PSSP software that is already installed on the primary control workstation. Refer to Task B. Install PSSP on the control workstation for descriptions of the PSSP file sets. You can perform file set installation from the command line by issuing the installp command or you can use SMIT by issuing the smit install_latest command. Refer to the IBM AIX Installation Guide for more details on how to use these commands.
Notes: