G.3.1 Software Installation

After installing the software related to PRIMECLUSTER, you need to take it into operation and make various settings for the OS and the hardware.

Perform the following steps as necessary

Installation of VMware vSphere
Take the following steps to set system disks and related devices, shared disks and related devices, and the virtual network.
- Setting up system disks and related devices
  - When you create a new virtual machine using the wizard executed from vSphere Client version 5, proceed to "Create Disk" and select [Eager Zeroed].
  - When you create a new virtual machine using the wizard executed from vSphere Client version 4, proceed to "Create Disk." Select "Support clustering features such as Fault Tolerance" and create disks in eagerzeroedthick format.
  - For types of SCSI controllers, set to "LSI Logic Parallel" for the RHEL5 environment, and set to "LSI Logic Parallel" or "VMware Paravirtual" for the RHL6 environment.
  - Set to "None" for sharing of the SCSI bus.
- Setting up shared disks
  - When creating the first virtual machine, create shared disks taken over in the cluster system with Raw DeviceMapping (RDM). For the second virtual machine, select "Use an existing virtual disk" and specify the first RDM disk you created.
  - Set the compatibility mode if shared disk to "Virtual."
  - For virtual device nodes, use a new SCSI controller which is different from the system disk.
    (Example: X indicates the controller number and Y indicates the disk number for the SCSI disk [SCSI(X:Y)]. When the virtual device node of the system disk is [SCSI(0:0)], do not use the virtual device node [SCSI(0:Y)] whose controller number is 0. Set the different number such as [SCSI(1:0)].)
  - For virtual device nodes, set the controller number and the disk number to be consistent on all the nodes of the cluster system.
  - For types of SCSI controllers, set the same type as the system disk on a guest OS.
  - For sharing SCSI buses, set to "Virtual."
- Setting up the virtual network
  - When creating the virtual machine, create at least two network systems for the cluster interconnect.
NTP settings (Guest OS)
These settings serve to synchronize the time of each node in the cluster system configuration. Be sure to make these settings when you configure the cluster.
Make these settings on the guest OS before you install PRIMECLUSTER.
Guest OS settings (Guest OS)
Take the following steps to set the guest OS.
- File system settings for system volume
  In the default setting of the ext3 or ext4 file system, even if an I/O device where the system volume is allocated fails, a cluster failover does not occur and the system operation may continue based on the data stored on the memory.
  If you want PRIMECLUSTER to trigger a cluster failover immediately when an I/O device where the system volume is allocated fails, perform the following setting.
  Setting
  Specify "errors=panic" to the mount option of each partition (the ext3 or the ext4 file system) included in the system volume.
  Example: To set it in /etc/fstab (when /, /var, and /home exist in one system volume)
```
LABEL=/ / ext3 errors=panic 1 1
LABEL=/boot /boot ext3 errors=panic 1 2
LABEL=/var /var ext3 errors=panic 1 3
LABEL=/home /home ext3 errors=panic 1 4
```
  However, a cluster failover may not operate immediately because it takes time before the file system receives the I/O error. The detection frequency of I/O error can be raised if the writing operation to the system volume is regularly done.
Installation of PRIMECLUSTER (Guest OS)
For installing PRIMECLUSTER, an installation script (CLI Installer) is available.
This script method installs PRIMECLUSTER node by node on systems that already have Linux(R) and related software installed. It is also utilized for installation on cluster management servers.
See
For details on the installation procedure, see the Installation Guide for PRIMECLUSTER.
Checking and setting the kernel parameters
Depending on the environment, the kernel parameters must be modified.
Applicable nodes:
All nodes on which PRIMECLUSTER is to be installed
Depending on the utilized products and components, different kernel parameters are required.
Check the Kernel Parameter Worksheet and modify the settings as necessary.
See
For details on the kernel parameters, see "A.6 Kernel Parameter Worksheet."

Note

To activate the modified kernel parameters, restart the guest OS after installation and settings for related software are complete.

G.3.1 Software Installation

G.3.1.1 Installation and Configuration of Related Software

G.3.1.2 Installation and Environment Configuration of Applications