Red Hat GFS 5.2.1 -, Administrator'S Manual

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14 Chapter 3. Installing System Software
Note
One example of time synchronization software is the Network Time Protocol (NTP) software. You can
find more information about NTP at http://www.ntp.org.
3.1.3.
Stunnel
Utility
The
Stunnel
utility needs to be installed only on nodes that use the HP RILOE PCI card for I/O fenc-
ing. (For more information about fencing with the HP RILOE card, refer to HP RILOE Card on page
147.) Verify that the utility is installed on each of those nodes by looking for
/usr/sbin/stunnel
.
If you need the
Stunnel
utility, download it from the Stunnel website at http://www.stunnel.org.
3.2. Installation Tasks
To install system software, perform the following steps:
1. Install a Linux kernel.
Note
This step is required only if you are using Red Hat Enterprise Linux Version 3, Update 1 or earlier,
or if you are using Red Hat Linux Version 2.1.
2. Install the GFS RPM.
3. Load the GFS kernel modules.
3.2.1. Installing a Linux Kernel
Note
This step is required only if you are using Red Hat Enterprise Linux Version 3, Update 1 or earlier, or
if you are using Red Hat Linux Version 2.1.
Installing a Linux kernel consists of downloading and installing a binary kernel built with GFS patches
applied and, optionally, compiling third-party drivers not included with the kernel (for example, HBA
drivers) against that kernel. The GFS kernels have been built by applying GFS patches against vendor
kernels, fully enabling all GFS features.
To install a Linux kernel, follow these steps: