To prepare your environment for the installation
of the DB2® pureScale® Feature
in the supported Linux environments,
you must perform several tasks to be able to complete the installation
process successfully.
Installation prerequisites for the DB2 pureScale environment in a virtual machine (Linux)
Before you install the IBM DB2 pureScale environment,
you must ensure that your system meets the following network, hardware,
firmware, storage, and software requirements. You can use the db2prereqcheck command
to check the software and firmware prerequisites of a specific DB2 version.
Modifying kernel parameters (Linux)
For root installations, the database manager uses a formula
to automatically adjust kernel parameter settings and eliminate the
need for manual updates to these settings.
Configuring communication adapter ports and switches (Linux)
The topics in this section detail how to configure communication
adapter ports and switches on supported Linux operating
systems. The configuration process is dependent on your network.
Setting up db2locssh
You can configure db2locssh so that you can install the DB2 pureScale feature without enabling remote
root login and passwordless SSH.
Shared storage support for DB2 pureScale environments
Shared
storage devices supported by IBM DB2 pureScale Feature are
divided into three categories. These categories group storage devices
and multipath I/O driver pairs based on two storage features.
Creating required users for a DB2 pureScale Feature installation
A DB2 pureScale environment
requires a user ID for the instance owner,
a non-root user ID to use a secure shell (SSH) network protocol between
hosts, and another to run fenced user-defined functions or procedures.