Linux host administration reference

The host manages the other Netezza components and provides support as an administration monitor, which you can use to manage Netezza functions. The host also converts queries into optimized execution plans, specifically by using the strengths of the Netezza architecture.

Most Netezza models are high availability (HA) systems and have two hosts; one host serves as the active host and one as the standby host, which takes over when the active host encounters problems or is manually shutdown. Any changes that you make to the Linux configuration of one host, such as adding Linux users or groups, managing crontab schedules, or changing NTP settings, you must also make to the second host to ensure that the hosts have identical configurations. It is important to make these changes correctly on both hosts to ensure that the environments are the same.

This section describes some of the common Linux procedures. For more information, see the Red Hat documentation.