Auxiliary database installation workflow

Description

CAUTION Deployment Requirement

An auxiliary database requires one or more dedicated stations.

You cannot install the auxiliary database software on a station if another NSP system component is installed on the station.

CAUTION Service Disruption

If a firewall is in place, you must ensure that the firewall allows the required traffic to pass between the auxiliary database and other components in the deployment before you attempt to install the auxiliary database.

See the NSP Planning Guide for port assignment and firewall configuration information.

CAUTION Performance Degradation Risk

If the internal communication among the stations in an auxiliary database cluster is not confined to an isolated private network, management network congestion may result.

The internal communication among the stations in an auxiliary database cluster requires a dedicated private network. Each station IP address used for internal communication must be associated with an interface connected to the private network, and must be the only IP address of the interface.

This section describes how to:

• Install and enable an auxiliary database in a new or existing NSP deployment; see Workflow for auxiliary database installation.

• Add a new station to an existing auxiliary database; see To add a station to an auxiliary database.

Note: You must set CPU frequency scaling to “performance” in the BIOS of each auxiliary database station, or the auxiliary database installation fails. See the RHEL power management documentation for information about enabling the “performance” CPU frequency scaling governor on a station.

Setting CPU frequency scaling to “performance” effectively disables the function, so may result in greater energy consumption by a station.

Workflow for auxiliary database installation

The following is the sequence of high-level actions required to install and enable an auxiliary database. You can use the workflow and associated procedures to deploy a standalone auxiliary database cluster in one data center, or geo-redundant auxiliary database clusters in separate data centers.

Stages
1	Perform the following sequence of procedures in the standalone or primary data center. Perform procedure To prepare a station for auxiliary database installation on each auxiliary database station. Perform procedure To install the auxiliary database software. Perform procedure To add an auxiliary database to a deployment.
2	If you are deploying a geo-redundant auxiliary database, perform the following sequence of actions in the standby data center. Stop the standby auxiliary database cluster. Perform procedure To prepare a station for auxiliary database installation on each auxiliary database station. Perform procedure To install the auxiliary database software. Perform procedure To add an auxiliary database to a deployment.