6 discovery, Recommended discovery tasks, Discovery – HP Systems Insight Manager User Manual

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6 Discovery

Discovery is the process of finding systems in the

so that they can be managed from

the CMS by Systems Insight Manager;. Systems Insight Manager can automatically discover and identify
systems attached to the network using information from management protocols such as SNMP, WMI, WBEM,
SSH, and SSL. Create discovery tasks to limit discovery to specific network segments or IP address ranges,
or to control the frequency that each task runs. Use discovery filters to prevent discovery of unwanted system
types.

When you access the Discovery page, a table displays a list of all available discovery tasks. You can
configure multiple instances of discovery with each instance having its own schedule and set of inclusion
ranges. When a discovery task is executed, the Last Run column is updated to display its progress, including
the percentage of completion.

Automatic discovery

and completion percentages are calculated by weighting two factors: the ping sweep

(performed on each host) is 10% of the process; the system identification is 90% of the process. If no host
is found on an IP address, the system identification is considered complete. For example, you have 100
hosts in your discovery range. If 50 hosts have been pinged, but only 10 identified, you have: 50/100 *
.10 = 0.05 (ping sweep) 10/100 * .90 = 0.09 (identification) 0.05 + 0.09 = 0.14 * 100 = 14% (total
completed percentage).

NOTE:

You can run only one discovery task at a time. If you select to run more than one discovery task,

the percentage in the Last Run column remains at 0% until the currently running task is complete.

Recommended discovery tasks

For best results, HP recommends creating the following discovery tasks, and running them sequentially in
the suggested order. You might want to create multiple tasks for certain types, such as servers, grouping
them so that systems with the same credentials are in the same discovery tasks, with up to three sets of
credentials supplied in each discovery task. This reduces the chance of account lockout when an invalid
credential is tried too many times.

Central Management Server (CMS)

This discovery task is for discovery of the Systems Insight Manager

CMS and its management processor, if it has one.

Onboard Administrator

This discovery task is for discovery of the Onboard Administrators for every

enclosure to be managed. When specifying credentials for this task, include the iLO credentials for
every blade in the enclosures associated with the Onboard Administrators.

Management Processors

This discovery task is for discovery of all management processors not

discovered in the previous tasks. This includes iLOs and management processors for all non-blade
systems.

Physical Servers

This discovery task is for discovery of physical servers (blade servers and standalone

servers). The management processors for these servers must be discovered prior to this discovery task
being run.

Virtual Machines

This discovery task is for discovery of virtual machines associated with servers

discovered in the previous category.

NOTE:

If discovery tasks are run out of order, errors are likely. Typical errors due to running discovery

tasks in an improper order include:

•

Association errors

For example, a server not associated with a management processor or virtual

machine not associated with a virtual machine host.

•

Credentials errors

Because discovery of systems can trigger additional discovery of associated systems

or management processors, if the correct credentials are not supplied for the associated systems, their
discoveries are likely to show errors. If you discover these associated systems with a subsequent discovery
task containing the proper credentials, they should then complete successfully.

Recommended discovery tasks