Configuring external nodes
Nodes for external events are used in HPOM to handle the
following types of messages:
- Messages from systems without the need to configure each system
in HPOM as a separate managed node. This is useful for managers in
an environment that get messages forwarded from lower level
managers, from another network, or from system management products
such as HP Network Node Manager.
- Messages from systems without an installed agent (SNMP devices,
for example).
- Messages from new systems in a certain IP subnet (created from
SNMP traps), making it possible to get messages immediately without
the need to set them up.
Each
external node must be uniquely identified by specifying
properties for that node. Use the following property sheets in the
External Node Properties dialog box to specify the unique
details that identify each external node. Required information is
specified.
Configure external nodes using the wizard
To quickly configure a new external node, use the
External Node
Configuration wizard. This will provide the minimum amount of
information you need to bring the external node under management.
NOTE:
At any time you can exit the wizard by clicking
Expert Mode.
This returns you to the
External Node Configuration editor,
where you can more completely specify the characteristics of this
node. You cannot return to the wizard from the
External Node
Configuration editor. When you add another external node, the
wizard opens again.
To open the wizard
- Open the Node Configuration editor if it is not already
open.
- Select
the Nodes folder in the console tree.
- Click
on the
Configuration toolbar to open the Node Configuration
editor.
- From within the Configure Managed Nodes dialog box,
select the Nodes folder in the managed nodes list.
- Right-click to open the shortcut menu.
- Select New External Node to open the wizard.
- In the General page, type the Display name in the
box provided. You must supply this information to proceed. The
caption appears in the External Nodes list. Enter any
comments or additional information in the Description box.
This information is optional.
- Click Next to continue to specify the settings you want
for this node.
- In the Pattern page, type the pattern that you want the
external node to match. The pattern you create here will be checked
against the option you specify in Check pattern against.
The pattern acts as a filter that defines the external node. For
example, if the pattern is ROS*
then all messages with
node IDs that match this pattern will be associated with the
external node and will only appear in the browser for that node.
The first match found determines to which node the message belongs.
When an incoming message matches a node pattern, the evaluation
stops and the message appears in the browser for that node.
Examples:
- To match fully-qualified domain names
To include all IP names in the domain, "deu.hp.com", use the
following example: <*>.deu.hp.com
- To match an IP address range
For example, to set up an IP address range to match all
addresses between 15.136.123.5 (including) and 15.136.123.72
(excluding), use the following example: 15.136.123.<5 -le
[<#>] -lt 72>
- To match a specific string
To match a specific string, remember to enclose the string with
the (^) and ($) characters in the following manner:
^STRING$
. This pattern matches only
STRING
and excludes similar strings such as
STRING1
or FIRSTSTRING
.
NOTE:
Click the button to the right of the Pattern box to help you
enter variables and operators for numeric comparison. Click Test
Pattern... to open the Test Pattern dialog box where you
can create a pattern and enter strings to immediately compare your
pattern.
- Specify what the pattern should match in the Check pattern
against group box. Choose from Fully Qualified Domain
Name, IP Address, or Node Name. This selection
clarifies any possible ambiguity in the pattern. For example, a
pattern like
*15*
could refer to an IP address like
15.1.2.2
, or to a node name like
ROS15test
. By selecting IP Address or Node
Name, you avoid any confusion about the meaning of the pattern.
- Fully Qualified Domain Name
If Fully Qualified Domain Name is the pattern choice, the
filter will ignore the IP address for this pattern.
- IP Address
If IP Address is the pattern choice, only valid IP
strings are evaluated.
- Node Name
If Node Name is selected, the filter matches the node
name.
- Click Next to proceed to the wizard's Order
page.
- Select Check Before Managed Nodes to have external nodes
evaluated before managed nodes. This can be faster, because it
avoids some of the checking that occurs with configured node names.
When this box is checked, messages with node IDs that match the
pattern you specified in the previous page are associated with the
external node. If this box is not checked, the managed node takes
precedence.
- The two lists display all external nodes that have been
created. The list order shows the order of evaluation set for
incoming messages. The node being edited can be moved from one list
to the other by using the Check Before Managed Nodes check
box. Use the Move Up and Move Down buttons to change
this order. The node at the top of the list will be evaluated
first. After the first node has matched, the message is assigned to
that node and no further evaluation takes place.
- Click Finish to complete the configuration and close the
wizard.
To configure an external node
- Open the Node Configuration editor if it is not already
open.
- Select the
Nodes folder in the console tree.
- Click
on the
Configuration toolbar to open the Node Configuration
editor.
- In the Nodes list, right-click
the external node you want to configure to open the External
Node Properties dialog box. Use the tabs to display information
about the selected node and to configure it:
- General:
provide a required caption and an optional description.
- Details:
provide the owner information and specify the node match
pattern.
- Order:
displays the order of evaluation for the existing external
nodes.
- Outage:
displays the current outage state.
- Click Apply as you finish with a tab to apply your
changes.
- Click OK to confirm your changes and close this dialog
box.
- Click Cancel to close the dialog box without saving your
changes.