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Nodes in HPOM

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Note: HP renamed the product called now HP operations manager way too many times. Also it is very inconsistent with using abbreviations. Here we will assume that the term "HP Operations manager" and abbreviations HPOM, OMU, and OVO  mean the same thing :-)

Node in HPOM is a computer with the agent installed or computer with SNMP installed that sends information to HPOM manager. Different types of nodes managed by HPOM are brought into the configuration, including

Listing nodes

root@unlab12:/opt/OV # opcnode -list_nodes
List of all Nodes in the HPOM database:
====================================================================
Name         = unlab12.rockaway.firma.com
Label        = unlab12
IP-Address   = 10.194.146.2
Network Type = NETWORK_IP
Machine Type = MACH_BBC_LX26RPM_X64
Comm Type    = COMM_BBC
DHCP enabled = no (0x22)
====================================================================
Operation successfully completed.

HPOM does not create nodes automatically. You must add the desired node to the Node Bank first.

If the node is fully managed, a Node Configuration window appears and waits for you to verify the default settings or make changes. After you click OK, the information about the node is stored in the database. The node is not yet installed with the agent software; you will perform this task after the node configuration is complete. If the node is only sending events to HPOM in the GUI, use the Add Node for External Events window. Although the GUI method is described here, there are commands to accomplish the same tasks.

There are several methods to add nodes to the Node Bank. (Refer to the HPOM Administrator's Reference, Volume I for more detailed information.) Examples of the process to add nodes to the Node Bank are shown here for reference. Each example assumes that a selection is made from the menu.

Example 1: Actions→Node→Add

This method is ideal for installing one node at a time. You need to provide the hostname of the node you want to add. HPOM then attempts to determine additional attributes (IP address, system type, and so on) by querying the node's SNMP agent. If an SNMP agent is not running on the managed node, you will need to set the machine type manually in the configuration window.

Example 2: Edit→Copy

Locate the node in the root map, by selecting Edit→Find→Object by Selection Name (or some other attribute; see the list in the Selection Window). Once you have identified the node, select the node, and from the menu select Edit. In the HPOM Node Bank, select the menu item Edit→Copy. The new node appears in the Node Bank. A drag/drop from the ipmap would also work to add the node to the Node Bank.

Example 3: Open the Node Group Bank, double-click with the left-mouse button on a node group icon, and then select from the menu, Actions→Node→Add

This is similar to Example one, just a different menu location. Add a new node to the node group and it will automatically appear in the Node Bank (Holding Area). Here you could also use the Menu option Edit→Copy, Edit→Paste. Node Groups are covered in more detail in Section 13.9.2.

Example 4: Actions→Node→Add for External Events

Use this method for managing devices that typically do not have the HPOM agent installed but are capable of sending their events to a node that does have an HPOM agent (a proxy node) or directly to the server. When the event arrives on the managed node, it is transformed into an HPOM massage and sent to the server. A use case is to manage SNMP devices like routers, bridges, network printers this way. The external events icon changes status as the messages from the external nodes are processed on the server. When the window “Add Node for External Events” opens, provide a label name for the icon in the GUI.
 

Select the Network Type, IP-Addr, IP-Name, or Others. This determines what type of entry you will use in the Node Pattern field. For example, if you use IP addresses in the Node Pattern Field, select IP-Addr. Provide a Node Pattern, which is actually a node name pattern (such as *.hp.com). The Node Pattern field can contain wild cards for the IP address range if there are many nodes on one a network that will send events to the server (i.e. 192.14.*.*). Other options for the address range can include and exclude specific IP numbers (i.e. 192.14.123. <5 –le [<#>] –lt 72>. Finally, select the Type of Node, Message Allowed (in order to enable the events from the external node(s) to appear in the browser). The external node icon is located in the node bank with the other node types as shown in Figure 13-7. Configure the external device to send SNMP events to the HPOM server.

Example 5: Upload the node configuration from the command line.

Example 6: Command line method, see the man page for opcnode.



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