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HPOM Instrumentation: Category based deployment of files to nodes

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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 :-)

Categories has is a strange name that is used by HPOM for subdirectories (and associated content) that can be distributed automatically to all nodes that are signed a particular policy when you distribute policies.  They also can be assigned to individual nodes. Categories associate instrumentation files with nodes or policies. It is essentially a directory in instrumentation folder. It allows to deploy only selected files to one of several nodes (which should be assigned this category), not everything. The process is very simple and involves three steps

There are two instrumentation directories in HPOM : server directory (source directory for the instrumentation directories) and agent directory.

Subdirectories with names corresponding to categories exist only inside server directory. On nodes the instrumentation directory has flat structure. That means that names of files should be unique. 

You can distribute policies from an individual node or a node group. You can check policies assignments from browse/all policy assignments

When you define category, e.g. Ora_archive_mon you essentially create subdirectory Ora_archive_mon with associated subdirectory structure inside it in server instrumentation directory  /var/opt/OV/share/databases/OpC/mgd_node/instrumentation

It is done automatically. After that you can manually copy related files to this directory and assign this category to either the individual policy (preferable) or node (sometimes necessary). Each time you distribute policy files for the associated category (or categories) will be distributed to each node to which this policy was assigned.  This is essentially configuration management type of operation that is built-in in HPOM.

In case of policies,  assigning category to one of the polices that constitute a group is enough and its effect is equivalent to assigning category to the policy group.

Categories associates instrumentation files with individual nodes or policies

Both the ability to assign categories to nodes and to policies are useful, but the second method (assigning category to a policy) is more useful then the first.  In this case you are getting a slick mechanism of deploying necessary files to several related nodes to which policy is assigned, for example all Solaris Nodes, or all nodes with Oracle installed.  This is a basic but still very useful software distribution mechanism built in HPOM 9. No more no less. 

Categories can be assigned to individual policies, or nodes.  They can't be assigned to policy groups or node groups. The latter is a serious limitation !

You can assign category to a node if you need a quick method of transferring a large group of files to specific node. Otherwise it's much better to use assignment of category to a policy. 

Possible Problems

Note:

You can retrieve and redistribute files from/to multiple host using technique called Slurping  and related tools


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[May 02, 2013] Categories

Categories associate instrumentation files (files that are used by scripts that are used in policies) with nodes or policies.

Each category is essentially a directory in instrumentation folder where you can put all the files that are used by particular script. For example configuration file, some scripts that are called, etc.

They allow deployment of related files

Configuration

[Aug 12, 2011] Vivit09_A03_Hubbard-Nisi_BES-HP

Concept and Configuration

Associate instrumentation files with nodes or policies

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Using Categories


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