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HP Operations Manager is a System monitoring package manufactured by Hewlett-Packard (HP). It operates in 'agent-push' mode, which means that a software agent component installed on the monitored hosts sends selected alerts to a centralized Management Server. These agents carry out the instructions specified in HP-OM rule-sets called Policies. Distributing this processing around the client nodes reduces the load on both the management server and the network, by configuring these policies〔Video overview of policy configuration - http://www.youtube.com/watch?v=cM2ik2mbZO0〕 to select and transmit only the events that are needed, unlike the communication-heavy SNMP method. However, SNMP can be used where there is no supported operating system on the client equipment. The main task of the agent is to classify each event before transmission (or ignore it), so that the management server can route the messages to the appropriate destinations, which can include operator consoles, trouble-ticket systems, and notification systems. Internally, policies are stored as XML files and distributed from the management server to the managed nodes selected by the administrator, or which have been auto-discovered as needing those policies. A specialised form of pattern matching〔Video on HPOM pattern matching at http://www.youtube.com/watch?v=aLxXSr9XB_8〕 is extensively used to parse events and to pass key variables on to other components of HP-OM, such as the various fields of the output message and the automatic actions, and to generate keys for correlation (see below). ==What can be monitored?== Policies can get events from various sources: * The opcmsg utility, which can be programmed into your own scripts to send a message direct to the agent. * User-specified programs which return numeric values (via the opcmon utility) to be compared with thresholds that are easily set in the policies. This is much more controllable than burying threshold values inside programs. * Log file tailing. * User-specified programs returning text output. * Windows Management Instrumentation. * SNMP traps - SNMP v3 on the way soon. * SNMP GetRequest * Service and process status * Performance Metrics. These are collected on all managed nodes, and can also be accessed graphically using the now-integrated Performance Manager. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「HP Operations Manager」の詳細全文を読む スポンサード リンク
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