Showing posts with label Dependency roll up monitor. Show all posts
Showing posts with label Dependency roll up monitor. Show all posts

Sunday, February 6, 2011

Management pack components


Object discovery: management packs contains items necessary to discover managed objects. Discovery can be accomplished with registry , WMI, scripting, OLE DB, LDAP or custom code. If too much is discovered use override to limit the object discovery,

Monitors: which determine health information and make sure items are working within specifications. Raise an alert if no. only state change events are stored in the data warehouse for future reporting.

n      Roll up monitors: aggregate rollup monitors, dependency roll up monitors.
n      Unit monitors: SNMP, WMI performance, log files, windows events, windows services, windows performance counters, scripting, WMI events

Aggregate rollup monitors

is a collection of several other monitors, state can be monitored on either a best – case or worst             case basis.

  • Best case – if any one of the child monitors is healthy, the overall aggregate monitor will show up healthy.
  • Worst case – if any one of the child monitors is not healthy, the overall aggregate monitor will not be healthy.
Dependency roll up monitor: very similar to roll up monitor but more flexible and granular
Example: Will raise an alert if 5 or 8 DNS servers are down.

Rules: a rule is capable of raising an alert to an operator, but the objects included in the rule cannot be monitored for health.

Tasks: like the name implies, an MP task is a method that performs some action based on rules that are defined. Among other actions a task can run a program or script or reset a failed service.

Views: customized look at items that might be unique to a particular management pack.

Knowledge: what caused a particular alert? How was it addressed?

Run as profile: discovering objects, running scripts and gathering information requires credentials that can access the appropriate resource. 
 
Windows credentials
SNMP community string
Basic authentication
Digest authentication
Binary authentication
Action account

Overrides: is a way by which an operator can customize a sealed management pack.