6.6

Changing the Order of Services
The exact order in which services start and stop is influenced by a number of key factors:
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The order of applications specified by plug-ins determines which services are started first.
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Services can have dependencies which must be respected. For example, if service B is listed after service
A under the User-Defined group, and service A depends on Service B, Service B starts first.
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Multiple applications using the same service (the same service can appear under more than one sponsor).
The service starts when the first application to reference it starts.
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The order of stopping services is the reverse for starting services.
Procedure
◆
To modify the order in which the services start and stop, use the Up and Down arrows.
Remove a Service
Procedure
1 Select the service to remove in the Applications: Services page.
2 Click Remove.
A confirmation message is displayed.
3 Click Yes.
The service is removed from the protected list.
Managing Tasks
Tasks are a generalization and extension of start, stop, and monitor scripts with task types determined by when
the tasks run. Task types include the following:
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Network Configuration – Run when applications start and is intended to launch dnscmd or DNSUpdate.This
task can launch a batch script containing multiple dnscmd commands. Network Configuration tasks are
the only types of task that can vary between the Primary and Secondary nodes.
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Periodic – Run at specific configurable intervals
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Pre/Post Start – Run before and after services start on the active node
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Pre/Post Stop – Run before and after services stop on the active node
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Pre/Post Shadow – Run before and after the Data Rollback Module creates a shadow copy on the active
node (Not available in this release)
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Rule Action – A configurable task run in response to a triggered rule or when a service check fails
Tasks can be defined and implemented by plug-ins, users, or can be built-in tasks defined by vCenter Server
Heartbeat. User defined tasks are implemented as command lines, which can include launching a batch script.
Examples of built-in tasks include monitoring a protected service state on the active and passive nodes. An
example of a plug-in-defined task is the discovery of protected data and services for a particular application.
The vCenter Server Heartbeat Applications:Tasks page provides a list of tasks and associated status information,
and includes features to quickly manage tasks.
58 VMware, Inc.
vCenter Server Heartbeat Administrator's Guide