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7.14. Setting Discovery Scan Intervals
The agent scans a platform routinely to look for new servers or services to add to the discovery queue and, subsequently, to inventory. There are several different parameters which set scan intervals:
- The scan interval for servers, set in the
rhq.agent.plugins.server-discovery.period-secs. The default is 900 seconds (15 minutes). - The scan interval for services, set in the
rhq.agent.plugins.service-discovery.period-secs. The default is 86400 seconds (24 hours). - The scan interval for low-level child services, set in the
rhq.agent.plugins.child-discovery.delay-secs. The default is five (5) seconds.Immediate children are discovered as soon as the parent resource is discovered. However, lower-level children are discovered on a subsequent discovery scan. This sets a delay between the initial import and the next discovery scan.
These are set in the
agent-configuration.xml file, so the configuration must be cleanly reloaded before the changes take effect.
- Open the agent prompt. For example, if the agent process is already running, the prompt can be opened by re-running the
rhq-agent.shscript with the-noption.agentRoot/rhq-agent/bin/rhq-agent.sh -n
- Use the
setconfigcommand to reset the discovery scan intervals. The preference name is whatever the entry name is in theagent-configuration.xmlfile. For example:> setconfig rhq.agent.plugins.server-discovery.period-secs=600 > setconfig rhq.agent.plugins.service-discovery.period-secs=1440 > setconfig rhq.agent.plugins.child-discovery.delay-secs=60
- Restart the agent process to load the new configuration. For example, if the agent is running as a service:
[root@server ~]# service rhq-agent-wrapper.sh stop [root@server ~]# service rhq-agent-wrapper.sh start
