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Servers: Services: SNMP
Column Display Related Tasks Related Topics
This page summarizes the SNMP attribute changes, log filters, and SNMP monitors that have been targeted to this server.
For information on seeing all servers to which an attribute change, log filter, or SNMP monitor has been targeted, refer to the related tasks in this topic.
Attribute changes configure the SNMP agent to send a trap immediately after a configuration attribute is changed in any way. For example, you can configure an attribute change that sends a trap whenever a server's listen address changes.
A log filter enables WebLogic Server to generate traps when subsystems or applications generate log messages.
WebLogic SNMP monitors poll WebLogic Server MBeans at a specified interval to check for the occurrence of conditions or the crossing of thresholds. When a monitor detects the specified condition, it sends a trap to the configured trap destinations. WebLogic Server supports three types of monitors:
- A string monitor periodically polls an attribute whose value is a string and generates a trap if the attribute value matches a string that you specify. Alternatively, you can specify that the monitor generates a trap if the attribute value does not match your string.
- A gauge monitor indicates whether an attribute is operating within a specific range.
- A counter monitor indicates whether an attribute value is above a specific threshold.
Column Display
Name Description Name The name that you specified when you created the attribute change.
Monitored MBean Type The MBean type that defines the attribute you want to monitor. Do not include the
MBean
suffix. For example,Server
.WebLogic Server does not support using Attribute Change trap notifications to monitor run-time attributes. Runtime MBeans always include the word
Runtime
in their names. For example, theServerRuntime
MBean provides access to runtime attributes while theServer
MBean provides access to configuration attributes. To monitor changes in an MBean that includesRuntime
in its name, use a String Monitor, Gauge Monitor, or Counter Monitor.MBean Attribute:
SNMPAttributeChangeMBean.AttributeMBeanType
Changes take effect after you redeploy the module or restart the server.
Monitored MBean Name The name of the MBean instance that you want to monitor. If you leave the name undefined, WebLogic Server monitors all instances of the MBean type that you specify in Monitored MBean Type.
Do not enter the full JMX object name of the MBean instance. Instead, enter only the value that you provided when you created the instance. To create unique MBean object names, WebLogic Server encodes several name-value pairs into each object name. One of these pairs is
Name=name
, and this is the value that you enter for MBean Name. For example:
"MedRec:Name=MedRecServer,
Type=ServerRuntime"In the previous example, specify
MedRecServer
as the name of the MBean instance.MBean Attribute:
SNMPAttributeChangeMBean.AttributeMBeanName
Changes take effect after you redeploy the module or restart the server.
Monitored Attribute Name The name of the attribute that you want to monitor. This attribute must be in the WebLogic Server MIB.
MBean Attribute:
SNMPAttributeChangeMBean.AttributeName
Changes take effect after you redeploy the module or restart the server.
Enabled Servers The list of target servers for trap generation. If no server is specified, no trap will be generated.
MBean Attribute:
SNMPAttributeChangeMBean.EnabledServers
Changes take effect after you redeploy the module or restart the server.
Column Display
Name Description Name The name that you specified when you created the log filter.
Severity Level The minimum severity of a message that causes WebLogic Server to generate a trap.
MBean Attribute:
SNMPLogFilterMBean.SeverityLevel
Changes take effect after you redeploy the module or restart the server.
Subsystem Names A list of subsystems whose messages are selected by this log filter. If none are specified, messages from all subsystems are selected.
MBean Attribute:
SNMPLogFilterMBean.SubsystemNames
Changes take effect after you redeploy the module or restart the server.
User IDs A list of user IDs that causes WebLogic Server to generate a trap.
Every message includes the user ID from the security context in which the message was generated.
If the user ID field for a message matches one of the user IDs you specify in the filter, WebLogic Server generates a trap.
If this log filter doesn't specify user IDs, WebLogic Server can generate a trap for messages from all user IDs.
MBean Attribute:
SNMPLogFilterMBean.UserIds
Changes take effect after you redeploy the module or restart the server.
Message IDs A list of message IDs or ID ranges that cause WebLogic Server to generate a trap.
If no IDs are specified, this filter selects all message IDs.
Example list: 20,50-100,300
MBean Attribute:
SNMPLogFilterMBean.MessageIds
Changes take effect after you redeploy the module or restart the server.
Message Substring A string that is searched for in the message text. Only messages that contain the string are selected. If a string is not specified, all messages are selected.
MBean Attribute:
SNMPLogFilterMBean.MessageSubstring
Changes take effect after you redeploy the module or restart the server.
Enabled Servers The list of target servers for trap generation. If no server is specified, no trap will be generated.
MBean Attribute:
SNMPLogFilterMBean.EnabledServers
Changes take effect after you redeploy the module or restart the server.
Column Display
Name Description Name The name that you specified when you created the SNMP monitor.
Type The type of SNMP monitor.
Monitored MBean Type Monitored MBean Name Monitored Attribute Name Polling Interval Enabled Servers Agent Name The user-specified name of this MBean instance.
This name is included as one of the key properties in the MBean's
javax.management.ObjectName
:
Name=user-specified-name
MBean Attribute:
SNMPAgentMBean.Name
Changes take effect after you redeploy the module or restart the server.
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