EAA environment variables
EAA environment variables decouple the configuration of action arguments from the monitor policy so you can modify a policy easily.
An EAA environment variable is defined as a <variable_name variable_value> pair and can be used in different policies. When you define an action, you can enter a variable name with a leading dollar sign ($variable_name). EAA will replace the variable name with the variable value when it performs the action.
To change the value for an action argument, modify the value specified in the variable pair instead of editing each affected monitor policy.
EAA environment variables include system-defined variables and user-defined variables.
System-defined variables
System-defined variables are provided by default, and they cannot be created, deleted, or modified by users. System-defined variable names start with an underscore (_) sign. The variable values are set automatically depending on the event setting in the policy that uses the variables.
System-defined variables include the following types:
Public variable—Available for any events.
Event-specific variable—Available only for a type of event.
Table 20 shows all system-defined variables.
Table 20: System-defined EAA environment variables by event type
Variable name | Description |
|---|---|
Any event: | |
_event_id | Event ID. |
_event_type | Event type. |
_event_type_string | Event type description. |
_event_time | Time when the event occurs. |
_event_severity | Severity level of an event. |
CLI: | |
_cmd | Commands that are matched. |
Syslog: | |
_syslog_pattern | Log message content. |
Hotplug: | |
_slot | ID of the member device that joins or leaves the IRF fabric. |
_subslot | ID of the subslot where subcard hot-swapping occurs. Only the HPE FlexFabric 5940 2-slot switch (JH397A) and HPE FlexFabric 5940 4-slot switch (JH398A) support subcards. |
Interface: | |
_ifname | Interface name. |
SNMP: | |
_oid | OID of the MIB variable where an SNMP operation is performed. |
_oid_value | Value of the MIB variable. |
SNMP-Notification: | |
_oid | OID that is included in the SNMP notification. |
Process: | |
_process_name | Process name. |
User-defined variables
You can use user-defined variables for all types of events.
User-defined variable names can contain digits, characters, and the underscore sign (_), except that the underscore sign cannot be the leading character.