Alerts are messages an agent sends to TIBCO Hawk WebConsole when a specified condition occurs. Alerts originate from rulebases that enforce your monitoring logic. In TIBCO Hawk WebConsole, the colors of each agent and container icon summarize alert levels, and the Alert Display window shows alert details for a particular agent or all agents.
You can temporarily suspend an alert message, to prevent it from interfering with other monitoring tasks. For example, if a condition such as process failure is generating a high-level alert with a warning bell and the problem is being worked on, you can suspend the alert until the problem is resolved. Suspension details are added to the properties of the message. These details are visible to you and other TIBCO Hawk WebConsole users, as well as all Console API applications.
Suspending an alert message affects only the action that generated the alert. If the condition that generates the alert message also generates another type of action, such as attempting to restart the process, that action is unaffected.
Alert suspension is lifted either when the suspension interval ends or when a user invokes the
resumeSuspendedAlerts method of the
RuleBaseEngine microagent. For more information on microagent methods, see the
TIBCO Hawk Microagent Reference.
Alerts are cleared when the alert condition, as defined by the rulebase, ceases to exist. Alerts generated by tests on synchronous data sources, which deliver data at fixed intervals, are cleared by default at the first test repetition when the condition no longer holds. Alerts generated by tests on asynchronous data sources, which deliver data when it becomes available, are cleared by default when the test does not evaluate to true for 15 minutes. You can modify this default behavior using advanced test and action properties in the rule. For more information, see the
TIBCO Hawk WebConsole User’s Guide.
When you create an action that creates an alert, you may find it useful to include text that describes how the alert is cleared. For example, if an alert is raised when free disk space falls below 10% and is cleared only when disk space is above 15%, the alert text could be: "Free disk space is 11.6%; this alert will be cleared when the free disk space exceeds 15%. "
Active alerts are kept until cleared, and cleared alerts are purged by TIBCO Hawk WebConsole when a buffer limit is reached. To view purged alerts, you can examine Event Service data files (if configured), where all alerts are written as they are raised and cleared. For more information on the TIBCO Hawk Event Service, see the
TIBCO Hawk Installation, Configuration, and Administration Guide.
Items such as rulebase duplications, rulebase application errors and agent discovery errors are displayed in the Console Warning Window. When TIBCO Hawk WebConsole generates or receives these messages, the Console Warning Messages icon starts animating. Clicking on this icon will bring the Console Warning Messages window to the foreground.
