![]() If the conditions are met, an alert is fired. There's no charge for Prometheus alerts during the preview period.Ī metric alert rule monitors a resource by evaluating conditions on the resource metrics at regular intervals. The alert rules are based on PromQL, which is an open-source query language. Prometheus alerts are primarily used for alerting on performance and health of Kubernetes clusters, including Azure Kubernetes Service. Service Health alerts and Resource Health alerts let you know when there's an issue with one of your services or resources.įor more information, see the pricing page. Use activity log alerts to be alerted when a specific event happens to a resource like a restart, a shutdown, or the creation or deletion of a resource. For log alerts configured for at-scale monitoring, the cost also depends on the number of time series created by the dimensions resulting from your query.Īctivity logs provide auditing of all actions that occurred on resources. More frequent query evaluation results in a higher cost. If the data you want to monitor is available in logs, or requires advanced logic, you can use the robust features of Kusto Query Language (KQL) for data manipulation by using log alerts.Įach log alert rule is billed based on the interval at which the log query is evaluated. You can use log alerts to perform advanced logic operations on your data. Use metric alerts if the data you want to monitor is available in metric data.Įach metric alert rule is charged based on the number of time series that are monitored. Metric alerts are useful when you want to be alerted about data that requires little or no manipulation. Metric data is stored in the system already pre-computed. For more information about pricing, see the pricing page. The information in this table can help you decide when to use each type of alert. It helps you understand when to use each type of alert. This article describes the kinds of Azure Monitor alerts you can create.
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