5.1 Introduction
5.2 Tower 4Clouds Architecture
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5.3 Application Configuration Model
5.4 Monitoring Rules
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monitoredTargets, where a list of monitored resources is identified by either class, type or id;
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collectedMetric, where the metric to be collected is specified together with any data collector-specific parameter;
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metricAggregation, where the aggregation among average, percentile, sum, count, max, min of collected data is selected as well as whether the aggregation should be over all data or grouped by a specific class of resources (e.g., by cloud provider, or by vm);
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condition, where a condition to be verified can be expressed predicating on the aggregated value;
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actions, the action to be executed given the condition is satisfied (if any).