The metrics of an event-triggered task of the system monitoring type are measured at the scaling group level. The metric value is the average value of monitoring data for all instances in the scaling group. When the number of instances in a scaling group changes, the metric value is also updated. This topic describes the metrics that are supported by event-triggered tasks of the system monitoring type.
ECS metrics
The following table describes the metrics of Elastic Compute Service (ECS) instances that are supported by event-triggered tasks of the system monitoring type.
Collection source | Metric (Auto Scaling console) | Metric (Auto Scaling API) | Unit | Statistical period | Supported network |
ECS instances | (ECS) CPU Utilization | CpuUtilization | % |
| Virtual Private Cloud (VPC) and classic network |
(ECS) ECS Concurrent Connections | ConcurrentConnections | None | VPC and classic network | ||
(ECS) Internal Network Outbound Traffic | IntranetTx | Kb/min | VPC and classic network | ||
(ECS) Internal Network Inbound Traffic | IntranetRx | Kb/min | VPC and classic network | ||
(ECS) Public Network Outbound Traffic | VpcInternetTx | Kb/min | VPC and classic network | ||
(ECS) Public Network Inbound Traffic | VpcInternetRx | Kb/min | VPC and classic network | ||
(ECS) System Disk Read (BPS) | SystemDiskReadBps | Byte/s | VPC and classic network | ||
(ECS) System Disk Write (BPS) | SystemDiskWriteBps | Byte/s | VPC and classic network | ||
(ECS) System Disk Read (IOPS) | SystemDiskReadOps | None | VPC and classic network | ||
(ECS) System Disk Write (IOPS) | SystemDiskWriteOps | None | VPC and classic network | ||
CloudMonitor | (Agent) CPU Utilization | CpuUtilizationAgent | % |
| VPC and classic network |
(Agent) GPU Utilization | GpuUtilizationAgent | % | VPC and classic network | ||
(Agent) Idle GPU Memory Percentage | GpuMemoryFreeUtilizationAgent | % | VPC and classic network | ||
(Agent) GPU Memory Usage | GpuMemoryUtilizationAgent | % | VPC and classic network | ||
(Agent) Memory | MemoryUtilization | % | VPC and classic network | ||
(Agent) Average System Load | LoadAverage | None | VPC and classic network | ||
(Agent) Total TCP Connections | TcpConnection | None | VPC and classic network | ||
(Agent) Established TCP Connections | TcpConnection | None | VPC and classic network | ||
(Agent) Internal Network Packets Sent | PackagesNetOut | Count/s | VPC and classic network | ||
(Agent) Internal Network Packets Received | PackagesNetIn | Count/s | VPC and classic network | ||
(Agent) Public Network Packets Sent | PackagesNetOut | Count/s | Classic network | ||
(Agent) Public Network Packets Received | PackagesNetIn | Count/s | Classic network |
If you select CloudMonitor as the collection source, Auto Scaling installs the CloudMonitor agent on all instances in the specified scaling group. You can enable Automatically Install CloudMonitor Agent on Newly Purchased ECS Instances in the CloudMonitor console to ensure that the monitoring data of new ECS instances can be collected.
If you want to select GPU metrics, make sure that GPU drivers are installed on GPU-accelerated instances. For more information, see Installation guideline for NVIDIA drivers.
Elastic Container Instance metrics
The following table describes the metrics of elastic container instances that are supported by event-triggered tasks of the system monitoring type.
Collection source | Metric (Auto Scaling console) | Metric (Auto Scaling API) | Unit | Statistical period | Supported network |
CloudMonitor | CPU Utilization | EciPodCpuUtilization | % |
| VPC |
Memory | EciPodMemoryUtilization | % |
ALB metrics
If you associate a scaling group of the ECS type or Elastic Container Instance type with an Application Load Balancer (ALB) instance, you can use the (ALB) QPS per Backend Server metric to monitor the resource usage in the scaling group.
Collection source | Metric (Auto Scaling console) | Metric (Auto Scaling API) | Unit | Statistical period | Supported network |
ALB server group | (ALB) QPS per Backend Server | LoadBalancerRealServerAverageQps | Count/s | 15 seconds, 1 minute, 2 minutes, 5 minutes, and 15 minutes Note The 15-second statistical period is available only for scaling groups of the ECS type. | VPC |