This topic describes the metrics that are supported by event-triggered tasks for system monitoring.

Monitoring metrics

The metrics of an event-triggered task for system monitoring are measured at the scaling group level. The metric value is the average value of monitoring data for all ECS instances in the scaling group. When the number of ECS instances in a scaling group changes, the monitoring metric value is also updated.

The following table lists the monitoring metrics that are supported by event-triggered tasks for system monitoring.

Collection source Metric Unit Applicable network
ECS instance (ECS) CPU Usage % VPCs and classic network
(ECS) Outbound Internal Network Traffic KByte/min VPCs and classic network
(ECS) Inbound Internal Network Traffic KByte/min VPCs and classic network
(ECS) Outbound Public Network Traffic KByte/min VPCs and classic network
(ECS) Inbound Public Network Traffic KByte/min VPCs and classic network
(ECS) System Disk Read (Byte/s) Byte/s VPCs and classic network
(ECS) System Disk Write (Byte/s) Byte/s VPCs and classic network
(ECS) System Disk Read (IOPS) Request/s VPCs and classic network
(ECS) System Disk Write (IOPS) Request/s VPCs and classic network
CloudMonitor agent (Agent) CPU Utilization % VPCs and classic network
(Agent) GPU Utilization % VPCs
(Agent) Idle GPU Memory Percentage % VPCs
(Agent) GPU Memory Utilization % VPCs
Agent (Memory) % VPCs and classic network
(Agent) Average System Load None VPCs and classic network
(Agent) Total TCP Connections Connection VPCs and classic network
(Agent) TCP Connections Established Connection VPCs and classic network
(Agent) Internal Network Packets Sent Packet VPCs and classic network
(Agent) Internal Network Packets Received N/A VPCs and classic network
(Agent) Public Network Packets Sent N/A Classic network
(Agent) Public Network Packets Received N/A Classic network

If you select CloudMonitor as the collection source, Auto Scaling installs the CloudMonitor agent for all instances in the associated scaling group. Enable New purchase ECS automatically installs cloud monitoring in the CloudMonitor console to make sure that the monitoring data of newly purchased ECS instances can be collected.

If you want to select GPU monitoring metrics, make sure that GPU drivers are installed on instances with GPUs.