The following table shows the monitoring indicators supported by AS.

Indicator	Names	Description	Range	Measurement Object & Dimension	Monitoring Cycle (Original Indicator)
cpu_util	CPU usage	It is the CPU usage of an AS group.	≥0%	Measurement Object: Elasticity	5 minutes
Calculation formula: Total CPU usage of all ECSs in an AS group/Number of ECSs in an AS group Unit: Percentage	Measurement dimension of an AS group: AutoScalingGroup
mem_util	Memory usage	It is the memory usage of an AS group in percentage. Calculation formula: Total memory usage of all ECSs in an AS group/Number of instances in an AS group Unit: Percentage This indicator is unavailable if the image has not installed vmtools.	≥0%	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
instance_num	Number of instances	It is the number of available ECSs in an AS group. Calculation formula: Total number of ECSs inEnabledstate in an AS group	≥0	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
network_inc oming_bytes _rate_inband	In-band ingress rate	Number of inbound traffic per second on an ECS in an AS group Calculation formula: Total in-band inbound traffic of all ECSs in an AS group /Number of instances in the AS group Unit: Byte/s	≥0 Byte/s	Measurement object: Measurement dimension of an AS group: AutoScalin gGroup	5 min
network_out going_bytes _rate_inband	In-band outbound rate	Number of outbound traffic per second on an ECS in an AS group Calculation formula: Total in-band outbound traffic of all ECSs in an AS group /Number of instances in the AS group Unit: Byte/s	≥0 Byte/s	Measurement object: Measurement dimension of an AS group: AutoScalin gGroup	5 min
disk_read_bytes_rate	Disk read rate	It is the number of bytes read from an AS group per second. Calculation formula: Total disk read rates of all ECSs in an AS group	≥0 Byte/s	Measurement object: Measurement dimension of an AS group	5 min
/Number of instances in an AS group Unit: Byte/s	Measurement dimension of an AS group: AutoScalin gGroup
disk_write_b ytes_rate	Disk write rate	It is the number of bytes written to an AS group per second. Calculation formula: Total disk write rates of all ECSs in an AS group/Number of instances in the AS group Unit: Byte/s	≥0 Byte/s	Measurement object: Measurement dimension of an AS group: AutoScalin gGroup	5 min
disk_read_re quests_rate	Disk read rate	It is the number of read requests per second sent to an ECS disk in an AS group. Calculation formula: Total disk read rates of all ECSs in an AS group/Number of instances in the AS group Unit: Request/s	≥0 request/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
disk_write_r equests_rate	Disk write rate	It is the number of write requests per second sent to an ECS disk in an AS group. Calculation formula: Total disk write rates of all ECSs in an AS group/Number of instances in the AS group Unit: Request/s	≥0 request/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
/Number of instances in an AS group Unit: Byte/s	Measurement dimension of an AS group: AutoScalin gGroup
disk_write_b ytes_rate	Disk write rate	It is the number of bytes written to an AS group per second. Calculation formula: Total disk write rates of all ECSs in an AS group/Number of instances in the AS group Unit: Byte/s	≥0 Byte/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
disk_read_re quests_rate	Disk read request rate	It is the number of read requests per second sent to an ECS disk in an AS group. Calculation formula: Total disk read rates of all ECSs in an AS group/Number of instances in the AS group Unit: Request/s	≥0 request/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
disk_write_requests_rate	Disk write request rate	It is the number of write requests per second sent to an ECS disk in an AS group. Calculation formula: Total disk write rates of all ECSs in an AS group/Number of instances in the AS group Unit: Request/s	≥0 request/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
/Number of instances in an AS group Unit: Byte/s	Measurement dimension of an AS group: AutoScalin gGroup
disk_write_b ytes_rate	Disk write rate	It is the number of bytes written to an AS group per second. Calculation formula: Total disk write rates of all ECSs in an AS group/Number of instances in the AS group Unit: Byte/s	≥0 Byte/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
disk_read_re quests_rate	Disk read request rate	It is the number of read requests per second sent to an ECS disk in an AS group. Calculation formula: Total disk read rates of all ECSs in an AS group/Number of instances in the AS group Unit: Request/s	≥0 request/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min
disk_write_r equests_rate	Disk write request rate	It is the number of write requests per second sent to an ECS disk in an AS group. Calculation formula: Total disk write rates of all ECSs in an AS group/Number of instances in the AS group Unit: Request/s	≥0 request/s	Measurement object: Measurement dimension of an AS group: AutoScalingGroup	5 min

Auto Scaling

Monitoring Indicator Description