DescribeAlarms - Auto Scaling - Alibaba Cloud Documentation Center

Queries event-triggered tasks. You can call the DescribeAlarms operation to learn about the configurations of event-triggered tasks and keep updated on monitoring data changes. This helps you troubleshoot system resource issues at the earliest opportunity and ensures system stability and reliability.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter	Type	Required	Example	Description
Action	String	Yes	DescribeAlarms	The operation that you want to perform. Set the value to DescribeAlarms.
RegionId	String	Yes	cn-qingdao	The region ID of the event-triggered task.
ScalingGroupId	String	No	asg-bp18p2yfxow2dloq****	The ID of the scaling group that is monitored by the event-triggered task.
AlarmTaskId	String	No	asg-bp1hvbnmkl10vll5**_f95ce797-dc2e-4bad-9618-14fee7d1**	The ID of the event-triggered task.
State	String	No	OK	The status of the event-triggered task. Valid values: ALARM: The alert condition is met and an alert is triggered. OK: The alert condition is not met. INSUFFICIENT_DATA: Auto Scaling cannot determine whether the alert condition is met due to insufficient data.
IsEnable	Boolean	No	true	Specifies whether to enable the event-triggered task feature. Valid values: true: enables the event-triggered task feature. false: disables the event-triggered task feature.
MetricType	String	No	system	The type of the metric used by the event-triggered task. Valid values: system: system metrics of CloudMonitor. custom: custom metrics that are reported to CloudMonitor
MetricName	String	No	CpuUtilization	The metric name.
PageSize	Integer	No	10	The number of entries per page. Maximum value: 50. Default value: 10.
PageNumber	Integer	No	1	The page number. Minimum value: 1. Default value: 1.

Response parameters

Parameter	Type	Example	Description
PageSize	Integer	10	The number of entries per page.
RequestId	String	871C7C53-34A4-45AA-8C14-4B72FA6A****	The request ID.
PageNumber	Integer	1	The page number.
TotalCount	Integer	2	The total number of event-triggered tasks.
AlarmList	Array of Alarm		The event-triggered tasks.
Alarm
AlarmTaskId	String	asg-bp1hvbnmkl10vll5**_f95ce797-dc2e-4bad-9618-14fee7d1**	The ID of the event-triggered task.
MetricName	String	CpuUtilization	The metric name. Valid values: CpuUtilization (ECS): the CPU utilization. Unit: %. ConcurrentConnections (ECS): the number of concurrent connections. IntranetTx (ECS): the outbound traffic over an internal network. Unit: KB/min. IntranetRx (ECS): the inbound traffic over an internal network. Unit: KB/min. VpcInternetTx (ECS): the outbound traffic over a virtual private cloud (VPC). Unit: KB/min. VpcInternetRx (ECS): the inbound traffic over a VPC. Unit: KB/min. SystemDiskReadBps (ECS): the number of bytes read from the system disk per second. SystemDiskWriteBps (ECS): the number of bytes written to the system disk per second. SystemDiskReadOps (ECS): the read IOPS of the system disk. Unit: counts/s. SystemDiskWriteOps (ECS): the write IOPS of the system disk. Unit: counts/s. CpuUtilizationAgent (Agent): the CPU utilization. Unit: %. GpuUtilizationAgent (Agent): the GPU utilization. Unit: %. GpuMemoryFreeUtilizationAgent (Agent): the idle GPU memory usage. Unit: %. GpuMemoryUtilizationAgent (Agent): the GPU memory usage. Unit: %. MemoryUtilization (Agent): the memory usage. Unit: %. LoadAverage (Agent): the average system load of an agent. TcpConnection (Agent): the total number of TCP connections. TcpConnection (Agent): the number of established TCP connections. PackagesNetOut (Agent): the number of packets sent by the internal network interface card (NIC). Unit: counts/s. PackagesNetIn (Agent): the number of packets received by the internal NIC. Unit: counts/s. PackagesNetOut (Agent): the number of packets sent by the public NIC. Unit: counts/s. PackagesNetIn (Agent): the number of packets that are received by the public NIC. EciPodCpuUtilization: the CPU utilization. Unit: %. EciPodMemoryUtilization: the memory usage. Unit: %. LoadBalancerRealServerAverageQps (ALB): the queries per second (QPS). For more information, see Event-triggered task for system monitoring.
EvaluationCount	Integer	3	The number of times that the threshold must be reached before a scaling rule is executed. For example, if you set this parameter to 3, the average CPU utilization must reach 80% three times in a row before a scaling rule is executed.
State	String	ALARM	The status of the event-triggered task. Valid values: ALARM: The alert condition is met and an alert is triggered. OK: The alert condition is not met. INSUFFICIENT_DATA: Auto Scaling cannot determine whether the alert condition is met due to insufficient data.
Period	Integer	300	The statistical period of the metric data. Unit: seconds. Valid values: 15 60 120 300 900 Note You can set this parameter to 15 seconds only for scaling groups of the ECS type.
ScalingGroupId	String	asg-bp18p2yfxow2dloq****	The ID of the scaling group that is monitored by the event-triggered task.
ComparisonOperator	String	>=	The operator that is used to compare the metric value and the metric threshold. Valid value if the metric value is greater than or equal to the threshold: >=. Valid value if the metric value is less than or equal to the threshold: <=. Valid value if the metric value is greater than the threshold: >. Valid value if the metric value is less than the threshold: <.
Effective	String	* * * * * ?	The period during which the event-triggered task is in effect.
Description	String	Test alarm task.	The description of the event-triggered task.
MetricType	String	system	The metric type. Valid values: system: system metrics of CloudMonitor. custom: custom metrics that are reported to CloudMonitor
Name	String	TestAlarmTask	The name of the event-triggered task.
Threshold	Float	80.0	The threshold of the metric value. If the threshold is reached the specified number of times within the specified period, a scaling rule is executed.
Enable	Boolean	true	Indicates whether the event-triggered task feature is enabled. Valid values: true: The event-triggered task feature is enabled. false: The event-triggered task feature is disabled.
Statistics	String	Average	The statistical method of the metric data. Unit: seconds. Valid values: Average Minimum Maximum
Dimensions	Array of Dimension		The dimensions of the metric.
Dimension
DimensionKey	String	device	The dimension key of the metric. Valid values: user_id: the ID of your Alibaba Cloud account. scaling_group: the scaling group that is monitored. device: the type of the NIC. state: the status of the TCP connection
DimensionValue	String	eth0	The dimension value of the metric. The value of this parameter varies based on the value of DimensionKey. `user_id`: The system specifies the value. `scaling_group`: The system specifies the value. Valid values for `device`: eth0: the internal NIC for instances that reside in the classic network. Only one eth0 NIC exists on each instance of the VPC type. eth1: the public NIC for instances that reside in the classic network. Valid values for `state`: TCP_TOTAL: the total number of TCP connections. ESTABLISHED: the number of TCP connections that are established.
AlarmActions	Array of String	ari:acs:ess:cn-hangzhou:1406926474**:scalingrule/asr-bp163l21e07uh**	The unique identifiers of the scaling rules that are associated with the event-triggered tasks.
Expressions	Array of Expression		The expressions defined in the multi-metric alert rule.
Expression
MetricName	String	CpuUtilization	The names of the metrics in the multi-metric alert rule. Valid values: CpuUtilization (ECS): the CPU utilization. Unit: %. ConcurrentConnections (ECS): the number of concurrent connections. IntranetTx (ECS): the outbound traffic over an internal network. Unit: KB/min. IntranetRx (ECS): the inbound traffic over an internal network. Unit: KB/min. VpcInternetTx (ECS): the outbound traffic over a VPC. Unit: KB/min. VpcInternetRx (ECS): the inbound traffic over a VPC. Unit: KB/min. SystemDiskReadBps (ECS): the number of bytes read from the system disk per second. SystemDiskWriteBps (ECS): the number of bytes written to the system disk per second. SystemDiskReadOps (ECS): the read IOPS of the system disk. Unit: counts/s. SystemDiskWriteOps (ECS): the write IOPS of the system disk. Unit: counts/s. CpuUtilizationAgent (Agent): the CPU utilization. Unit: %. GpuUtilizationAgent (Agent): the GPU utilization. Unit: %. GpuMemoryFreeUtilizationAgent (Agent): the idle GPU memory usage. Unit: %. GpuMemoryUtilizationAgent (Agent): the GPU memory usage. Unit: %. MemoryUtilization (Agent): the memory usage. Unit: %. LoadAverage (Agent): the average system load of an agent. TcpConnection (Agent): the total number of TCP connections. TcpConnection (Agent): the number of established TCP connections. PackagesNetOut: the number of packets sent by the internal NIC. Unit: counts/s. PackagesNetIn: the number of packets received by the internal NIC. Unit: counts/s. PackagesNetOut: the number of packets sent by the public NIC. Unit: counts/s. PackagesNetIn (Agent): the number of packets that are received by the public NIC. EciPodCpuUtilization: the CPU utilization. Unit: %. EciPodMemoryUtilization: the memory usage. Unit: %. LoadBalancerRealServerAverageQps (ALB): the QPS. For more information, see Event-triggered task for system monitoring.
ComparisonOperator	String	>=	The operator that is used to compare the metric value and the threshold. Valid value if the metric value is greater than or equal to the threshold: >=. Valid value if the metric value is less than or equal to the threshold: <=. Valid value if the metric value is greater than the threshold: >. Valid value if the metric value is less than the threshold: <. Default value: >=.
Period	Integer	900	The statistical period of the metric data in the multi-metric alert rule. Unit: seconds. Valid values: 15 60 120 300 900 Note You can set this parameter to 15 seconds only for scaling groups of the ECS type.
Statistics	String	Average	The statistical method of the metric data in the multi-metric alert rule. Valid values: Average Minimum Maximum
Threshold	Float	40.0	The thresholds of the metric values in the multi-metric alert rule. If the thresholds are reached the specified number of times within the statistical period, a scaling rule is executed.
ExpressionsLogicOperator	String	&&	The alert triggering logic of the multi-metric alert rule. Valid values: `&&`: An alert is triggered only if all metrics in the multi-metric alert rule meet their trigger conditions. In this case, an alert is triggered only if the results of all trigger conditions that are specified in the multi-metric alert rule are `true`. `\|\|`: An alert is triggered only if one of the metrics in the multi-metric alert rule meets its trigger condition.
HybridMonitorNamespace	String	aliyun-test	The ID of the Hybrid Cloud Monitoring namespace. For information about how to manage Hybrid Cloud Monitoring namespaces, see Manage namespaces.
HybridMetrics	Array of HybridMetric		The Hybrid Cloud Monitoring metrics. For more information, see Create a custom target tracking scaling rule.
HybridMetric
Id	String	a	The reference ID of the metric in the metric expression.
Expression	String	(a+b)/2	The metric expression that consists of multiple Hybrid Cloud Monitoring metrics. It calculates a result used to trigger scaling events. The expression is written in Reverse Polish Notation (RPN) format and includes only the following operators: `+, -, *, /`.
MetricName	String	AliyunSmq_NumberOfMessagesVisible	The name of the Hybrid Cloud Monitoring metric.
Statistic	String	Average	The statistical method of the metric value. Valid values: Average Minimum Maximum
Dimensions	Array of Dimension		The metric dimensions. You can use this parameter to specify the monitored resources.
Dimension
DimensionKey	String	queue	The dimension key of the metric.
DimensionValue	String	testQueue	The dimension value of the metric.
PromQL	String	(avg(last_over_time(AliyunMnsnew_ActiveMessages{region='cn-hangzhou',userId='123456**',queue='testQueue'}[900s])) by (userId))/(avg(last_over_time(AliyunEss_RunningInstanceCount{instanceId='asg-bp1**'}[900s])) by (userId) != 0)	The PromQL statement of Hybrid Cloud Monitoring.

Examples

Sample requests

http(s)://ess.aliyuncs.com/?Action=DescribeAlarms
&RegionId=cn-qingdao
&ScalingGroupId=asg-bp18p2yfxow2dloq****
&AlarmTaskId=asg-bp1hvbnmkl10vll5****_f95ce797-dc2e-4bad-9618-14fee7d1****
&State=OK
&IsEnable=true
&MetricType=system
&MetricName=CpuUtilization
&PageSize=10
&PageNumber=1
&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK
Content-Type:application/xml

<DescribeAlarmsResponse>
    <PageSize>10</PageSize>
    <RequestId>871C7C53-34A4-45AA-8C14-4B72FA6A****</RequestId>
    <PageNumber>1</PageNumber>
    <TotalCount>2</TotalCount>
    <AlarmList>
        <AlarmTaskId>asg-bp1hvbnmkl10vll5****_f95ce797-dc2e-4bad-9618-14fee7d1****</AlarmTaskId>
        <MetricName>CpuUtilization</MetricName>
        <EvaluationCount>3</EvaluationCount>
        <State>ALARM</State>
        <Period>300</Period>
        <ScalingGroupId>asg-bp18p2yfxow2dloq****</ScalingGroupId>
        <ComparisonOperator>&gt;=</ComparisonOperator>
        <Effective>* * * * * ?</Effective>
        <Description>Test alarm task.</Description>
        <MetricType>system</MetricType>
        <Name>TestAlarmTask</Name>
        <Threshold>80</Threshold>
        <Enable>true</Enable>
        <Statistics>Average</Statistics>
        <Dimensions>
            <DimensionKey>device</DimensionKey>
            <DimensionValue>eth0</DimensionValue>
        </Dimensions>
        <AlarmActions>ari:acs:ess:cn-hangzhou:1406926474****:scalingrule/asr-bp163l21e07uh****</AlarmActions>
        <Expressions>
            <MetricName>CpuUtilization</MetricName>
            <ComparisonOperator>&gt;=</ComparisonOperator>
            <Period>900</Period>
            <Statistics>Average</Statistics>
            <Threshold>40</Threshold>
        </Expressions>
        <ExpressionsLogicOperator>&amp;&amp;</ExpressionsLogicOperator>
    </AlarmList>
</DescribeAlarmsResponse>

JSON format

HTTP/1.1 200 OK
Content-Type:application/json

{
  "PageSize" : 10,
  "RequestId" : "871C7C53-34A4-45AA-8C14-4B72FA6A****",
  "PageNumber" : 1,
  "TotalCount" : 2,
  "AlarmList" : [ {
    "AlarmTaskId" : "asg-bp1hvbnmkl10vll5****_f95ce797-dc2e-4bad-9618-14fee7d1****",
    "MetricName" : "CpuUtilization",
    "EvaluationCount" : 3,
    "State" : "ALARM",
    "Period" : 300,
    "ScalingGroupId" : "asg-bp18p2yfxow2dloq****",
    "ComparisonOperator" : ">=",
    "Effective" : "* * * * * ?",
    "Description" : "Test alarm task.",
    "MetricType" : "system",
    "Name" : "TestAlarmTask",
    "Threshold" : 80,
    "Enable" : true,
    "Statistics" : "Average",
    "Dimensions" : [ {
      "DimensionKey" : "device",
      "DimensionValue" : "eth0"
    } ],
    "AlarmActions" : [ "ari:acs:ess:cn-hangzhou:1406926474****:scalingrule/asr-bp163l21e07uh****" ],
    "Expressions" : [ {
      "MetricName" : "CpuUtilization",
      "ComparisonOperator" : ">=",
      "Period" : 900,
      "Statistics" : "Average",
      "Threshold" : 40
    } ],
    "ExpressionsLogicOperator" : "&&"
  } ]
}

Error codes

For a list of error codes, see Service error codes.