List of operations by function - Elastic Compute Service

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Instances

API	Title	Description
RunInstances	RunInstances	Creates pay-as-you-go or subscription Elastic Compute Service (ECS) instances.
CreateInstance	CreateInstance	Creates a subscription or pay-as-you-go Elastic Compute Service (ECS) instance.
StartInstance	StartInstance	Starts an Elastic Compute Service (ECS) instance. After the operation is called, the instance enters the Starting state.
StartInstances	StartInstances	Starts Elastic Compute Service (ECS) instances that are in the Stopped state.
StopInstance	StopInstance	Stops an Elastic Compute Service (ECS) instance in the Running state. After the operation is called, the state of the instance changes to Stopping and then to Stopped.
StopInstances	StopInstances	Stops Elastic Compute Service (ECS) instances. After the operation is called, the state of the instances changes to Stopping and then to Stopped.
RebootInstance	RebootInstance	Restarts an Elastic Compute Service (ECS) instance that is in the Running state.
RebootInstances	RebootInstances	Restarts Elastic Compute Service (ECS) instances. After this API operation is called, the ECS instances enter the Stopping state and then the Running state.
AttachInstanceRamRole	AttachInstanceRamRole	Attaches an instance Resource Access Management (RAM) role to one or more Elastic Compute Service (ECS) instances. An instance can have only a single instance RAM role. If an instance already has an instance RAM role, an error is returned when you attach another instance RAM role to the instance.
DescribeInstanceRamRole	DescribeInstanceRamRole	Queries the instance RAM roles that are attached to Elastic Compute Service (ECS) instances.
DetachInstanceRamRole	DetachInstanceRamRole	Detaches an instance RAM role from one or more ECS instances.
DescribeInstanceStatus	DescribeInstanceStatus	Queries the status information of multiple Elastic Compute Service (ECS) instances.
DescribeInstances	DescribeInstances	Queries the details of one or more Elastic Compute Service (ECS) instances.
DescribeInstanceVncUrl	DescribeInstanceVncUrl	Queries the Virtual Network Computing (VNC) logon address of an Elastic Compute Service (ECS) instance.
ModifyInstanceVncPasswd	ModifyInstanceVncPasswd	Modifies the Virtual Network Computing (VNC) password of an Elastic Compute Service (ECS) instance.
DescribeUserData	DescribeUserData	Queries the user data of an Elastic Compute Service (ECS) instance.
DescribeInstanceAutoRenewAttribute	DescribeInstanceAutoRenewAttribute	Queries the auto-renewal status of subscription Elastic Compute Service (ECS) instances.
ModifyInstanceAutoRenewAttribute	ModifyInstanceAutoRenewAttribute	Configures auto-renewal for one or more subscription instances. To reduce maintenance workloads after subscription instances expire, you can configure auto-renewal for the instances.
RenewInstance	RenewInstance	Renews a subscription Elastic Compute Service (ECS) instance.
DescribeSpotPriceHistory	DescribeSpotPriceHistory	Queries the price history of a preemptible instance within the previous 30 days.
DescribeSpotAdvice	DescribeSpotAdvice	Queries information such as the average release rate of preemptible instances and the percentage of the average preemptible instance price relative to the pay-as-you-go instance price in the last 30 days, and real-time discounts of preemptible instances in a specified region.
DescribeInstanceTypeFamilies	DescribeInstanceTypeFamilies	You can call this operation to query the instance families provided by ECS.
DescribeInstanceTypes	DescribeInstanceTypes	Queries the details of all instance types or a specific instance type provided by Elastic Compute Service (ECS).
DescribeInstanceAttribute	DescribeInstanceAttribute	Queries the details of an instance by instance ID.
ModifyInstanceAttribute	ModifyInstanceAttribute	Modifies attributes of an Elastic Compute Service (ECS) instance, such as the password, name, description, hostname, security groups, and user data. If the instance is a burstable instance, you can also change its performance mode.
ModifyInstanceMetadataOptions	ModifyInstanceMetadataOptions	Modifies the metadata of an Elastic Compute Service (ECS) instance.
ModifyInstanceAutoReleaseTime	ModifyInstanceAutoReleaseTime	Sets or cancels automatic release time for a pay-as-you-go Elastic Compute Service (ECS) instance. If you set the automatic release time for an instance, the instance is automatically released at the specified time. Proceed with caution when you perform this operation.
ModifyInstanceChargeType	ModifyInstanceChargeType	Changes the billing methods of instances between pay-as-you-go and subscription, or changes the billing method of all data disks that are attached to an instance from pay-as-you-go to subscription.
ModifyInstanceSpec	ModifyInstanceSpec	Changes the instance type and public bandwidth of a pay-as-you-go Elastic Compute Service (ECS) instance.
ModifyPrepayInstanceSpec	ModifyPrepayInstanceSpec	Upgrades or downgrades the instance type of a subscription Elastic Compute Service (ECS) instance. The new instance type takes effect for the remaining lifecycle of the instance.
ReActivateInstances	ReActivateInstances	Reactivates a pay-as-you-go Elastic Compute Service (ECS) instance that has expired or has been recycled due to overdue payments.
DeleteInstance	DeleteInstance	Releases a pay-as-you-go Elastic Compute Service (ECS) instance or an expired subscription ECS instance.
DeleteInstances	DeleteInstances	Releases pay-as-you-go instances or expired subscription instances.

Dedicated hosts

API	Title	Description
AllocateDedicatedHosts	AllocateDedicatedHosts	Creates pay-as-you-go or subscription dedicated hosts. A dedicated host is a physical server dedicated to a single tenant. You can create Elastic Compute Service (ECS) instances on a dedicated host and view the attributes of a dedicated host.
DescribeDedicatedHosts	DescribeDedicatedHosts	Queries the information about dedicated hosts, including the physical performance specifications, machine codes, and service states of the dedicated hosts, and Elastic Compute Service (ECS) instances that are created on the dedicated hosts.
DescribeDedicatedHostTypes	DescribeDedicatedHostTypes	You can call this operation to query the details about dedicated host types supported in a region, or the ECS instance families supported by a specific dedicated host type.
ModifyDedicatedHostClusterAttribute	ModifyDedicatedHostClusterAttribute	Modifies the attributes of a dedicated host cluster, such as its name and description.
ModifyDedicatedHostAttribute	ModifyDedicatedHostAttribute	Modifies some properties of a dedicated host, such as the name, description, and instance migration policy that is applied when the dedicated host fails.
ModifyDedicatedHostsChargeType	ModifyDedicatedHostsChargeType	Changes the billing method of dedicated hosts.
DescribeDedicatedHostAutoRenew	DescribeDedicatedHostAutoRenew	Queries the auto-renewal states of one or more subscription dedicated hosts.
ModifyDedicatedHostAutoRenewAttribute	ModifyDedicatedHostAutoRenewAttribute	Enables or disables auto-renewal for subscription dedicated hosts.
RenewDedicatedHosts	RenewDedicatedHosts	Renews one or more subscription dedicated hosts.
ModifyDedicatedHostAutoReleaseTime	ModifyDedicatedHostAutoReleaseTime	Sets or cancels automatic release time for a pay-as-you-go dedicated host.
ModifyInstanceDeployment	ModifyInstanceDeployment	Changes the deployment set of an Elastic Compute Service (ECS) instance or migrates an ECS instance to a dedicated host. You can change the instance type of an instance when you migrate the instance.
RedeployDedicatedHost	RedeployDedicatedHost	Migrates Elastic Compute Service (ECS) instances away from a failed dedicated host.
ReleaseDedicatedHost	ReleaseDedicatedHost	Releases a pay-as-you-go dedicated host.
CreateDedicatedHostCluster	CreateDedicatedHostCluster	You can call this operation to create a dedicated host cluster.
DescribeDedicatedHostClusters	DescribeDedicatedHostClusters	Queries the details of one or more dedicated host clusters.
DeleteDedicatedHostCluster	DeleteDedicatedHostCluster	Deletes a dedicated host cluster.

Launch templates

API	Title	Description
CreateLaunchTemplate	CreateLaunchTemplate	Creates a launch template. A launch template eliminates the need to configure a large number of parameters every time you create an Elastic Compute Service (ECS) instance.
DescribeLaunchTemplates	DescribeLaunchTemplates	Queries available launch templates.
DeleteLaunchTemplate	DeleteLaunchTemplate	Deletes a launch template.
CreateLaunchTemplateVersion	CreateLaunchTemplateVersion	Creates a version for a launch template.
DescribeLaunchTemplateVersions	DescribeLaunchTemplateVersions	Queries the versions of a launch template.
ModifyLaunchTemplateDefaultVersion	ModifyLaunchTemplateDefaultVersion	Changes the default version of a launch template. If you do not specify a version number for a launch template when you create instances by calling the RunInstances operation, the default version of the launch template is used.
DeleteLaunchTemplateVersion	DeleteLaunchTemplateVersion	Deletes the versions of a launch template. You cannot call this operation to delete the default version of a launch template. To delete the default version, you must call the DeleteLaunchTemplate operation to delete the launch template and all versions of the launch template.

Resource diagnostic

API	Title	Description
CreateDiagnosticReport	CreateDiagnosticReport	Creates a diagnostic report for a resource.
DescribeDiagnosticReports	DescribeDiagnosticReports	Queries diagnostic reports.
DescribeDiagnosticReportAttributes	DescribeDiagnosticReportAttributes	Queries the details of a diagnostic report.
DeleteDiagnosticReports	DeleteDiagnosticReports	Deletes diagnostic reports.
CreateDiagnosticMetricSet	CreateDiagnosticMetricSet	Creates a diagnostic metric set. You can group diagnostic metrics into diagnostic metric sets.
DescribeDiagnosticMetricSets	DescribeDiagnosticMetricSets	Queries diagnostic metric sets.
DescribeDiagnosticMetrics	DescribeDiagnosticMetrics	Queries diagnostic metrics.
ModifyDiagnosticMetricSet	ModifyDiagnosticMetricSet	Modifies a diagnostic metric set.
DeleteDiagnosticMetricSets	DeleteDiagnosticMetricSets	Delete diagnostic metric sets.

Elasticity assurances

API	Title	Description
CreateElasticityAssurance	CreateElasticityAssurance	Creates an elasticity assurance.
DescribeElasticityAssurances	DescribeElasticityAssurances	Queries the details of elasticity assurances.
DescribeElasticityAssuranceInstances	DescribeElasticityAssuranceInstances	Queries the running Elastic Compute Service (ECS) instances that match and use the elasticity assurance service.
CreateCapacityReservation	CreateCapacityReservation	Creates a capacity reservation.
DescribeCapacityReservations	DescribeCapacityReservations	Queries the details of capacity reservations.
DescribeCapacityReservationInstances	DescribeCapacityReservationInstances	Queries the instances that match a capacity reservation.
ModifyCapacityReservation	ModifyCapacityReservation	Modifies the information about a capacity reservation, including the name, description, release mode, and the total number of Elastic Compute Service (ECS) instances for which capacity is reserved.
DescribeInstanceAttachmentAttributes	DescribeInstanceAttachmentAttributes	Queries the information about the private pools that Elastic Compute Service (ECS) instances match.
ModifyInstanceAttachmentAttributes	ModifyInstanceAttachmentAttributes	Modifies the attributes of the private pool of an instance.
ReleaseCapacityReservation	ReleaseCapacityReservation	Releases a capacity reservation.

Auto provisioning groups

API	Title	Description
CreateAutoProvisioningGroup	CreateAutoProvisioningGroup	Creates an auto provisioning group.
DescribeAutoProvisioningGroups	DescribeAutoProvisioningGroups	Queries information of auto provisioning groups.
DescribeAutoProvisioningGroupInstances	DescribeAutoProvisioningGroupInstances	You can call this operation to query instances in an auto provisioning group.
ModifyAutoProvisioningGroup	ModifyAutoProvisioningGroup	Modifies the configurations of an auto-provisioning group.
DescribeAutoProvisioningGroupHistory	DescribeAutoProvisioningGroupHistory	Queries the scheduling tasks of an auto provisioning group.
DeleteAutoProvisioningGroup	DeleteAutoProvisioningGroup	Deletes an auto provisioning group.

Elastic Block Storage (EBS) devices

API	Title	Description
CreateDisk	CreateDisk	Creates a pay-as-you-go or subscription data disk.
DescribeDisks	DescribeDisks	Queries one or more block storage devices that you created, including cloud disks and local disks.
AttachDisk	AttachDisk	Attaches a pay-as-you-go data disk or a system disk to an Elastic Compute Service (ECS) instance. The instance and the disk must reside in the same zone.
DetachDisk	DetachDisk	Detaches a pay-as-you-go data disk or a system disk from an Elastic Compute Service (ECS) instance.
ModifyDiskAttribute	ModifyDiskAttribute	Modifies the attributes of one or more block storage devices (disks). The attributes include names, descriptions, and whether the attributes are released together with the associated instances.
ReplaceSystemDisk	ReplaceSystemDisk	Replaces the system disk or the operating system of an Elastic Compute Service (ECS) instance. After the system disk is replaced, the ID of the system disk changes and the original disk is released.
ReInitDisk	ReInitDisk	Re-initializes a disk to the state that it was in when it was created.
ResizeDisk	ResizeDisk	Resizes a system disk or data disk.
ResetDisk	ResetDisk	Rolls back a disk to a specific point in time based on a snapshot of the disk.
ModifyDiskChargeType	ModifyDiskChargeType	Changes the billing method of disks that are attached to an Elastic Compute Service (ECS) instance. The billing method of up to 16 disks that are attached to the instance can be changed by calling this operation.
ModifyDiskSpec	ModifyDiskSpec	You can call this operation to change the category of a disk or modify the performance level of an enhanced SSD (ESSD).
DeleteDisk	DeleteDisk	Releases a pay-as-you-go data disk. The data disk can be a basic disk, an ultra disk, a standard SSD, or an enhanced SSD (ESSD).

Reserved instances

API	Title	Description
PurchaseReservedInstancesOffering	PurchaseReservedInstancesOffering	Purchases a reserved instance. Reserved instances can be automatically matched to pay-as-you-go instances to offset the fees of the pay-as-you-go instances.
DescribeReservedInstances	DescribeReservedInstances	Queries purchased reserved instances.
ModifyReservedInstances	ModifyReservedInstances	Splits, merges, or modifies reserved instances. You call this operation to modify the names and zones of reserved instances or change their instance types within the same instance family.
ModifyReservedInstanceAttribute	ModifyReservedInstanceAttribute	Modifies the attributes of a reserved instance, such as its name and description.
RenewReservedInstances	RenewReservedInstances	Renews existing reserved instances.
DescribeReservedInstanceAutoRenewAttribute	DescribeReservedInstanceAutoRenewAttribute	Queries the auto-renewal status of one or more subscription reserved instances.
ModifyReservedInstanceAutoRenewAttribute	ModifyReservedInstanceAutoRenewAttribute	Enables or disables auto-renewal for one or more reserved instances.

Storage capacity units (SCUs)

API	Title	Description
PurchaseStorageCapacityUnit	PurchaseStorageCapacityUnit	Purchases one or more storage capacity units (SCUs).
DescribeStorageCapacityUnits	DescribeStorageCapacityUnits	Queries the details of one or more SCUs.
ModifyStorageCapacityUnitAttribute	ModifyStorageCapacityUnitAttribute	Changes the name or modifies the description of a storage capacity unit (SCU).

Images

API	Title	Description
CreateImage	CreateImage	Creates a custom image. After you call this operation to create a custom image, you can call the RunInstances operation to create Elastic Compute Service (ECS) instances from the created custom image or call the ReplaceSystemDisk operation to replace system disks by using the custom image.
ImportImage	ImportImage	Imports an on-premise image to Elastic Compute Service (ECS). The imported image exists as a custom image in the destination region. You can use the imported image to create ECS instances by calling the RunInstances operation or replace the system disks of ECS instances by calling the ReplaceSystemDisk operation.
ExportImage	ExportImage	Exports a custom image to an Object Storage Service (OSS) bucket in the same region.
CopyImage	CopyImage	Copies a custom image from one region to another. You can deploy or copy Elastic Compute Service (ECS) instances across regions by copying custom images.
CancelCopyImage	CancelCopyImage	Cancels an ongoing image copy task.
DescribeImages	DescribeImages	Queries available images.
ModifyImageAttribute	ModifyImageAttribute	Modifies the name, description, status, or image family of a custom image.
ModifyImageSharePermission	ModifyImageSharePermission	Manages the share permissions on a custom image. You can share your custom images to other Alibaba Cloud accounts or publish the images as community images.
DescribeImageSupportInstanceTypes	DescribeImageSupportInstanceTypes	Queries the instance types supported by an image.
DescribeImageFromFamily	DescribeImageFromFamily	You can call this operation to query available custom images that are newly created in a specific image family.
DeleteImage	DeleteImage	Deletes a custom image.

Image components

API	Title	Description
CreateImageComponent	CreateImageComponent	Creates an image component. Image components are used to store the image template commands that are commonly used to create images.
CreateImagePipeline	CreateImagePipeline	Creates an image template. Image templates can be used to create images.
DescribeImageComponents	DescribeImageComponents	Queries the details of one or more image components.
DescribeImagePipelines	DescribeImagePipelines	Queries the details of one or more image templates.
StartImagePipelineExecution	StartImagePipelineExecution	Executes a pipeline task by using an image template.
DescribeImagePipelineExecutions	DescribeImagePipelineExecutions	Queries the details of an image creation task.
CancelImagePipelineExecution	CancelImagePipelineExecution	You can call this operation to cancel an image build task.
DeleteImageComponent	DeleteImageComponent	Deletes an image component.
DeleteImagePipeline	DeleteImagePipeline	Deletes an image template.

Snapshots

API	Title	Description
CreateSnapshot	CreateSnapshot	The retention period of the snapshot. Valid values: 1 to 65536. Unit: days. The snapshot is automatically released when its retention period expires. This parameter is empty by default, which indicates that the snapshot is not automatically released.
CopySnapshot	CopySnapshot	Copies a normal snapshot from one region to another.
DescribeSnapshots	DescribeSnapshots	Queries all the snapshots of an Elastic Compute Service (ECS) instance or a disk.
DescribeSnapshotsUsage	DescribeSnapshotsUsage	Queries the number of snapshots that are stored in a region and the total size of the snapshots.
DescribeSnapshotPackage	DescribeSnapshotPackage	Queries purchased Object Storage Service (OSS) storage plans in a specified Alibaba Cloud region.
DescribeSnapshotLinks	DescribeSnapshotLinks	Queries the snapshot chains of disks. A snapshot chain is a chain of all the snapshots created for a disk. A disk corresponds to a chain of snapshots.
ModifySnapshotAttribute	ModifySnapshotAttribute	Modifies the name, description, or retention period of a snapshot.
DeleteSnapshotGroup	DeleteSnapshotGroup	Deletes a snapshot-consistent group.
DeleteSnapshot	DeleteSnapshot	Deletes a snapshot. If you call this operation to delete a snapshot that is being created, the snapshot creation task is canceled.
CreateAutoSnapshotPolicy	CreateAutoSnapshotPolicy	Creates an automatic snapshot policy in a specific region. Automatic snapshot policies allow Elastic Compute Service (ECS) to create snapshots for a disk on a regular basis to back up data. The policies can be applied to both system disks and data disks. If cross-region snapshot replication is enabled and no encryption parameters are configured, encrypted snapshots are copied to the destination region and snapshot copies are encrypted by using the default service customer master key (CMK) that was created by Key Management Service (KMS) in the destination region.
DescribeAutoSnapshotPolicyEx	DescribeAutoSnapshotPolicyEx	Queries existing automatic snapshot policies in a region.
ModifyAutoSnapshotPolicyEx	ModifyAutoSnapshotPolicyEx	Modifies an automatic snapshot policy. After an automatic snapshot policy is modified, the modifications immediately take effect on the disks that are associated with the policy. If cross-region replication for snapshots is enabled and no encryption parameters are configured, the generated encrypted snapshot copies are encrypted by using the Key Management Service (KMS) encryption keys in the region to which the snapshots are copied.
ApplyAutoSnapshotPolicy	ApplyAutoSnapshotPolicy	Applies an automatic snapshot policy to one or more disks. You can call this operation to replace the automatic snapshot policy of a disk.
CancelAutoSnapshotPolicy	CancelAutoSnapshotPolicy	Disables automatic snapshot policies for one or more disks.
DeleteAutoSnapshotPolicy	DeleteAutoSnapshotPolicy	You can call this operation to delete an automatic snapshot policy. After you delete an automatic snapshot policy, the policy will no longer be applied to the disks that it previously took effect on.
CreateSnapshotGroup	CreateSnapshotGroup	Creates a snapshot-consistent group for the cloud disks of an Elastic Compute Service (ECS) instance. A snapshot-consistent group contains snapshots of one or more cloud disks.
DescribeSnapshotGroups	DescribeSnapshotGroups	Queries the information of one or more snapshot-consistent groups.
ModifySnapshotGroup	ModifySnapshotGroup	Modifies the name and description of a snapshot-consistent group.

PrefixList

API	Title	Description
CreatePrefixList	CreatePrefixList	Creates a prefix list.
DescribePrefixLists	DescribePrefixLists	Queries the information of one or more prefix lists.
DescribePrefixListAssociations	DescribePrefixListAssociations	Queries the information of resources that are associated with a specific prefix list.
DescribePrefixListAttributes	DescribePrefixListAttributes	Queries the details of a prefix list, including the name, address family, maximum number of entries, and details of the entries.
ModifyPrefixList	ModifyPrefixList	Modifies the name, description, or entries of a specific prefix list.
DeletePrefixList	DeletePrefixList	Deletes a prefix list and all entries in the prefix list.

Security groups

API	Title	Description
CreateSecurityGroup	CreateSecurityGroup	Creates a security group. By default, a security group allows only instances in the security group to access each other. Access requests from outside the security group are denied. If you want to allow requests over the Internet or from instances in other security groups, you can call the AuthorizeSecurityGroup operation.
DescribeSecurityGroups	DescribeSecurityGroups	Queries the basic information about security groups.
DescribeSecurityGroupAttribute	DescribeSecurityGroupAttribute	Queries the rules of a security group.
ModifySecurityGroupPolicy	ModifySecurityGroupPolicy	Modifies the internal access control policy of a basic security group. The internal access control policies of advanced security groups cannot be modified.
ModifySecurityGroupAttribute	ModifySecurityGroupAttribute	Modifies the name or description of a security group.
ModifySecurityGroupRule	ModifySecurityGroupRule	Modifies an inbound rule in a security group.
ModifySecurityGroupEgressRule	ModifySecurityGroupEgressRule	Modifies the description of a security group rule. You can call this operation to modify only the description of a security group rule. If you want to modify other information, such as the policy, port range, and authorization object of the rule, log on to the Elastic Compute Service (ECS) console.
AuthorizeSecurityGroup	AuthorizeSecurityGroup	Creates inbound rules in a security group. You can use the created rules to allow or deny inbound traffic from other hosts to instances in the security group.
AuthorizeSecurityGroupEgress	AuthorizeSecurityGroupEgress	Creates outbound rules in a security group. You can use the created rules to allow or deny outbound traffic from instances in the security group to other objects.
JoinSecurityGroup	JoinSecurityGroup	Adds an Elastic Compute Service (ECS) instance or an elastic network interface (ENI) to a security group.
LeaveSecurityGroup	LeaveSecurityGroup	Removes an Elastic Compute Service (ECS) instance or an elastic network interface (ENI) from a security group.
DescribeSecurityGroupReferences	DescribeSecurityGroupReferences	Checks whether a security group is referenced by the rules of other security groups.
RevokeSecurityGroup	RevokeSecurityGroup	Deletes one or more inbound security group rules.
RevokeSecurityGroupEgress	RevokeSecurityGroupEgress	Deletes outbound security group rules.
DeleteSecurityGroup	DeleteSecurityGroup	Deletes a security group.

Deployment sets

API	Title	Description
CreateDeploymentSet	CreateDeploymentSet	Creates a deployment set in a specific region.
DescribeDeploymentSetSupportedInstanceTypeFamily	DescribeDeploymentSetSupportedInstanceTypeFamily	Queries the instance families that support deployment sets.
DescribeDeploymentSets	DescribeDeploymentSets	Queries the attributes of one or more deployment sets.
ModifyDeploymentSetAttribute	ModifyDeploymentSetAttribute	You can call this operation to modify the name and description of a deployment set.
DeleteDeploymentSet	DeleteDeploymentSet	You can call this operation to delete a deployment set.

SSH key pairs

API	Title	Description
CreateKeyPair	CreateKeyPair	Creates an SSH key pair. The system stores the public key and returns the unencrypted private key. The private key is encoded with PEM in the PKCS#8 format. You are responsible for storing the private key and ensuring its confidentiality.
ImportKeyPair	ImportKeyPair	Imports the public key of a Rivest-Shamir-Adleman (RSA)-encrypted key pair that is generated by a third-party tool. After the public key of the key pair is imported, Alibaba Cloud stores the public key. You are responsible for storing the private key. We recommend that you store it in a safe place.
DescribeKeyPairs	DescribeKeyPairs	Queries one or more key pairs.
AttachKeyPair	AttachKeyPair	Binds an SSH key pair to one or more Linux instances.
DetachKeyPair	DetachKeyPair	Unbinds an SSH key pair from one or more Linux instances.
DeleteKeyPairs	DeleteKeyPairs	Deletes one or more SSH key pairs.

Networks

API	Title	Description
ModifyInstanceVpcAttribute	ModifyInstanceVpcAttribute	Changes the virtual private cloud (VPC), private IP address, or vSwitch of an Elastic Compute Service (ECS) instance that resides in a VPC.
AllocatePublicIpAddress	AllocatePublicIpAddress	Assigns a public IP address to an Elastic Compute Service (ECS) instance.
ConvertNatPublicIpToEip	ConvertNatPublicIpToEip	Converts the public IP address of an Elastic Compute Service (ECS) instance located in a virtual private cloud (VPC) into an elastic IP address (EIP).
AttachClassicLinkVpc	AttachClassicLinkVpc	Links an instance that is deployed in the classic network to a virtual private cloud (VPC) by establishing a ClassicLink connection between the instance and the VPC. This way, the instance can communicate with cloud resources in the VPC over the internal network.
DetachClassicLinkVpc	DetachClassicLinkVpc	You can call this operation to unlink a classic network-type instance from a virtual private cloud (VPC) by removing the ClassicLink connection between them. After the instance is unlinked from the VPC, it can no longer communicate with instances in the VPC.
DescribeBandwidthLimitation	DescribeBandwidthLimitation	Queries the maximum public bandwidth that can be purchased, upgraded, or downgraded for various Elastic Compute Service (ECS) instance types.
DescribeClassicLinkInstances	DescribeClassicLinkInstances	Queries Elastic Compute Service (ECS) instances that reside in the classic network and have established ClassicLink connections with virtual private clouds (VPCs).
ModifyInstanceNetworkSpec	ModifyInstanceNetworkSpec	Modifies the bandwidth configurations of an Elastic Compute Service (ECS) instance. You can modify the bandwidth configurations of an instance to improve network performance.

Elastic network interfaces (ENIs)

API	Title	Description
CreateNetworkInterface	CreateNetworkInterface	Creates an elastic network interface (ENI).
AttachNetworkInterface	AttachNetworkInterface	Attaches an elastic network interface (ENI) to an Elastic Compute Service (ECS) instance that resides in a virtual private cloud (VPC).
DetachNetworkInterface	DetachNetworkInterface	Detach an elastic network interface (ENI) from an Elastic Compute Service (ECS) instance.
DescribeNetworkInterfaces	DescribeNetworkInterfaces	Queries the details of one or more elastic network interfaces (ENIs).
DescribeNetworkInterfaceAttribute	DescribeNetworkInterfaceAttribute	Queries the details of an elastic network interface (ENI).
ModifyNetworkInterfaceAttribute	ModifyNetworkInterfaceAttribute	Modifies the attributes, such as the name, description, and security group of an elastic network interface (ENI).
AssignPrivateIpAddresses	AssignPrivateIpAddresses	Assigns one or more secondary private IP addresses to an elastic network interface (ENI). You can specify available private IP addresses within the CIDR block of the vSwitch that hosts the ENI. Alternatively, you can specify the number of private IP addresses for Elastic Compute Service (ECS) to automatically assign them.
UnassignPrivateIpAddresses	UnassignPrivateIpAddresses	Unassigns one or more secondary private IP addresses from an elastic network interface (ENI).
AssignIpv6Addresses	AssignIpv6Addresses	Assigns one or more IPv6 addresses to an elastic network interface (ENI).
UnassignIpv6Addresses	UnassignIpv6Addresses	Unassign one or more IPv6 addresses from an elastic network interface (ENI).
DeleteNetworkInterface	DeleteNetworkInterface	Deletes an elastic network interface (ENI).

System events

API	Title	Description
DescribeInstancesFullStatus	DescribeInstancesFullStatus	Queries the full status information of Elastic Compute Service (ECS) instances. The full status information includes instance states and system event states. The instance states are the lifecycle states of instances. The system event states are the health states of maintenance events that occur on ECS instances.
DescribeDisksFullStatus	DescribeDisksFullStatus	Queries the full status information about one or more Elastic Block Storage (EBS) devices.
DescribeInstanceHistoryEvents	DescribeInstanceHistoryEvents	Queries historical system events that are inactive.
CreateSimulatedSystemEvents	CreateSimulatedSystemEvents	Schedules simulated system events for one or more Elastic Compute Service (ECS) instances. The simulated system events do not actually occur on or affect ECS instances.
CancelSimulatedSystemEvents	CancelSimulatedSystemEvents	Cancels simulated system events that are in the Scheduled or Executing state. After you cancel a simulated system event, the simulated event enters the Canceled state.
AcceptInquiredSystemEvent	AcceptInquiredSystemEvent	Accepts the default operation for a system event in the Inquiring state and authorizes the system to perform the default operation.

OM and monitoring

API	Title	Description
GetInstanceScreenshot	GetInstanceScreenshot	Obtains the screenshots of an Elastic Compute Service (ECS) instance.
GetInstanceConsoleOutput	GetInstanceConsoleOutput	Queries the command output of an Elastic Compute Service (ECS) instance. The returned command output is encoded in Base64.
DescribeDiskMonitorData	DescribeDiskMonitorData	Queries the monitoring data of a disk in a specific period of time.
DescribeInstanceMonitorData	DescribeInstanceMonitorData	Queries the monitoring data of an Elastic Compute Service (ECS) instance. The monitoring data can include the vCPU utilization, CPU credits of the burstable instance, amount of received data traffic, amount of sent data traffic, and average bandwidth.
DescribeEniMonitorData	DescribeEniMonitorData	Queries the monitoring data of a secondary elastic network interface (ENI) over a specific period of time.
DescribeSnapshotMonitorData	DescribeSnapshotMonitorData	Queries the monitoring data of snapshot sizes in a region over the last 30 days.
DescribeInstanceMaintenanceAttributes	DescribeInstanceMaintenanceAttributes	Queries the maintenance attributes of an instance.
ModifyInstanceMaintenanceAttributes	ModifyInstanceMaintenanceAttributes	Modifies the maintenance attributes of an instance.
RedeployInstance	RedeployInstance	Redeploys an Elastic Compute Service (ECS) instance when you receive an event notification for the instance.
ReportInstancesStatus	ReportInstancesStatus	Reports the same exception on multiple Elastic Compute Service (ECS) instances or on multiple disks of an ECS instance.

Cloud Assistant

API	Title	Description
RunCommand	RunCommand	Runs a shell, PowerShell, or batch command on Elastic Compute Service (ECS) instances.
CreateCommand	CreateCommand	Creates a Cloud Assistant command.
InvokeCommand	InvokeCommand	Triggers a Cloud Assistant command on one or more Elastic Compute Service (ECS) instances.
DescribeInvocations	DescribeInvocations	Queries the execution list and states of Cloud Assistant commands.
DescribeInvocationResults	DescribeInvocationResults	Queries the execution results of one or more Cloud Assistant commands on Elastic Compute Service (ECS) instances.
ModifyInvocationAttribute	ModifyInvocationAttribute	Modifies the execution information of a Cloud Assistant command that is run on schedule.
StopInvocation	StopInvocation	Stops the process of a Cloud Assistant command that is running on one or more Elastic Compute Service (ECS) instances.
DescribeCommands	DescribeCommands	Queries the Cloud Assistant commands that you created or the common Cloud Assistant commands that Alibaba Cloud provides.
ModifyCommand	ModifyCommand	Modifies the parameters and content of a Cloud Assistant command.
DeleteCommand	DeleteCommand	Deletes a Cloud Assistant command.
SendFile	SendFile	Sends a file to one or more Elastic Compute Service (ECS) instances.
DescribeSendFileResults	DescribeSendFileResults	Queries the files sent by Cloud Assistant and their status.
DescribeCloudAssistantStatus	DescribeCloudAssistantStatus	Queries whether Cloud Assistant Agent is installed on Elastic Compute Service (ECS) instances. If Cloud Assistant Agent is installed, the system queries the total number of Cloud Assistant commands that have been run, the number of Cloud Assistant commands that are being run, and the time when Cloud Assistant commands were last run.
InstallCloudAssistant	InstallCloudAssistant	Installs the Cloud Assistant client on one or more Elastic Compute Service (ECS) instances. After the Cloud Assistant client is installed on ECS instances, you must restart the instances for the Cloud Assistant client to take effect.
StartTerminalSession	StartTerminalSession	Creates a session by using the session management feature. When you call this operation, you can include the ID of an Elastic Compute Service (ECS) instance in the request to create a WebSocket session for the instance. The URL of the WebSocket session returned by the operation can be used to connect to the instance.
DescribeTerminalSessions	DescribeTerminalSessions	Queries the session records of Elastic Compute Service (ECS) Session Manager.
ModifyCloudAssistantSettings	ModifyCloudAssistantSettings	Modifies the configurations of a Cloud Assistant feature.
DescribeCloudAssistantSettings	DescribeCloudAssistantSettings	Queries the configurations of Cloud Assistant features.
CreateActivation	CreateActivation	Creates an activation code. The activation code is used to register servers that are not provided by Alibaba Cloud as Alibaba Cloud managed instances.
DescribeActivations	DescribeActivations	Queries existing activation codes and their usage information.
DisableActivation	DisableActivation	Disables an activation code.
DeleteActivation	DeleteActivation	Deletes an unused activation code.
DescribeManagedInstances	DescribeManagedInstances	Queries a list of managed instances.
ModifyManagedInstance	ModifyManagedInstance	Modifies the information about a managed instance.
DeregisterManagedInstance	DeregisterManagedInstance	Deregisters a managed instance. After you deregister the managed instance, you can no longer use Cloud Assistant to send commands or files to the instance.
ListPluginStatus	ListPluginStatus	Queries the states of Cloud Assistant plug-ins on Elastic Compute Service (ECS) instances.

HPC clusters

API	Title	Description
CreateHpcCluster	CreateHpcCluster	Creates a high performance computing (HPC) cluster.
DescribeHpcClusters	DescribeHpcClusters	Queries available high performance computing (HPC) clusters. You can specify multiple request parameters to be queried. Specified parameters have logical AND relations and are included in the filter conditions. The request parameters are not dependent on each other.
ModifyHpcClusterAttribute	ModifyHpcClusterAttribute	You can call this operation to modify the description of an Alibaba Cloud HPC (HPC) cluster.
DeleteHpcCluster	DeleteHpcCluster	You can call this operation to delete an HPC cluster.

Tags and ResourceGroup

API	Title	Description
TagResources	TagResources	Creates and adds tags to specified Elastic Compute Service (ECS) resources.
ListTagResources	ListTagResources	Queries the tags that are added to one or more Elastic Compute Service (ECS) resources.
UntagResources	UntagResources
JoinResourceGroup	JoinResourceGroup	Adds an Elastic Compute Service (ECS) resource or service to a resource group.

Regions

API	Title	Description
DescribeRegions	DescribeRegions	Queries available Alibaba Cloud regions.
DescribeZones	DescribeZones	Queries the zones in a specific region.
DescribeAvailableResource	DescribeAvailableResource	Queries the availability of resources in a zone. You can call this operation before you create or modify instances to ensure that sufficient resources are available.
DescribeAccountAttributes	DescribeAccountAttributes	Queries the quotas of Elastic Compute Service (ECS) resources that you can create in an Alibaba Cloud region. For a specific region, you can query the maximum numbers of security groups, elastic network interfaces (ENIs), vCPUs for pay-as-you-go instances, vCPUs for preemptible instances, the capacity quotas for pay-as-you-go disks that you can create and the number of dedicated hosts that you can create. You can also query information such as network types or whether an account has completed real-name verification.
DescribeResourcesModification	DescribeResourcesModification	Queries available resources within a specific zone when you upgrade or downgrade instance types or replace system disks.

Inquiry

API	Title	Description
DescribePrice	DescribePrice	Queries the most recent prices of Elastic Compute Resource (ECS) resources.
DescribeRenewalPrice	DescribeRenewalPrice	Queries the renewal price of a subscription Elastic Compute Service (ECS) resource. Only the renewal prices of subscription resources can be queried.
DescribeInstanceModificationPrice	DescribeInstanceModificationPrice	Queries the pricing information about newly attached subscription data disks or about the new instance types when you upgrade the configurations of unexpired subscription Elastic Compute Service (ECS) instances.

Tasks

API	Title	Description
DescribeTasks	DescribeTasks	Queries the progress of one or more asynchronous requests.
DescribeTaskAttribute	DescribeTaskAttribute	You can call this operation to query the details of an asynchronous task. You can query the asynchronous tasks including importing images, exporting images, and modifying disk categories. The asynchronous tasks are generated by the ImportImage, ExportImage, and ModifyDiskSpec operations.
CancelTask	CancelTask	Cancels a running task. You can cancel the running tasks generated by the ImportImage or ExportImage operation.