Use DescribeInvocations to query the execution list and states of Cloud Assistant commands - Elastic Compute Service - Alibaba Cloud - Elastic Compute Service

Queries the execution list and status of Cloud Assistant commands.

Operation description

After you run a command, it does not necessarily run successfully or produce the expected results. You must check the actual execution results based on the return values of this operation.
You can query execution information from the last 30 days. A maximum of 10,000 execution records are retained.
You can subscribe to Cloud Assistant task status events to obtain task results through events, which avoids frequent polling and improves efficiency.
When paged query the first page of results, set only MaxResults to limit the number of entries returned. The NextToken value in the response serves as the token for querying subsequent pages. When paged query subsequent pages, set NextToken to the value obtained from the previous response and set MaxResults to limit the number of entries returned.
Differences between DescribeInvocations and DescribeInvocationResults:
- When a single RunCommand/InvokeCommand call specifies multiple instances:
  - DescribeInvocations returns the execution status on each instance and the aggregated status across multiple instances.
  - DescribeInvocationResults returns only the individual execution status on each instance, without the aggregated status across multiple instances.
- When a single RunCommand/InvokeCommand call specifies one instance:
  - DescribeInvocations and DescribeInvocationResults are largely interchangeable.
- When you want to view the execution history of scheduled (periodic) tasks or tasks that run automatically at instance startup (RepeatMode=Period, EveryReboot), only DescribeInvocationResults can return historical execution records (you must specify IncludeHistory=true). DescribeInvocations returns only the latest task status.
- When you want to view the command content and parameters, only DescribeInvocations returns CommandContent.

Try it now

Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ecs:DescribeInvocations

get

Instance

acs:ecs:{#regionId}:{#accountId}:instance/{#instanceId}

Command

acs:ecs:{#regionId}:{#accountId}:command/{#commandId}

None

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID. You can call DescribeRegions to query the most recent region list.	cn-hangzhou
ResourceGroupId	string	No	The resource group ID for command execution. After you specify this parameter, you must also specify ResourceGroupId when running the command. This parameter filters the corresponding command execution results.	rg-bp67acfmxazb4p****
RegionId	string	Yes	地域 ID。您可以调用 DescribeRegions 查看最新的阿里云地域列表。	cn-hangzhou
InvokeId	string	No	The command execution ID.	t-hz0jdfwd9f****
CommandId	string	No	The command ID. You can call DescribeCommands to query all available command IDs.	c-hz0jdfwcsr****
CommandName	string	No	The command name. This parameter does not take effect if you also specify `InstanceId`.	CommandTestName
CommandType	string	No	The command type. Valid values: RunBatScript: Bat script that runs on Windows instances. RunPowerShellScript: PowerShell script that runs on Windows instances. RunShellScript: Shell script that runs on Linux instances.	RunShellScript
Timed	boolean	No	Specifies whether the command will be automatically run in the future. Valid values: true: Queries commands for which the `RepeatMode` parameter is set to `Period`, `NextRebootOnly`, or `EveryReboot` when `RunCommand` or `InvokeCommand` is called. false: Queries commands in the following two states: Commands for which the `RepeatMode` parameter is set to `Once` when `RunCommand` or `InvokeCommand` is called. Commands that have been canceled, stopped, or completed. Default value: false.	true
InvokeStatus	string	No	The overall execution status of the command. The overall execution status depends on the common execution status across one or more instances in the execution. Valid values: Running: Scheduled execution: The execution status remains Running until you manually stop the scheduled command. One-time execution: The overall execution status is Running as long as the command process is running on any instance. Finished: Scheduled execution: The command process never reaches the Finished state. One-time execution: All instances have completed execution, or the command process on some instances was manually stopped while the remaining instances completed execution. Success: The command execution status on each instance is Stopped or Success, and the command execution status on at least one instance is Success. Immediate task: The command execution is complete and the exit code is 0. Scheduled task: The last execution was successful with an exit code of 0, and all specified execution times have elapsed. Failed: Scheduled execution: The command process never reaches the Failed state. One-time execution: All instances failed to run the command. Stopped: The command was stopped. Stopping: The command is being stopped. PartialFailed: The command partially failed. This value does not take effect if you also specify `InstanceId`. Pending: The system is verifying or sending the command. The overall execution status is Pending if the command execution status on at least one instance is Pending. Scheduled: The scheduled command has been sent and is waiting to run. The overall execution status is Scheduled if the command execution status on at least one instance is Scheduled.	Finished
InstanceId	string	No	The instance ID. If you specify this parameter, all command execution records for the instance are queried.	i-bp1i7gg30r52z2em****
ContentEncoding	string	No	The encoding mode of the `CommandContent` and `Output` fields in the response. Valid values: PlainText: Returns the original command content and output. Base64: Returns the Base64-encoded command content and output. Default value: Base64.	PlainText
IncludeOutput	boolean	No	Specifies whether to return the command output in the results. true: The command output is returned. You must specify at least `InvokeId` or `InstanceId`. false: The command output is not returned. Default value: false.	false
PageNumber	integer	No	Note This parameter is about to be deprecated. Use NextToken and MaxResults to perform paging queries.	1
PageSize	integer	No	Note This parameter is about to be deprecated. Use NextToken and MaxResults to perform paging queries.	10
MaxResults	integer	No	The maximum number of entries per page for a paged query. Maximum value: 50. Default value: 10.	10
NextToken	string	No	The pagination token. Set this parameter to the NextToken value returned in the previous API call.	AAAAAdDWBF2
RepeatMode	string	No	The execution mode of the command. This parameter does not take effect if you also specify `InstanceId`. Valid values: Once: The command is immediately run. Period: The command is run on a schedule. NextRebootOnly: The command is automatically run the next time the instance starts. EveryReboot: The command is automatically run every time the instance starts. Default value: empty, which indicates that all execution modes are queried.	Once
Tag	array<object>	No	The tags.
	object	No	The tags.
Value	string	No	The tag value of the command execution. Valid values of N: 1 to 20. The tag value can be an empty string. The tag value can be up to 128 characters in length and cannot contain `http://` or `https://`.	TestValue
Key	string	No	The tag key of the command execution. Valid values of N: 1 to 20. The tag key cannot be an empty string. If you use a single tag to filter resources, the number of resources with the specified tag cannot exceed 1,000. If you use multiple tags to filter resources, the number of resources with all specified tags attached cannot exceed 1,000. If the resource count exceeds 1,000, call ListTagResources to execute the query. The tag key can be up to 64 characters in length and cannot start with `aliyun` or `acs:`, or contain `http://` or `https://`.	TestKey

Response elements

Element	Type	Description	Example
	object
PageSize	integer	The number of entries per page.	10
RequestId	string	The request ID.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3****
PageNumber	integer	The page number of the query results.	1
TotalCount	integer	The total number of commands.	1
NextToken	string	The pagination token returned in this call.	AAAAAdDWBF2
Invocations	object
Invocation	array<object>	The command execution records.
	array<object>	The time when the task was created.
OssOutputDelivery	string	OSS delivery configuration for command execution output.	oss://testBucket/testPrefix
InvocationStatus	string	The overall execution status of the command. This overall status is determined by the combined execution statuses of all instances involved in this invocation. Possible values are as follows: Pending: The system is validating or sending the command. If at least one instance has a command execution status of Pending, the overall status is Pending. Scheduled: The scheduled command has been sent and is waiting to run. If at least one instance has a command execution status of Scheduled, the overall status is Scheduled. Running: The command is running on an instance. If at least one instance has a command execution status of Running, the overall status is Running. Success: All instances have a command execution status of either Stopped or Success, and at least one instance has a status of Success. In this case, the overall status is Success. For immediately executed jobs: The command completed successfully with an exit code of 0. For scheduled jobs: The most recent execution succeeded with an exit code of 0, and all specified scheduled times have been completed. Failed: All instances have a command execution status of either Stopped or Failed. The overall status is Failed if any instance has one or more of the following statuses: Command validation failed (Invalid). Failed to send the command (Aborted). Command execution completed but with a non-zero exit code (Failed). Command execution timed out (Timeout). Command execution encountered an error (Error). Stopping: The job is being stopped. If at least one instance has a command execution status of Stopping, the overall status is Stopping. Stopped: The job has been stopped. If all instances have a command execution status of Stopped, the overall status is Stopped. The following instance statuses result in a Stopped overall status: The job was canceled (Cancelled). The job was terminated (Terminated). PartialFailed: Some instances succeeded while others failed. If all instances have a command execution status of Success, Failed, or Stopped, and there is a mix of success and failure, the overall status is PartialFailed. Note The `InvokeStatus` parameter in the response has a similar meaning to this parameter, but we recommend that you refer to this return value.	Running
Parameters	string	Custom parameters in the command.	{}
Timed	boolean	Indicates whether the queried command will be automatically executed in the future.	false
CommandDescription	string	Command description.	testDescription
Timeout	integer	The maximum timeout duration, in seconds, for the command you created when it is executed on an ECS instance. A timeout occurs when the command you created cannot be run for any reason. After the timeout, the command process is forcibly stopped, meaning the command's PID is canceled.	60
InvokeInstances	object
InvokeInstance	array<object>	The type of the target instance set for execution.
	object	The list of execution statuses.
Dropped	integer	The length of text truncated and discarded from the Output field when it exceeds 24 KB.	0
InvocationStatus	string	The command execution status on a single instance. Possible values: Pending: The system is validating or sending the command. Invalid: The specified command type or parameter is incorrect. Aborted: Failed to send the command to the instance. The instance must be running, and the command must be sent successfully within 1 minute. Running: The command is running on the instance. Success: For one-time execution commands: The command has completed with an exit code of 0. For scheduled commands: The last run succeeded with an exit code of 0, and the scheduled time period has ended. Failed: For one-time execution commands: The command has completed with a non-zero exit code. For scheduled commands: The last run completed with a non-zero exit code, and the scheduled time period will be aborted. Error: An abnormal condition occurred during command execution, preventing further progress. Timeout: Command execution timed out. Cancelled: The command execution action was canceled before it started. Stopping: The job is being stopped. Terminated: The command was terminated during runtime. Scheduled: For one-time execution commands: Not applicable; this status will not appear. For scheduled commands: Waiting to run.	Success
InstanceId	string	Instance ID.	i-bp1i7gg30r52z2em****
Timed	boolean	Indicates whether the queried command will be automatically executed in the future.	false
InstanceInvokeStatus	string	The command execution progress status on a single instance. Note We do not recommend that you view this return value. We recommend that you view the return value of `InvocationStatus`.	Finished
ExitCode	integer	The exit code of the command process. Possible values: For Linux instances, this is the exit code of the Shell process. For Windows instances, this is the exit code of the Bat or PowerShell process.	0
ErrorInfo	string	Details about why the command failed to be sent or executed. Possible values: empty: The command ran normally. The security group rules denied access to the aliyun service: The security group rule denied access to the Cloud Assistant service. The specified instance does not exist: The specified instance does not exist or has been released. The specified instance was released during task execution: The instance was released while the command was being executed. The specified instance was not running during task execution: The instance was not in the running state when command execution started. The OS type of the instance does not support the specified command type: The command is not applicable to the specified instance. The specified account does not exist: The specified Account does not exist. The specified directory does not exist: The specified folder does not exist. The cron expression is invalid: The specified running time expression is invalid. The aliyun service is not running on the instance: The Cloud Assistant Agent is not running. The aliyun service in the instance does not response: The Cloud Assistant Agent is unresponsive. The aliyun service in the instance is upgrading during task execution: The Cloud Assistant Agent is upgrading. The aliyun service in the instance need to be upgraded to at least version to support the feature: The Cloud Assistant Agent needs to be upgraded. is the minimum version number that supports the feature, and is the specific attribute. The command delivery has been timeout: Sending the command timed out. The command execution has been timeout: Command execution timed out. The command execution got an exception: An exception occurred during command execution. The command execution exit code is not zero: Command execution ended with a non-zero exit code. The specified instance was released during task execution: The instance was released while the file was being sent.	the specified instance does not exists
StartTime	string	The time when the command started executing on the instance.	2019-12-20T06:15:55Z
Repeats	integer	The number of times the command was executed on this instance. If the execution mode is one-time execution, the value is 0 or 1. If the execution mode is scheduled execution, the value indicates how many times the command has been executed.	0
OssOutputUri	string	The URI of the file in OSS to which the command Outputs are delivered. This field is an empty string if delivery is in progress or has failed.	oss://testBucket/testPrefix/output.txt
OssOutputStatus	string	The delivery status of the command Outputs. Valid values: InProgress: Delivery is in progress. Finished: Delivery is complete. Failed: Delivery failed.	Finished
OssOutputErrorCode	string	The error code returned when delivery fails. This value is returned only when OssOutputStatus is Failed. Valid values: CloudAssistant.UnsupportedInvocationStatus: The job status does not support delivery. CloudAssistant.ClientNeedUpgrade: The Cloud Assistant version does not support delivery. For Linux instances, the Cloud Assistant version must be later than 2.2.4.1007. For Windows instances, the Cloud Assistant version must be later than 2.1.4.1007. OSS.AccessDenied: The user does not have access permissions to the specified bucket. OSS.NoSuchBucket: The specified bucket does not exist. OSS.FileImmutable: The data in the bucket is in a protection status. OSS.InvalidObjectName: The object name is invalid. This includes cases where no object name is specified, the object name exceeds the length limit, or the specified object name is invalid.	CloudAssistant.UnsupportedInvocationStatus
OssOutputErrorInfo	string	Error Details when delivery fails. Returned only when OssOutputStatus is Failed.	The invocation status does not support output delivery.
FinishTime	string	The end time of the command process.	2019-12-20T06:15:56Z
Output	string	The output information of the command. If ContentEncoding is specified as PlainText, the original output information is returned. If ContentEncoding is specified as Base64, the Base64-encoded output information is returned.	OutPutTestmsg
CreationTime	string	The start time of command execution.	2019-12-20T06:15:54Z
UpdateTime	string	The update time of the command status.	2020-01-19T09:15:47Z
ErrorCode	string	The error code indicating why the command failed to be delivered or executed. Possible values: empty: The command ran normally. InstanceNotExists: The specified instance does not exist or has been released. InstanceReleased: The instance was released during command execution. InstanceNotRunning: The instance was not running when command execution started. CommandNotApplicable: The command is not applicable to the specified instance. AccountNotExists: The username specified for command execution does not exist. DirectoryNotExists: The specified folder does not exist. BadCronExpression: The specified execution time expression is invalid. ClientNotRunning: The Cloud Assistant Agent is not running. ClientNotResponse: The Cloud Assistant Agent did not respond. ClientIsUpgrading: The Cloud Assistant Agent is being upgraded. ClientNeedUpgrade: The Cloud Assistant Agent needs to be upgraded. DeliveryTimeout: Command delivery timed out. ExecutionTimeout: Command execution timed out. ExecutionException: An exception occurred during command execution. ExecutionInterrupted: The command execution job was interrupted. ExitCodeNonzero: Command execution finished with a non-zero exit code. SecurityGroupRuleDenied: The security group rule denied access to the Cloud Assistant service. TaskConcurrencyLimit: The number of concurrently executed jobs exceeded the maximum limit.	InstanceNotExists
StopTime	string	If `StopInvocation` was invoked to stop command execution, this indicates the time when the invocation occurred.	2020-01-19T09:15:47Z
CommandContent	string	Command content. If ContentEncoding is specified as PlainText, the original script content is returned. If ContentEncoding is specified as Base64, the Base64-encoded script content is returned.	cnBtIC1xYSB8IGdyZXAgdnNm****
WorkingDir	string	The path where the command is executed.	/home/
RepeatMode	string	The mode in which the command is executed. Possible values: Once: Execute the command immediately. Period: Execute the command on a schedule. NextRebootOnly: Automatically execute the command the next time the instance starts. EveryReboot: Automatically execute the command every time the instance starts. DryRun: Perform a dry run of this request. The command will not actually be executed. Checks include request parameters, the instance execution environment, and the Cloud Assistant Agent status.	Once
InvokeStatus	string	The overall execution status of the command. Note We do not recommend checking this return value. We recommend that you check the return value of `InvocationStatus` instead.	Finished
CommandType	string	The command type.	RunShellScript
Username	string	The username used to execute the command on the ECS instance.	test
ContainerId	string	The container ID.	ab141ddfbacfe02d9dbc25966ed971536124527097398d419a6746873fea****
ContainerName	string	The container name.	test-container
CreationTime	string	The Creation Time of the Job.	2020-01-19T09:15:46Z
Frequency	string	The running time of the scheduled command.	0 /20 * * *
Launcher	string	The launcher for script execution. The length cannot exceed 1 KB.	python3 -u {{ACS::ScriptFileName\|Ext(".py")}}
CommandId	string	The command ID.	c-hz0jdfwcsr****
CommandName	string	The command Name.	CommandTestName
InvokeId	string	The command execution ID.	t-hz0jdfwd9f****
TerminationMode	string	The mode used when stopping a Job (either manually or due to a timeout interruption). Possible values: Process: Stops the current script process. ProcessTree: Stops the entire process tree (the script process and the collection of all child processes it created).	ProcessTree
Tags	object
Tag	array<object>	The tag information of the command execution.
	object	The tag information of the command execution.
TagKey	string	The tag key of the command execution.	owner
TagValue	string	The tag value of the command execution.	zhangsan

Examples

Success response

JSON format

{
  "PageSize": 10,
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****",
  "PageNumber": 1,
  "TotalCount": 1,
  "NextToken": "AAAAAdDWBF2",
  "Invocations": {
    "Invocation": [
      {
        "OssOutputDelivery": "oss://testBucket/testPrefix",
        "InvocationStatus": "Running",
        "Parameters": "{}",
        "Timed": false,
        "CommandDescription": "testDescription",
        "Timeout": 60,
        "InvokeInstances": {
          "InvokeInstance": [
            {
              "Dropped": 0,
              "InvocationStatus": "Success",
              "InstanceId": "i-bp1i7gg30r52z2em****",
              "Timed": false,
              "InstanceInvokeStatus": "Finished",
              "ExitCode": 0,
              "ErrorInfo": "the specified instance does not exists",
              "StartTime": "2019-12-20T06:15:55Z",
              "Repeats": 0,
              "OssOutputUri": "oss://testBucket/testPrefix/output.txt",
              "OssOutputStatus": "Finished",
              "OssOutputErrorCode": "CloudAssistant.UnsupportedInvocationStatus",
              "OssOutputErrorInfo": "The invocation status does not support output delivery.",
              "FinishTime": "2019-12-20T06:15:56Z",
              "Output": "OutPutTestmsg",
              "CreationTime": "2019-12-20T06:15:54Z",
              "UpdateTime": "2020-01-19T09:15:47Z",
              "ErrorCode": "InstanceNotExists",
              "StopTime": "2020-01-19T09:15:47Z"
            }
          ]
        },
        "CommandContent": "cnBtIC1xYSB8IGdyZXAgdnNm****",
        "WorkingDir": "/home/",
        "RepeatMode": "Once",
        "InvokeStatus": "Finished",
        "CommandType": "RunShellScript",
        "Username": "test",
        "ContainerId": "ab141ddfbacfe02d9dbc25966ed971536124527097398d419a6746873fea****",
        "ContainerName": "test-container",
        "CreationTime": "2020-01-19T09:15:46Z",
        "Frequency": "0 */20 * * * *",
        "Launcher": "python3 -u {{ACS::ScriptFileName|Ext(\".py\")}}",
        "CommandId": "c-hz0jdfwcsr****",
        "CommandName": "CommandTestName",
        "InvokeId": "t-hz0jdfwd9f****",
        "TerminationMode": "ProcessTree",
        "Tags": {
          "Tag": [
            {
              "TagKey": "owner",
              "TagValue": "zhangsan"
            }
          ]
        }
      }
    ]
  }
}

Error codes

HTTP status code	Error code	Error message	Description
400	RegionId.ApiNotSupported	The api is not supported in this region.	The API operation cannot be called in the specified region. Check whether the specified RegionId parameter is valid.
400	NumberExceed.Tags	The Tags parameter number is exceed.	The number of tags exceeds the maximum limit.
400	Duplicate.TagKey	The Tag.N.Key contain duplicate key.	The specified tag key already exists. Tag keys must be unique.
400	InvalidTagKey.Malformed	The specified Tag.n.Key is not valid.	The specified Tag.N.Key parameter is invalid.
400	InvalidTagValue.Malformed	The specified Tag.n.Value is not valid.	The specified tag value is invalid.
400	MissingParameter.TagKey	You must specify Tag.N.Key.	The tag key is not specified.
400	InvalidParam.PageNumber	The specified parameter is invalid.
400	InvalidParam.PageSize	The specified parameter is invalid.
400	InvalidParameter.NextToken	The specified parameter NextToken is not valid.	The specified parameter NextToken is illegal.
400	InvalidParameter.MaxResults	The specified parameter MaxResults is not valid.	The specified parameter MaxResults is illegal.
500	InternalError.Dispatch	An error occurred when you dispatched the request.	An error occurred while the request is being sent. Try again later.
403	Operation.Forbidden	The operation is not permitted.	The operation is not supported.
404	InvalidRegionId.NotFound	The RegionId provided does not exist in our records.	Region information error

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.