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 need to check the actual execution results by viewing the return values of this operation. The actual output takes precedence.
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, avoiding frequent polling and improving efficiency.
When querying the first page of a paging query, set only MaxResults to limit the number of entries returned. The NextToken value in the response serves as the credential for querying subsequent pages. When querying subsequent pages, set the NextToken parameter to the NextToken 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 aggregation status across multiple instances.
  - DescribeInvocationResults returns only the individual execution status on each instance, without the aggregation status across multiple instances.
- When a single RunCommand/InvokeCommand call specifies one instance:
  - DescribeInvocations and DescribeInvocationResults are largely interchangeable and can replace each other.
- When you need to view the execution history of scheduled (periodic) tasks or tasks that execute automatically on 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 need to view the command content and parameters, only DescribeInvocations returns CommandContent.

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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 ID of the resource group to which the command execution belongs. After you specify this parameter, the command execution results are filtered based on the ResourceGroupId specified when the command was run.	rg-bp67acfmxazb4p****
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 was set to `Period`, `NextRebootOnly`, or `EveryReboot` when `RunCommand` or `InvokeCommand` was called. false: Queries commands in the following two states: Commands for which the `RepeatMode` parameter was set to `Once` when `RunCommand` or `InvokeCommand` was 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 was manually stopped on some instances while the remaining instances completed execution. Success: The command execution status on each instance is Stopped or Success, and at least one instance has a command execution status of Success. Immediately run 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 succeeded on some instances but failed on others. 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 complete paging query operations.	1
PageSize	integer	No	Note This parameter is about to be deprecated. Use NextToken and MaxResults to complete paging query operations.	10
MaxResults	integer	No	The maximum number of entries per page for a paging 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 resource count with this tag cannot exceed 1,000. If you use multiple tags to filter resources, the resource count with all specified tags attached cannot exceed 1,000. If the resource count exceeds 1,000, use the ListTagResources operation 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	The OSS delivery configuration for the command execution output.	oss://testBucket/testPrefix
InvocationStatus	string	The overall execution status of the command. The overall execution status depends on the common execution status across all instances in this call. Valid values: 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. Running: The command is running on instances. The overall execution status is Running if the command execution status on at least one instance is Running. Success: The command execution status on each instance is Stopped or Success, and at least one instance has a command execution status of Success. Immediately run 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: The command execution status on each instance is Stopped or Failed. The overall execution status is Failed when the command execution status on one or more instances is one of the following: Command validation failed (Invalid). Command delivery failed (Aborted). Command execution completed with a non-zero exit code (Failed). Command execution timed out (Timeout). Command execution encountered an exception (Error). Stopping: The task is being stopped. The overall execution status is Stopping if the command execution status on at least one instance is Stopping. Stopped: The task has been stopped. The overall execution status is Stopped when the command execution status on all instances is Stopped. The status is Stopped when the instance-level status is one of the following: Task was canceled (Cancelled). Task was terminated (Terminated). PartialFailed: The command succeeded on some instances but failed on others. The overall execution status is PartialFailed when the command execution status on each instance is Success, Failed, or Stopped. Note The `InvokeStatus` response parameter has a similar meaning, but we recommend that you check this parameter instead.	Running
Parameters	string	The custom parameters in the command.	{}
Timed	boolean	Indicates whether the command will be automatically run in the future.	false
CommandDescription	string	The command description.	testDescription
Timeout	integer	The maximum timeout period for the command execution on ECS instances. Unit: seconds. If the command cannot be run for some reason, a timeout occurs. When a timeout occurs, the command process is forcefully terminated by canceling the PID of the command.	60
InvokeInstances	object
InvokeInstance	array<object>	The target instance set type.
	object	The execution status list.
Dropped	integer	The length of the truncated and discarded text after the text in the Output field exceeds 24 KB.	0
InvocationStatus	string	The command execution status on a single instance. Valid values: Pending: The system is verifying or sending the command. Invalid: The specified command type or parameters are invalid. Aborted: Failed to send the command to the instance. The instance must be running, and the command must be deliverable within 1 minute. Running: The command is running on the instance. Success: One-time execution: The command execution is complete and the exit code is 0. Scheduled execution: The last execution was successful with an exit code of 0, and the specified schedule has ended. Failed: One-time execution: The command execution is complete and the exit code is non-zero. Scheduled execution: The last execution was successful with an exit code of non-zero, and the specified schedule will be terminated. Error: An exception occurred during command execution and the command cannot continue. Timeout: The command execution timed out. Cancelled: The execution action has been canceled and the command was never started. Stopping: The task is being stopped. Terminated: The command was terminated during execution. Scheduled: One-time execution: Not applicable. This value does not appear. Scheduled execution: Waiting to run.	Success
InstanceId	string	The instance ID.	i-bp1i7gg30r52z2em****
Timed	boolean	Indicates whether the command will be automatically run in the future.	false
InstanceInvokeStatus	string	The command execution status on a single instance. Note We recommend that you check the `InvocationStatus` parameter instead of this parameter.	Finished
ExitCode	integer	The exit code of the command process. Valid values: For Linux instances, the exit code of the Shell process. For Windows instances, the exit code of the Bat or PowerShell process.	0
ErrorInfo	string	The details of the command delivery failure or execution failure. Valid values: Empty: The command ran normally. The security group rules denied access to the aliyun service: The security group rules 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 during command execution. The specified instance was not running during task execution: The instance was not running when the command started to run. 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 directory does not exist. The cron expression is invalid: The specified cron expression is invalid. The aliyun service is not running on the instance: Cloud Assistant Agent is not running. The aliyun service in the instance does not response: Cloud Assistant Agent is not responding. The aliyun service in the instance is upgrading during task execution: Cloud Assistant Agent is being upgraded. The aliyun service in the instance need to be upgraded to at least version to support the feature: Cloud Assistant Agent needs to be upgraded. is the minimum version that supports the feature, and is the specific feature. The command delivery has been timeout: Command delivery 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 completed with a non-zero exit code. The specified instance was released during task execution: The instance was released during file delivery.	the specified instance does not exists
StartTime	string	The time when the command started to run on the instance.	2019-12-20T06:15:55Z
Repeats	integer	The number of times the command was run on the instance. If the execution mode is one-time execution, the value is 0 or 1. If the execution mode is scheduled execution, the value is the number of times the command has been run.	0
OssOutputUri	string	The OSS file URI to which the command execution output is delivered. This field is an empty string when delivery fails or is in progress.	oss://testBucket/testPrefix/output.txt
OssOutputStatus	string	The delivery status of the command execution output. Valid values: InProgress: Delivery is in progress. Finished: Delivery is complete. Failed: Delivery failed.	Finished
OssOutputErrorCode	string	The fault code when delivery fails. This field is returned only when OssOutputStatus is Failed. Valid values: CloudAssistant.UnsupportedInvocationStatus: The task status does not support delivery. CloudAssistant.ClientNeedUpgrade: The Cloud Assistant Agent version does not support delivery. The Cloud Assistant Agent version on Linux instances must be later than 2.2.4.1007, and the version on Windows instances must be later than 2.1.4.1007. OSS.AccessDenied: The user does not have access permissions on the specified bucket. OSS.NoSuchBucket: The specified bucket does not exist. OSS.FileImmutable: The data in the bucket is in protection status. OSS.InvalidObjectName: The object name is invalid, including cases where the object name is not specified, the object name exceeds the length limit, or the specified object name is invalid.	CloudAssistant.UnsupportedInvocationStatus
OssOutputErrorInfo	string	The error details when delivery fails. This field is 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 command output. If ContentEncoding is set to PlainText, the original output is returned. If ContentEncoding is set to Base64, the Base64-encoded output is returned.	OutPutTestmsg
CreationTime	string	The start time of the command execution.	2019-12-20T06:15:54Z
UpdateTime	string	The time when the command status was updated.	2020-01-19T09:15:47Z
ErrorCode	string	The error code for command delivery failure or execution failure. Valid values: Empty: The command ran normally. InstanceNotExists: The specified instance does not exist or has been released. InstanceReleased: The instance was released during concurrent execution. InstanceNotRunning: The instance was not running when the command started to run. CommandNotApplicable: The command is not applicable to the specified instance. AccountNotExists: The specified username for running the command does not exist. DirectoryNotExists: The specified directory does not exist. BadCronExpression: The specified cron expression is invalid. ClientNotRunning: Cloud Assistant Agent is not running. ClientNotResponse: Cloud Assistant Agent is not responding. ClientIsUpgrading: Cloud Assistant Agent is being upgraded. ClientNeedUpgrade: Cloud Assistant Agent needs to be upgraded. DeliveryTimeout: Command delivery timed out. ExecutionTimeout: Concurrent execution timed out. ExecutionException: An exception occurred during concurrent execution. ExecutionInterrupted: The concurrent execution task was interrupted. ExitCodeNonzero: Concurrent execution completed with a non-zero exit code. SecurityGroupRuleDenied: The security group rules denied access to the Cloud Assistant service. TaskConcurrencyLimit: The number of concurrent task executions exceeded the maximum quota.	InstanceNotExists
StopTime	string	The time when `StopInvocation` was called to stop the command execution.	2020-01-19T09:15:47Z
CommandContent	string	The command content. If ContentEncoding is set to PlainText, the original script content is returned. If ContentEncoding is set to Base64, the Base64-encoded script content is returned.	cnBtIC1xYSB8IGdyZXAgdnNm****
WorkingDir	string	The working directory of the command execution.	/home/
RepeatMode	string	The execution mode of the command. 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. DryRun: Only a dry run of the request is performed. The command is not actually run. The system checks request parameters, instance execution environment, and Cloud Assistant Agent status.	Once
InvokeStatus	string	The overall execution status of the command. Note We recommend that you check the `InvocationStatus` parameter instead of this parameter.	Finished
CommandType	string	The command type.	RunShellScript
Username	string	The username used to run the command on the ECS instance.	test
ContainerId	string	The container ID.	ab141ddfbacfe02d9dbc25966ed971536124527097398d419a6746873fea****
ContainerName	string	The container name.	test-container
CreationTime	string	The time when the task was created.	2020-01-19T09:15:46Z
Frequency	string	The schedule for the scheduled command execution.	0 /20 * * *
Launcher	string	The launcher for script execution. The launcher cannot exceed 1 KB in length.	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 the task is stopped (manually stopped or interrupted due to timeout). Valid values: Process: Stops the current script process. ProcessTree: Stops the current process tree (the collection of the script process and 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
404	InvalidCommandId.NotFound	The specified commandId does not exist

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.