Queries the cloud assistant command invocation list and status on your ECS instances.

Description

When the InvokeStatus value is Finished, it indicates that the command process is Finished, but not necessarily is as effective as expected. You can check the specific invocation result by calling DescribeInvocationResults.

Request parameters

Name Type Required Description
Action String Yes The name of this interface. Value: DescribeInvocations.
RegionId String Yes The region ID. For more information, see DescribeRegions.
InvokeId String No Invocation ID of a command process.
CommandId String No Command ID. You can query all the available CommandId by calling the DescribeCommands.
CommandName String No Name of the command.
Type String No Type of the command. Optional values:
  • RunBatScript: A Bat script for Windows instances.
  • RunPowerShellScript: A PowerShell script for Windows instances.
  • RunShellScript: A Shell script for Linux instances.
Timed Boolean No Whether the command is periodically performed or not. Optional values:
  • True: Periodical invocation.
  • False: Not periodical invocation.
Default value: False.
InvokeStatus String No Specifies the overall invocation status of a command. The overall invocation status is depends on  the invocation status of command processes on all target instances. Optional values:
  • Running: The command process is running.
    • Periodical invocation: Before you manually stop a command on periodical invocation, the command process is always in the Running (Running) status.
    • One-time invocation: The overall invocation status is Running (Running), as long as the command process is in the Running (Running) status on any target instance.
  • Finished: The invocation of the command process is completed.
    • Periodical invocation: The command process can never be in the Finished (Finished) status.

    • One-time invocation: When invocation of command processes on all the target instances managed by the specified command is completed, the overall invocation status is Finished (Finished).

      Or when you manually stop the invocation of command processes on some target instances (Stopped) and the invocation on other target instances is completed, the overall invocation status is Finished (Finished).

  • Failed: The command process invocation failed, the command process timed out, or encountered other exceptions.
    • Periodical invocation: The command process can never be in the Failed (Failed) status.
    • One-time invocation: When invocation of command processes on all the target instances managed by the specified command fails, the overall invocation status is Failed (Failed).
  • PartialFailed: Part of the invocation of command processes failed.
    • Periodical invocation: The command process can never be in the PartialFailed (PartialFailed) status.
    • One-time invocation: The overall invocation status is PartialFailed (PartialFailed) when any command process is in the Failed (Failed) status on any target instance managed by the specified command.
  • Stopped: The command process is manually stopped.
InstanceId String No Instance ID. When you pass in the parameter, the system queries the invocation-record status of all commands on the instance.
PageNumber Integer No Current page number. Start value: 1.

Default value: 1.

PageSize Integer No The number of rows per page for multi-page display. Maximum value: 50.

Default value: 10.

Response parameters

Name Type Description
TotalCount Integer Total number of commands
PageNumber Integer Page number of the query result
PageSize Integer The number of rows per page
Invocations Array Type of the command invocation record set (InvocationSetType)
Type of the command invocation record set (InvocationSetType)
Name Type Description
Invocation Array Command invocation type (InvocationType)
Command invocation type (InvocationType)
Name Type Description
Invokeid String Command invocation ID
CommandId String  Command ID
CommandName String Command name
InvokeStatus String Specifies the overall invocation status of a command. The overall invocation status is dependent on the invocation status of command processes on all the target instances. InstanceInvokeStatus. Optional values:
  • Running: The command process is running.
    • Periodical invocation: Before you manually stop a command on periodical invocation, the command process is always in the Running (Running) status.
    • One-time invocation: The overall invocation status is Running (Running), as long as the command process is in the Running (Running) status on any target instance.
  • Finished: The invocation of the command process is completed.
    • Periodical invocation: The command process can never be in the Finished (Finished) status.

    • One-time invocation: When invocation of command processes on all the target instances managed by the specified command is completed, the overall invocation status is Finished (Finished).

      Or when you manually stop the invocation of command processes on some target instances Stopped (Stopped), and the invocation on other target instances is completed, the overall invocation status is Finished (Finished).

  • Failed: The command process invocation failed, the command process timed out, or encountered other exceptions.
    • Periodical invocation: The command process can never be in the Failed (Failed) status.
    • One-time invocation: When invocation of command processes on all the target instances managed by the specified command fails, the overall invocation status is Failed (Failed).
  • PartialFailed: Part of the invocation of command processes failed.
    • Periodical invocation: The command process can never be in the PartialFailed (PartialFailed) status.
    • One-time invocation: The overall invocation status is PartialFailed (PartialFailed )  when any command process is in the Failed (Failed) status on any target instance managed by the specified command.
  • Stopped: The command process is manually stopped.
CommandType String Command type
Timed Boolean Whether the command is periodically performed or not.
Frequency String The interval of a periodical task. 

For more information about the value specifications, see Cron expression.

Invokeinstances Array Type of the target instance set for invocation (InvokeInstanceSetType)
Type of the target instance set for invocation (InvokeInstanceSetType)
Name Type Description
Invokeinstance Array Invocation status type of the target instance (InvokeInstanceType)
Invocation status type of the target instance (InvokeInstanceType)
Name Type Description
InstanceId String Instance ID
InstanceInvokeStatus String The command process status of the specified instance.
  • Running: The command process is running.
    • Periodical invocation: Before you manually stop a command on periodical invocation, the command process is always in the Running (Running ) status.
    • One-time invocation: The command process status on the specified instance is Running (Running).
  • Finished: The invocation of the command process is completed.
    • Periodical invocation: The command process can never be in the Finished (Finished) status.
    • One-time invocation: The command process status on the specified instance is Finished (Finished).
  • Failed: The command process invocation failed, the command process timed out, or encountered other exceptions.
    • Periodical invocation: The command process can never be in the Failed (Failed) status.
    • One-time invocation: The command process status on the specified instance is Failed (Failed).
  • Stopped: The command process is manually stopped.

Examples

Request example 
https://ecs.aliyuncs.com/?Action=DescribeInvocations
&RegionId=cn-hangzhou
&<Common Request Parameters>
Success response example

XML format

<DescribeInvocationsResponse>
    <TotalCount>5</TotalCount>
    <PageNumber>1</PageNumber>
    <PageSize>10</PageSize>
    <Invocations>
        <Invocation>
                <InvokeStatus>Running</InvokeStatus>
                <InvokeId>t-a8935b93739442e59ed621a6xxxxxxxx</InvokeId>
                <CommandName>Test1</CommandName>
                <CommandType>RunShellScript</CommandType>
                <Frequency>0 */20 * * * *</Frequency>
                <InvokeInstances>
                    <InvokeInstance>
                        <InstanceId>i-uf614fhehhzmxxxxxxxx</InstanceId>
                        <InstanceInvokeStatus>finished</InstanceInvokeStatus>
                    </InvokeInstance>
                    <InvokeInstance>
                        <InstanceId>i-uf64isakb713xxxxxxxx</InstanceId>
                        <InstanceInvokeStatus>running</InstanceInvokeStatus>
                    </InvokeInstance>
                </InvokeInstances>
                <Timed>True</Timed>
                <CommandId>c-e67505b2be3e477dae94c0f0xxxxxxxx</CommandId>
        </Invocation>
        <Invocation>
                <InvokeStatus>Running</InvokeStatus>
                <InvokeId>t-001937b74e2a4242891fc789xxxxxxxx</InvokeId>
                <CommandName>Test2</CommandName>
                <CommandType>RunShellScript</CommandType>
                <Frequency>0 */15 * * * *</Frequency>
                <InvokeInstances>
                    <InvokeInstance>
                    <InstanceId>i-mbhsiukj851xxxxjk</InstanceId>
                        <InstanceInvokeStatus>finished</InstanceInvokeStatus>
                    </InvokeInstance>
                    <InvokeInstance>
                        <InstanceId>i-uf64isakb713xxxxxxxx</InstanceId>
                        <InstanceInvokeStatus>Running</InstanceInvokeStatus>
                    </InvokeInstance>
                </InvokeInstances>
                <Timed>True</Timed>
                <CommandId>c-6b0fb9d72adc421abab462abxxxxxxxx</CommandId>
        </Invocation>
        <Invocation>
                <InvokeStatus>success</InvokeStatus>
                <InvokeId>t-bd09beef975b4e50883e5df1xxxxxxxx</InvokeId>
                <CommandName>Test3</CommandName>
                <CommandType>RunShellScript</CommandType>
                <Frequency> </Frequency>
                <InvokeInstances>
                    <InvokeInstance>
                        <InstanceId>i-uf614fhehhzmxxxxxxxx</InstanceId>
                        <InstanceInvokeStatus>finished</InstanceInvokeStatus>
                    </InvokeInstance>
                    sa<InvokeInstance>
                        <InstanceId>i-uf64isakb713xxxxxxxx</InstanceId>
                        <InstanceInvokeStatus>finished</InstanceInvokeStatus>
                    </InvokeInstance>
                </InvokeInstances>
                <Timed>false</Timed>
                <CommandId>c-6b0fb9d72adc421abab462abxxxxxxxx</CommandId>
        </Invocation>
        <Invocation>
                <InvokeStatus>Success</InvokeStatus>
                <InvokeId>t-c7499dfdfdb44e8aa0acce5bxxxxxxxx</InvokeId>
                <CommandName>test</CommandName>
                <CommandType>RunShellScript</CommandType>
                <Frequency> </Frequency>
                <InvokeInstances>
                    <InvokeInstance>
                        <InstanceId>i-uf614fhehhzmxxxxxxxx</InstanceId>
                        <InstanceInvokeStatus>finished</InstanceInvokeStatus>
                    </InvokeInstance>
                </InvokeInstances>
                <Timed>false</Timed>
                <CommandId>c-d2a8ccf6440641ec8635f194xxxxxxxx</CommandId>
        </Invocation>
        <InstanceId>Invention>
                <InvokeStatus>Running</InvokeStatus>
                <InvokeId>t-e733d4172fee452c98106f58xxxxxxxx</InvokeId>
                <CommandName>Test4</CommandName>
                <CommandType>RunBatScript</CommandType>
                <Frequency> </Frequency>
                <InvokeInstances>
                    <InvokeInstance>
                        <InstanceId>i-uf614fhehhzmxxxxxxxx</InstanceId>
                        <Instanceinvokestatus> running </instanceinvokestatus>
                    </InvokeInstance>
                </InvokeInstances>
                <Timed>false</Timed>
                <CommandId>c-3f0e5e4a21c045afa197e036xxxxxxxx</CommandId>
        </Invocation>
    </Invocations>
    <RequestId>12E7974A-5AA5-4933-A44C-A16Cxxxxxxxx</RequestId>
</DescribeInvocationsResponse>
JSON format 
{
    "TotalCount": 5,
    "PageNumber": 1,
    "PageSize": 10,
    "Invocations": {
        "Invocation": [
            {
                "InvokeStatus": "Running",
                "InvokeId": "t-a8935b93739442e59ed621a6xxxxxxxx",
                "CommandName": "Test1",
                "CommandType": "RunShellScript",
                "Frequency": "0 */20 * * * *",
                "InvokeInstances": {
                    "InvokeInstance": [
                        {
                            "InstanceId": "i-uf614fhehhzmxxxxxxxx",
                            "InstanceInvokeStatus": "finished"
                        },
                        {
                            "InstanceId": "i-uf64isakb713xxxxxxxx",
                            "InstanceInvokeStatus": "running"
                        }
                    ]
                },
                "Timed": true,
                "CommandId": "c-e67505b2be3e477dae94c0f0xxxxxxxx"
            },
            {
                "InvokeStatus": "Running",
                "InvokeId": "t-001937b74e2a4242891fc789xxxxxxxx",
                "CommandName": "Test2",
                "CommandType": "RunShellScript",
                "Frequency": "0 */15 * * * *",
                "InvokeInstances": {
                    "InvokeInstance": [
                        {
                            "InstanceId": "i-uf614fhehhzmxxxxxxxx",
                            "InstanceInvokeStatus": "finished"
                        },
                        {
                            "InstanceId": "i-uf64isakb713xxxxxxxx",
                            "InstanceInvokeStatus": "running"
                        }
                    ]
                },
                "Timed": true,
                "CommandId": "c-6b0fb9d72adc421abab462abxxxxxxxx"
            },
            {
                "InvokeStatus": "success",
                "InvokeId": "t-bd09beef975b4e50883e5df1xxxxxxxx",
                "CommandName": "Test3",
                "CommandType": "RunShellScript",
                "Frequency": "",
                "InvokeInstances": {
                    "InvokeInstance": [
                        {
                            "InstanceId": "i-uf614fhehhzmxxxxxxxx",
                            "InstanceInvokeStatus": "finished"
                        },
                        {
                            "InstanceId": "i-uf64isakb713xxxxxxxx",
                            "InstanceInvokeStatus": "finished"
                        }
                    ]
                },
                "Timed": false,
                "CommandId": "c-6b0fb9d72adc421abab462abxxxxxxxx"
            },
            {
                "InvokeStatus": "success",
                "InvokeId": "t-c7499dfdfdb44e8aa0acce5bxxxxxxxx",
                "CommandName": "test",
                "CommandType": "RunShellScript",
                "Frequency": "",
                "InvokeInstances": {
                    "InvokeInstance": [
                        {
                            "InstanceId": "i-uf614fhehhzmxxxxxxxx",
                            "InstanceInvokeStatus": "finished"
                        }
                    ]
                },
                "Timed": false,
                "CommandId": "c-d2a8ccf6440641ec8635f194xxxxxxxx"
            },
            {
                "InvokeStatus": "Running",
                "InvokeId": "t-e733d4172fee452c98106f58xxxxxxxx",
                "CommandName": "Test4",
                "CommandType": "RunBatScript",
                "Frequency": "",
                "InvokeInstances": {
                    "InvokeInstance": [
                        {
                            "InstanceId": "i-uf614fhehhzmxxxxxxxx",
                            "InstanceInvokeStatus": "running"
                        }
                    ]
                },
                "Timed": false,
                "CommandId": "c-3f0e5e4a21c045afa197e036xxxxxxxx"
            }
        ]
    },
    "RequestId": "12E7974A-5AA5-4933-A44C-A16Cxxxxxxxx"
}
Error response example

XML format

<Error>
    <RequestId>540CFF28-407A-40B5-B6A5-74Bxxxxxxxxx</RequestId>
    <HostId>ecs.aliyuncs.com</HostId>
    <Code>MissingParameter.RegionId</Code>
    <Message>The input parameter “RegionId” that is mandatory for processing this request is not supplied.</Message>
</Error>
JSON format 
{
    "RequestId": "540CFF28-407A-40B5-B6A5-74Bxxxxxxxxx",
    "HostId": "ecs.aliyuncs.com"
    "Code": "MissingParameter.RegionId"
    "Message": "The input parameter “RegionId” that is mandatory for processing this request is not supplied."
}

Error codes

The following error codes are specific to this interface. For more error codes, visit the API error center.

Error code Error message  HTTP status code  Meaning
MissingParameter.RegionId The input parameter “RegionId” that is mandatory for processing this request is not supplied. 400 You must specify the required parameter of RegionId, or you cannot use the resources in the specified RegionId.
InvalidRegionId.NotFound The RegionId provided does not exist in our items. 404 The specified  RegionId  does not exist.
InternalError.Dispatch An internal error occurred when dispath the request 500 Internal error. Please try again later.