DescribeCommands - Elastic Compute Service - Alibaba Cloud Documentation Center

Queries the Cloud Assistant commands that you created or the common Cloud Assistant commands that Alibaba Cloud provides.

Operation description

Usage notes

If you specify only Action and RegionId, all available commands (CommandId) that you created in the specified region are queried by default.
You can use one of the following methods to check the responses:
- Method 1: During a paged query, when you call the DescribeCommands operation to retrieve the first page of results, set MaxResults to specify the maximum number of entries to return in the call. The return value of NextToken is a pagination token, which can be used in the next request to retrieve a new page of results. When you call the DescribeCommands operation to retrieve a new page of results, set NextToken to the NextToken value returned in the previous call and set MaxResults to specify the maximum number of entries to return in this call.
- Method 2: Use PageSize to specify the number of entries to return on each page and then use PageNumber to specify the number of the page to return. You can use only one of the preceding methods. If you specify MaxResults or NextToken, the PageSize and PageNumber request parameters do not take effect and the TotalCount response parameter is invalid.

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
ecs:DescribeCommands	get	Command `acs:ecs:{#regionId}:{#accountId}:command/` *Command `acs:ecs:{#regionId}:{#accountId}:command/{#commandId}`	none	none

Request parameters

Parameter	Type	Required	Description	Example
RegionId	string	Yes	The region ID of the command. You can call the DescribeRegions operation to query the most recent region list.	cn-hangzhou
Provider	string	No	The provider of the common command. Take note of the following items: If you do not specify this parameter, all the commands that you created are queried. If you set this parameter to `AlibabaCloud`, all the common commands provided by Alibaba Cloud are queried. If you set this parameter to a specific provider, all the common commands provided by the provider are queried. Examples: If you set `Provider` to AlibabaCloud.ECS.GuestOS, all the common commands provided by `AlibabaCloud.ECS.GuestOS` are queried. If you set `Provider` to AlibabaCloud.ECS.GuestOSDiagnose, all the common commands provided by `AlibabaCloud.ECS.GuestOSDiagnose` are queried.	AlibabaCloud
CommandId	string	No	The ID of the command.	c-hz01272yr52****
Name	string	No	The name of the command. If you specify `Provider`, fuzzy search is supported by default. If you do not specify `Provider`, prefix-based fuzzy search is supported. For example, if you specify `command*`, all commands whose names start with `command` are queried.	testName
Description	string	No	The description of the command. If you specify `Provider`, fuzzy search is supported by default. If you do not specify `Provider`, prefix-based fuzzy search is supported. For example, if you specify `test*`, all commands whose descriptions start with `test` are queried.	testDescription
Type	string	No	The type of the command. Valid values: RunBatScript: batch command, applicable to Windows instances RunPowerShellScript: PowerShell command, applicable to Windows instances RunShellScript: shell command, applicable to Linux instances	RunShellScript
ContentEncoding	string	No	The encoding mode of the `CommandContent` and `Output` values in the response. Valid values: PlainText: returns the original command content and command output. Base64: returns the Base64-encoded command content and command output. Default value: Base64.	PlainText
PageNumber	long	No	The page number. Pages start from page 1. Default value: 1.	1
PageSize	long	No	The number of entries per page. Valid values: 1 to 50. Default value: 10.	10
MaxResults	integer	No	The maximum number of entries per page. Valid values: 1 to 50. Default value: 10.	10
NextToken	string	No	The pagination token that is used in the next request to retrieve a new page of results. You do not need to specify this parameter for the first request. You must specify the token that is obtained from the previous query as the value of NextToken.	AAAAAdDWBF2
Latest	boolean	No	Specifies whether to query only the latest version of common commands when common commands are queried. This parameter does not affect the query for private commands. true: queries only the latest version of common commands. false: queries all versions of common commands. Default value: false.	true
ResourceGroupId	string	No	The ID of the resource group to which the command belongs.	rg-123******
Tag	array<object>	No	The list of tags.
	object	No	The list of tags.
Key	string	No	The key of tag N of the command. Valid values of N: 1 to 20. The tag key cannot be an empty string. If a single tag is specified to query resources, up to 1,000 resources that have this tag added can be displayed in the response. If multiple tags are specified to query resources, up to 1,000 resources that have all these tags added can be displayed in the response. To query more than 1,000 resources that have specified tags, call the ListTagResources operation. The tag key can be up to 64 characters in length and cannot start with `acs:` or `aliyun`. It cannot contain `http://` or `https://`.	TestKey
Value	string	No	The value of tag N of the command. Valid values of N: 1 to 20. The tag value can be an empty string. It can be up to 128 characters in length and cannot contain `http://` or `https://`.	TestValue

Response parameters

Parameter	Type	Description	Example
	object
PageSize	long	The number of entries per page.	10
RequestId	string	The ID of the request.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3****
PageNumber	long	The page number.	1
TotalCount	long	The total number of commands.	5
NextToken	string	A pagination token. It can be used in the next request to retrieve a new page of results.	AAAAAdDWBF2
Commands	array<object>	The queried commands.
Command	object	The time when the command was created.
CreationTime	string	The time when the command was created.	2020-11-17T06:52Z
Type	string	The type of the command.	RunShellScript
Timeout	long	The timeout period. Unit: seconds.	3600
InvokeTimes	integer	The number of tasks created by using the command.	2
CommandId	string	The command ID.	c-hz01272yr52****
WorkingDir	string	The execution path of the command.	/home/
Description	string	The description of the command.	testDescription
Version	integer	The version of the common command. If multiple common commands from the same provider (`Provider`) belong to the same category and have the same name, these commands are different versions of the same command. This parameter is not returned for the Cloud Assistant commands that you created.	1
Provider	string	The provider of the common command.	AlibabaCloud.ECS.GuestOS
CommandContent	string	The content of the command, which is Base64-encoded. If ContentEncoding is set to PlainText in the request, the original command content is returned. If ContentEncoding is set to Base64 in the request, the Base64-encoded command content is returned.	Y2QgL3Jvb3Q=
Category	string	The category of the common command.	“”
Latest	boolean	Indicates whether the common command is of the latest version. If multiple common commands from the same provider (`Provider`) belong to the same category and have the same name, these commands are different versions of the same command. This parameter is not returned for the Cloud Assistant commands that you created.	true
Name	string	The name of the command.	testName
EnableParameter	boolean	Indicates whether the custom parameter feature is enabled for the command.	true
ResourceGroupId	string	The ID of the resource group to which the command belongs.	rg-123******
Launcher	string	The launcher for script execution. The value cannot exceed 1 KB in length. Note This parameter is not publicly available.	python3 -u {{ACS::ScriptFileName\|Ext(".py")}}
ParameterNames	array	The custom parameter names that are parsed from the command content specified when the command was created. If the custom parameter feature is disabled, an empty list is returned.
ParameterName	string	The list of custom parameter names that are parsed from the command content specified when the command was created. If the custom parameter feature is disabled, an empty list is returned.	['parameter1','parameter2']
ParameterDefinitions	array<object>	The custom parameters.
ParameterDefinition	object	The custom parameters.
Required	boolean	Indicates whether the custom parameter is required. Valid values: true false Default value: false.	true
Description	string	The description of the custom parameter.	Download path of the Cloud Assistant Agent installation package.
DefaultValue	string	The default value of the custom parameter.	https://aliyun-client-assist.oss-accelerate.aliyuncs.com/linux/aliyun_assist_latest.rpm
ParameterName	string	The name of the custom parameter.	DownloadUrl
PossibleValues	array	The valid values of the custom parameter of the enumeration type.
PossibleValue	string	The valid values of the custom parameter of the enumeration type.	"Linux","Windows"
Tags	array<object>	The tags of the command.
Tag	object	The tags of the command.
TagKey	string	The tag key of the command.	owner
TagValue	string	The tag value of the command.	zhangsan

Examples

Sample success responses

JSONformat

{
  "PageSize": 10,
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****",
  "PageNumber": 1,
  "TotalCount": 5,
  "NextToken": "AAAAAdDWBF2",
  "Commands": {
    "Command": [
      {
        "CreationTime": "2020-11-17T06:52Z",
        "Type": "RunShellScript",
        "Timeout": 3600,
        "InvokeTimes": 2,
        "CommandId": "c-hz01272yr52****",
        "WorkingDir": "/home/",
        "Description": "testDescription",
        "Version": 1,
        "Provider": "AlibabaCloud.ECS.GuestOS",
        "CommandContent": "Y2QgL3Jvb3Q=",
        "Category": "“”",
        "Latest": true,
        "Name": "testName",
        "EnableParameter": true,
        "ResourceGroupId": "rg-123******",
        "Launcher": "python3 -u {{ACS::ScriptFileName|Ext(\".py\")}}\n",
        "ParameterNames": {
          "ParameterName": [
            "['parameter1','parameter2']"
          ]
        },
        "ParameterDefinitions": {
          "ParameterDefinition": [
            {
              "Required": true,
              "Description": "Download path of the Cloud Assistant Agent installation package.",
              "DefaultValue": "https://aliyun-client-assist.oss-accelerate.aliyuncs.com/linux/aliyun_assist_latest.rpm",
              "ParameterName": "DownloadUrl",
              "PossibleValues": {
                "PossibleValue": [
                  "\"Linux\",\"Windows\""
                ]
              }
            }
          ]
        },
        "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.	The specified PageNumber parameter is invalid.
400	InvalidParam.PageSize	The specified parameter is invalid.	The specified PageSize 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.
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.	The RegionId provided does not exist
500	InternalError.Dispatch	An error occurred when you dispatched the request.	An error occurred while the request is being sent. Try again later.
500	ServiceUnavailable	The request has failed due to a temporary failure of the server.	-
500	InternalError	The request processing has failed due to some unknown error.	An internal error has occurred. Try again later.

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation
2024-10-21	The Error code has changed. The response structure of the API has changed	View Change Details
2023-12-21	The Error code has changed. The request parameters of the API has changed. The response structure of the API has changed	View Change Details
2023-10-24	The Error code has changed. The request parameters of the API has changed. The response structure of the API has changed	View Change Details
2023-05-12	The Error code has changed	View Change Details
2022-02-25	The Error code has changed	View Change Details