Use DescribeCommands to query Cloud Assistant commands - Elastic Compute Service - Alibaba Cloud - Elastic Compute Service

Queries Cloud Assistant commands that you manually created or public commands provided by Alibaba Cloud.

Operation description

If you specify only the Action and RegionId parameters without specifying other request parameters, all active commands (CommandId) that you manually created are queried by default.
When querying the first page of results with a paged query, 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 querying subsequent pages, set the NextToken parameter to the NextToken value obtained from the previous response as the query token, and set MaxResults to limit the number of entries returned.

Settings: When performing paging, use NextToken and MaxResults for optimal results.

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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:DescribeCommands

get

Command

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

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
Provider	string	No	The provider of the public command. Valid values: If this parameter is not specified, all Cloud Assistant commands that you manually created are queried by default. If this parameter is set to `AlibabaCloud`, all public commands provided by Alibaba Cloud are queried. If this parameter is set to a specific public command provider, all public commands provided by that provider are queried. Examples: If `Provider=AlibabaCloud.ECS.GuestOS`, public commands provided by `AlibabaCloud.ECS.GuestOS` are queried. If `Provider=AlibabaCloud.ECS.GuestOSDiagnose`, public commands provided by `AlibabaCloud.ECS.GuestOSDiagnose` are queried.	AlibabaCloud
CommandId	string	No	The command ID.	c-hz01272yr52****
Name	string	No	The name of the command. When the `Provider` parameter is specified parameter query public commands, fuzzy match is supported by default. When the `Provider` parameter is not specified parameter query private commands, fuzzy match is supported. For example, enter `command` to search for all commands whose names start with `command`, enter `command` to search for all commands whose names end with `command`, or enter `command` to search for all commands whose names contain `command`.	testName
Description	string	No	The description of the command. When the `Provider` parameter is specified parameter query public commands, fuzzy match is supported by default. When the `Provider` parameter is not specified parameter query private commands, fuzzy match is supported. For example, enter `test` to search for all commands whose descriptions start with `test`, enter `test` to search for all commands whose descriptions end with `test`, or enter `test` to search for all commands whose descriptions contain `test`.	testDescription
Type	string	No	The type of the command. 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
ContentEncoding	string	No	The encoding mode of the `CommandContent` and `Output` fields in the response. Valid values: PlainText: Returns the original script content and output. Base64: Returns the Base64-encoded script content and output. Default value: Base64.	PlainText
PageNumber	integer	No	Note This parameter is about to go offline. Use NextToken and MaxResults to complete paged query operations. For paging, use NextToken and MaxResults instead.	1
PageSize	integer	No	Note This parameter is about to go offline. Use NextToken and MaxResults to complete paged query operations. For paging, use NextToken and MaxResults instead.	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
Latest	boolean	No	Specifies whether to query only the latest version of public commands when the query results include public commands. This parameter does not affect the query of private commands. true: Queries only the latest version of public commands. false: Queries all versions of public 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 tags.
	object	No	The tag object.
Value	string	No	The tag value of the command. 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. 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 query resources. 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 command list.	1
TotalCount	integer	The total number of commands.	5
NextToken	string	The pagination token returned in this call.	AAAAAdDWBF2
Commands	object
Command	array<object>	The command dataset.
	array<object>	The command object.
ParameterDefinitions	object
ParameterDefinition	array<object>	The list of custom parameter details.
	array<object>	The custom parameter object.
DefaultValue	string	The default value of the custom parameter.	https://aliyun-client-assist.oss-accelerate.aliyuncs.com/linux/aliyun_assist_latest.rpm
Description	string	The description of the custom parameter.	Cloud Assistant Agent installation package path
Required	boolean	Indicates whether the custom parameter is required. true: Required. false: Not required. Default value: false.	true
ParameterName	string	The name of the custom parameter.	DownloadUrl
PossibleValues	object
PossibleValue	array	The list of possible values for the enumeration-type custom parameter.
	string	The possible value for the enumeration-type custom parameter.	"Linux","Windows"
PatternRegex	string	The regular expression rule for the custom parameter.	^[a-zA-Z0-9_-]{4,32}$
Description	string	The description of the command.	testDescription
Category	string	The category of the public command.	“”
ResourceGroupId	string	The ID of the resource group to which the command belongs.	rg-123******
ParameterNames	object
ParameterName	array	The list of custom parameter names parsed from the CommandContent when the command was created, returned as a list. If the custom parameter feature is not used, an empty list is returned.
	string	The custom parameter name.	['parameter1','parameter2']
Timeout	integer	The timeout period. Unit: seconds.	3600
Provider	string	The provider of the public command.	AlibabaCloud.ECS.GuestOS
Name	string	The name of the command.	testName
WorkingDir	string	The execution path.	/home/
CommandContent	string	The command content, transmitted in Base64 encoding. 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.	Y2QgL3Jvb3Q=
Type	string	The type of the command.	RunShellScript
Version	integer	The version of the public command. If multiple commands belong to the same `Provider` and have the same name and category, these commands are different versions of the same command. This value is not returned for Cloud Assistant commands that you manually created.	1
InvokeTimes	integer	The number of tasks created by using this command.	2
CreationTime	string	The time when the command was created.	2020-11-17T06:52Z
Launcher	string	The launcher for script execution. The launcher cannot exceed 1 KB in length.	python3 -u {{ACS::ScriptFileName\|Ext(".py")}}
Latest	boolean	Indicates whether the public command is the latest version. If multiple commands belong to the same `Provider` and have the same name and category, these commands are different versions of the same command. This value is not returned for Cloud Assistant commands that you manually created.	true
EnableParameter	boolean	Indicates whether the custom parameter feature is enabled for the command.	true
CommandId	string	The command ID.	c-hz01272yr52****
Tags	object
Tag	array<object>	The list of tags for the command.
	object	The tag information object of the command.
TagKey	string	The tag key of the command.	owner
TagValue	string	The tag value of the command.	zhangsan

Examples

Success response

JSON format

{
  "PageSize": 10,
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3****",
  "PageNumber": 1,
  "TotalCount": 5,
  "NextToken": "AAAAAdDWBF2",
  "Commands": {
    "Command": [
      {
        "ParameterDefinitions": {
          "ParameterDefinition": [
            {
              "DefaultValue": "https://aliyun-client-assist.oss-accelerate.aliyuncs.com/linux/aliyun_assist_latest.rpm",
              "Description": "Cloud Assistant Agent installation package path",
              "Required": true,
              "ParameterName": "DownloadUrl",
              "PossibleValues": {
                "PossibleValue": [
                  "\"Linux\",\"Windows\""
                ]
              },
              "PatternRegex": "^[a-zA-Z0-9_-]{4,32}$\u0000"
            }
          ]
        },
        "Description": "testDescription",
        "Category": "“”",
        "ResourceGroupId": "rg-123******",
        "ParameterNames": {
          "ParameterName": [
            "['parameter1','parameter2']"
          ]
        },
        "Timeout": 3600,
        "Provider": "AlibabaCloud.ECS.GuestOS",
        "Name": "testName",
        "WorkingDir": "/home/",
        "CommandContent": "Y2QgL3Jvb3Q=",
        "Type": "RunShellScript",
        "Version": 1,
        "InvokeTimes": 2,
        "CreationTime": "2020-11-17T06:52Z",
        "Launcher": "python3 -u {{ACS::ScriptFileName|Ext(\".py\")}}\n",
        "Latest": true,
        "EnableParameter": true,
        "CommandId": "c-hz01272yr52****",
        "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.
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.
403	Operation.Forbidden	The operation is not permitted.	The operation is not supported.
403	InvalidName.LengthLimitExceeded	The length of the parameter Name exceeds the upper limit.
403	InvalidDescription.LengthLimitExceeded	The length of the parameter Description exceeds the upper limit.
404	InvalidRegionId.NotFound	The RegionId provided does not exist in our records.	Region information error
404	InvalidCommandType.NotFound	The specified parameter Type does not exist.
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.