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Using CLI - Compute Environment
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Last updated: 2024-01-13 11:19:28
Using CLI - Compute Environment
Last updated: 2024-01-13 11:19:28
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Operation Scenarios

This document describes how to create a compute environment on TCCLI, submit a job to it, and then terminate it.

Prerequisites

You can get prepared as instructed in Preparations.

Directions

Installing and configuring TCCLI

1. Install TCCLI as instructed in Installing TCCLI.
2. Run the following command to verify whether TCCLI is successfully installed:
tccli batch help
If the following is returned, the installation is successful.
NAME
     batch
DESCRIPTION
     batch-2017-03-12
USEAGE
     tccli batch <action> [--param...]
OPTIONS
     help
     show the tccli batch help info
     --version
     specify a batch api version
AVAILABLE ACTION
     DescribeComputeEnv
     This API is used to query compute environment details
     CreateTaskTemplate
     This API is used to create a task template
3. Configure TCCLI as instructed in Configuring TCCLI.

Creating COS bucket for result storage

In this example, the returned result is directly output to the standard output of the system. BatchCompute can collect stdout and stderr from the standard output and upload them to the specified COS bucket upon task completion. You need to create a bucket and a subfolder for storage in advance.
Create the COS bucket and subfolder as instructed in Preparing COS Directory.

Creating compute environment

You can get and modify the official sample to create a BatchCompute compute environment under your personal account. The configuration items in the compute environment are as described below: You can also refer to APIs related to compute environment, such as CreateComputeEnv.
tccli batch CreateComputeEnv --version 2017-03-12 --ComputeEnv '{
    "EnvName": "test compute env",          // Compute environment name
    "EnvDescription": "test compute env",   // Compute environment description
    "EnvType": "MANAGED",                   // Compute environment type, which is `managed` here
    "EnvData": {                            // Specific configuration (please see the CVM instance creation description)
        "InternetAccessible": {
            "PublicIpAssigned": "TRUE",
            "InternetMaxBandwidthOut": 50
        },
        "LoginSettings": {
            "Password": "*****"             // Login password (to be replaced)
        },
        "InstanceType": "S1.SMALL1",        // CVM instance type
        "ImageId": "img-xxxxyyyy"           // CVM image ID (to be replaced)
    },
    "DesiredComputeNodeCount": 2            // Number of desired compute nodes
}'
--Placement'{
    "Zone": "ap-guangzhou-2"                // AZ (to be replaced)
}'

Sample request

tccli batch CreateComputeEnv --version 2017-03-12  --ComputeEnv '{"EnvName": "test compute env", "EnvDescription": "test compute env", "EnvType": "MANAGED", "EnvData": {"InstanceType": "S1.SMALL2", "ImageId": "to be replaced", "LoginSettings": {"Password": "to be replaced"}, "InternetAccessible": {"PublicIpAssigned": "TRUE", "InternetMaxBandwidthOut": 50}, "SystemDisk": {"DiskType": "CLOUD_BASIC", "DiskSize": 50 } }, "DesiredComputeNodeCount": 2 }' --Placement '{"Zone": "ap-guangzhou-2"}'

Sample return

In the following returned value, EnvId indicates the unique ID of a BatchCompute compute environment.
{
    "EnvId": "env-jlatqfkn", 
    "RequestId": "297ed003-7373-4950-9721-242d3d40b3ca"
}

Viewing compute environment list

Sample request

Run the following command to view the list of compute environments:
tccli batch DescribeComputeEnvs --version 2017-03-12

Sample return (some information omitted)

{
    "TotalCount": 1, 
    "ComputeEnvSet": [
        {
            "EnvId": "env-jlatqfkn", 
            "ComputeNodeMetrics": {
                ...
            }, 
            "EnvType": "MANAGED", 
            "DesiredComputeNodeCount": 2, 
            "EnvName": "test compute env", 
            "Placement": {
                ...
            }, 
            "CreateTime": "2019-10-08T08:55:12Z"
        }
    ], 
    "RequestId": "7a1f9338-0118-46bf-b59f-60ace9f154f5"
}

Viewing specified compute environment

Sample request

Run the following command to view a specified compute environment:
tccli batch DescribeComputeEnv --version 2017-03-12 --EnvId env-jlatqfkn

Sample return (some information omitted)

{
    "EnvId": "env-jlatqfkn", 
    "ComputeNodeMetrics": {
        ...
    }, 
    "EnvType": "MANAGED", 
    "DesiredComputeNodeCount": 2, 
    "ComputeNodeSet": [
        ...
    ], 
    "RequestId": "407de39c-1c3d-489e-9a35-5257ae561e87", 
    "Placement": {
        ...
    }, 
    "EnvName": "test compute env", 
    "CreateTime": "2019-10-08T08:55:12Z"
}

Submitting job to specified compute environment

Sample request

Replace related information in the command as needed and run the following command to submit a job to a specified compute environment.
tccli batch SubmitJob --version 2017-03-12  --Job '{"JobName": "test job", "JobDescription": "xxx", "Priority": "1", "Tasks": [{"TaskName": "hello2", "TaskInstanceNum": 1,  "Application": {"DeliveryForm": "LOCAL", "Command": "python -c \\"fib=lambda n:1 if n<=2 else fib(n-1)+fib(n-2); print(fib(20))\\" "}, "EnvId": "to be replaced", "RedirectInfo": {"StdoutRedirectPath": "to be replaced", "StderrRedirectPath":  "to be replaced"} } ] }' --Placement '{"Zone": "ap-guangzhou-2"}'


Sample return

{
    "RequestId": "d6903404-5765-474b-b516-39137456fa5a", 
    "JobId": "job-qjq3mqp7"
}

Terminating compute environment

Sample request

Run the following command to terminate a compute environment:
tccli batch DeleteComputeEnv --version 2017-03-12 --EnvId env-jlatqfkn

Sample return

{
    "RequestId": "029becda-2a4e-4989-aa77-6fbb5a873555"
}
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