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Cloud assistant

Description of differences between cloud assistant command executions and in-instance command executions

This topic mainly describes the differences in command output when you execute commands in Linux-based or Windows-based instances with the cloud assistant and when you execute commands inside the instance.

Linux-based instances

Differences in the output environment variable information

Differences in command execution results

Differences in the completeness of execution result outputs

Difference description

There are differences between the environment variable information output when you execute commands with the cloud assistant and when you execute them inside the instance.

Take the execution of the export command as an example:

Output when executing inside the instance

Output when executing inside the instance

Possible causes

After you log in to the instance via the remote connection software (such as PuTTY and Xshell) or the ECS console remote connection, the system automatically enters an interactive login Shell environment. In this environment, the Shell interpreter (such as, /bin/bash) loads environment configuration and initialization-related startup files (such as /etc/profile, ~/.bash_profile, and ~/.bashrc). These startup files usually contain some environment variables.

When you execute Shell commands with the cloud assistant, the system does not enter an interactive login Shell environment. Therefore, startup files like /etc/profile, ~/.bash_profile, and ~/.bashrc are not loaded. This causes the cloud assistant to fail to obtain or use the environment variables defined in these startup files.

Solution

You can proactively load the required startup files in the cloud assistant.

Create the target cloud assistant command, and add a step to check if the target environment variable exists. For detailed operations, refer to Creating jobs.

tip

Replace the $USER parameter in the command with the actual environment variable.

Replace the /etc/profile file in the command with the actual startup file.

#!/bin/bash

if [ -z "$USER" ]; then
echo "\$USER is unavailable"
source /etc/profile
else
echo "\$USER is available"
fi

export

Sample output:

As shown in the figure, the cloud assistant has returned details about the $USER parameter.

Difference description

After the same command is executed, the output of the cloud assistant is incomplete. For example, execute the command curl -s https://www.randomtext.me/api/lorem/p-1/17000-18000 > lorem.txt && head -c 17408 lorem.txt && rm lorem.txt via cloud assistant and inside the instance, respectively.

Output when executing inside the instance

term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"}]}</script>


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Output when executing inside the instance

<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="profile" href="https://gmpg.org/xfn/11">
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<title>Page not found - Random Text & Name Generator</title>
<meta property="og:locale" content="en_US" />
<meta property="og:title" content="Page not found - Random Text & Name Generator" />
<meta property="og:site_name" content="Random Text & Name Generator" />
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Possible causes

After the cloud assistant executes a command, it outputs a maximum of 16 KB of content, which starts from the last line of the command output and moves backward to the beginning. When the command output exceeds this limit, the cloud assistant can not display the full result.

Solution

If the output size of a command executed via cloud assistant exceeds 16 KB, we recommend that you record the command output in other formats.

Windows-based instances

Difference in NAS mounting

Difference description

In a Windows instance, if you execute the net use L:\\test.nas.com\share command in PowerShell to mount the NAS (Network Attached Storage), you can use the NAS normally after mounting.

However, if you execute the net use K:\\test.nas.com\share command with the cloud assistant to mount the NAS, you can not use it normally after logging in to the instance. Additionally, the NAS will disappear after the instance restarts.

Possible causes

The net use command may run as the System user (a system account). However, the user logs in to the instance remotely as the Administrator user (an admin account) and has no permissions to access the mounted NAS. After the instance restarts, the context (Context) of the cloud assistant Agent, which operates under the System user identity, expires. Therefore, all resources associated with this context are cleared.

Solution

Last updated: 2026.01.26 11:12:36