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eSight V300R010C00 Operation Guide 07

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Host Management

Host Management

This topic describes how to resolve issues that may occur during host management by using the eSight.

When Will the Paths Between Hosts and Storage Systems Be Displayed in a Cloud Chart in the Host Path Diagram


When hosts are mapped to storage systems, the paths are clearly displayed between the hosts and storage systems in the host path diagram. When only hosts and storage systems are displayed and the paths are displayed as a cloud chart, the following may occur.

  • Switches that connect hosts to storage systems are not connected to eSight, so eSight cannot obtain the switch information.
  • Initiators are not added to logical hosts, and these hosts belong to the default host group to which LUNs have been mapped. eSight cannot match initiators and therefore cannot display accurate paths.

How Can I Manually Install the lftp Tool of the Agent Software Package


The lftp tool must be used to remotely download the new HostAgent installation package from the eSight during agent upgrade. For this reason, check and install the lftp tool before upgrading an agent.

  1. Check whether the lftp tool has been installed.

    Run the rpm –qa | grep lftp command to check whether the lftp tool has been installed.

    If the tool has not been installed, the following information is displayed:

  2. Obtain the lftp software package from the ISO file of the operating system or the lftp official website.
  3. Run the rpm –ivh *.rpm command to install the lftp software package, where * indicates the package name,

    for example, rpm -ivh lftp-4.3.3-1.el4.rfx.x86_64.rpm.

  4. Start the agent upgrade after the tool is installed.

How Do I Do If Some Host Data Fails to Be Collected When the Collection Period Is Short


When the collection period is short, some host data fails to be collected.

Possible Causes

The configured collection period does not meet the requirements.

Fault Diagnosis


  1. Set the host performance collection task based on the following table.


    Host Quantity

    Collection Period

    High configuration

    • CPU: 8-core, 2.5 GHz or higher
    • Memory: 32 GB or larger

    1000 ≤ Host quantity ≤ 2000

    One hour or longer

    500 ≤ Host quantity < 1000

    30 minutes or longer

    Host quantity < 500

    15 minutes or longer

    Standard configuration

    • CPU: 4-core, 2.5 GHz or higher
    • Memory: 8 GB or higher

    200 ≤ Host quantity < 500

    30 minutes or longer

    Host quantity < 200

    15 minutes or longer

How Do I Do If Hosts Fail to Be Discovered in Agent Mode


When eSight discovers hosts in agent mode, a message is displayed, indicating that the hosts fail to be discovered.

Possible Causes

The host time is not the current time or is earlier than the certificate generation time (2014-07-18). As a result, certificate authentication fails when eSight communicates with the host using HTTPS.

Fault Diagnosis

Log in to the host and check whether the host time is the current time.

In the Linux operating system, run the date command after login to check the current time of the host.

  1. Run the date -s year/month/day command on the Linux operating system to set the host time.

Failed to Upgrade an Agent


An agent is installed on a host that runs Linux. When the agent is upgraded, the system prompts a message:

Failed to download new package.
Possible Causes

The lftp software is not installed or incorrectly installed.

Fault Diagnosis

Log in to the Linux host where the agent is deployed, run the following commands to check whether the lftp software is installed: rpm -qa | grep lftp.


The lftp software is uninstalled in the Linux host if the interface display is null.

  1. Install the lftp software that is compatible with the current operating system.
Updated: 2019-06-30

Document ID: EDOC1100044378

Views: 58643

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