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eSight V300R009C00 Operation Guide 10

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Host Management

Host Management

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

Question

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.

Answer

  • 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

Question

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.

Answer

  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 Can I Troubleshoot a Host Detection Failure When Multiple IP Addresses Are Configured on a Single Network Adapter of a Windows-based Host

Symptom

A single network adapter is configured for a Windows-based host. This network adapter has multiple IP addresses. The Windows-based host can be pinged but cannot be detected on the interface of the eSight.

Possible Causes

When multiple IP addresses are configured, the Windows operating system uses its algorithm to add a route. The IP route that is automatically generated sends the communication packets between the host and eSight to the other IP address. As a result, the host fails to be detected.

Fault Diagnosis

Add a static route and determine the next default gateway of packets on different network segments.

Procedure

  1. The 192.168.187.150 IP address is used as an example. Use the default gateway for the communication between the host and eSight, as shown in Figure 10-50.

    Figure 10-50 Using the default gateway for the communication between the host and eSight

  2. Go to the CLI and run the route delete command to delete the dynamic route from the dynamic route table, as shown in Figure 10-51.

    Figure 10-51 Deleting the default gateway

How Can I Troubleshoot the Part Hosts Performance Data is Failure When the Collection Period is Short

Symptom

If the collection period is short, the system cannot collect the part hosts performance data of the hosts.

Possible Causes

The collection period is too short.

Fault Diagnosis

None

Procedure

  1. Configure the host performance data collection tasks as described in the following table.

    Scenario

    Number of Hosts

    Collection Period

    High configuration

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

    1000 ≤ Number of hosts ≤ 2000

    1 hour or longer

    500 ≤ Number of hosts < 1000

    30 minutes or longer

    Number of hosts < 500

    15 minutes or longer

    Standard configuration

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

    200 ≤ Number of hosts ≤ 500

    30 minutes or longer

    Number of hosts < 200

    15 minutes or longer

    NOTE:

    For Windows operating systems, the performance data of network ports cannot be collected in network port binding scenarios, and the packet per second (pps) indicator cannot be collected for the bonded ports.

How Can I Troubleshoot a Host Fails to Be Discovered Using an Agent

Symptom

When an agent is used to discovered a host, a message is displayed indicating that the host fails to be discovered.

Possible Causes

The host time is different from the current time or earlier than the time when the certificate is generated (2014-07-18). As a result, the certificate verification fails when the eSight communicates with the host through the HTTPS.

Fault Diagnosis

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

  • In Windows, log in to the host, start the CLI, and run the date command to check the host time.
  • In Linux, log in to the host and run the date command to check the host time.

Procedure

  1. Setting host time in Windows: On the CLI, run the date command, type the current time in the correct format, and press Enter; Setting host time in Linux: Run the date -s year/month/day command to modify the host time.

Failed to Upgrade an Agent

Symptom

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.

NOTE:

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

Procedure

  1. Install the lftp software that is compatible with the current operating system.
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Updated: 2019-09-07

Document ID: EDOC1100011877

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