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eSight V300R010C00SPC200, 300, and 500 Operation Guide 09

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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).
Server Stateless Computing Management Introduction

Server Stateless Computing Management Introduction

The stateless computing function separates server hardware from hardware attributes to automatically deploy and replace servers and migrate services. The V300R010C00SPC500 version does not support this function. The V300R010C00SPC500 version having a patch version later than V300R010C00SPC500 installed also does not support this function.

Definition

The stateless computing function separates server hardware from hardware attributes to automatically deploy and replace servers and migrate services.

Stateless computing does not require server reconfiguration, making computing stateless and enabling plug-and-play.

Benefits

When faults occur on servers, eSight automatically migrates server services for service recovery based on templates and administrator configurations. This improves O&M efficiency and reduces O&M costs.

Application Scenario

The application scenarios of server stateless computing are as follows:

  • Offline configuration

    When a device is to be added, configure a profile and associate it with the target slot, and install the device into the slot. Then the stateless computing function automatically delivers the pre-configuration to the device. The configuration takes effect immediately after the device is powered on, eliminating the need to configure the device.

  • Configuration migration

    When a device in use fails, O&M personnel can migrate the profile on the device to a standby device. Then the standby device inherits all features of the failed device.

  • Device replacement

    When a device in use fails, O&M personnel can migrate the profile on the device to a newly installed device.

Function

Stateless computing enables fast server hardware configuration replacement and automatic service migration.

Stateless computing implements the following functions:

  • Domain management

    Administrators can quickly associate stateless computing servers with profiles or group profiles.

  • Configuration item management

    Administrators can configure pools, adapters, BIOS policies, and VLAN groups to implement unified hardware configuration for stateless computing servers.

  • Profile management

    Administrators can configure different combinations of pools, adapters, and BIOS policies in profiles or group profiles, and use the profiles or group profiles to implement fast configuration and deployment for new servers.

  • Automatic migration management

    Automatic migration separates server hardware from its configuration, automatically migrates the configuration to a new server, and activates the new server to run services, ensuring service continuity.

Principle

The server stateless computing networking mode is the fully out-of-band networking. Table 9-30 describes the networking mode.
Table 9-30 Networking mode description

Networking Mode

Communication Mode

Description

Fully out-of-band

The eSight server communicates with management IP addresses of servers.

Servers use the management IP address to connect to eSight.

Fully out-of-band deployment is to perform stateless computing on devices using the small operating system automatically mounted by eSight.

In fully out-of-band networking mode, eSight automatically mounts a small operating system to the virtual drive of a device. When the device boots from the operating system, eSight sends iBMC instructions to the device for device configuration.

NOTE:
  • The IP address must be valid for the device to connect to eSight.
  • The user must have permission on the IPMI protocol for a device to connect to eSight.
  • The version of the iBMC must be 2.56 or later.
Figure 9-14 shows the working principle of fully out-of-band stateless computing.
Figure 9-14 Working principle flowchart

Table 9-31 Working principle description

No.

Description

1

An administrator associates a device with a profile on eSight.

2

The profile task triggers the server to send a power-on request to eSight.

3

The administrator triggers the profile activation task. eSight automatically mounts a small operating system to the server virtual drive and delivers a power-on permit command.

4

eSight sends the SFTP information and profile file path to the iBMC. Then the iBMC forwards them to the small operating system.

5

The small operating system downloads the profile file from eSight.

6

The small operating system configures information based on the profile file and sends the configuration result to eSight.

7

The administrator views the profile activation result on eSight.

Application Restrictions

Restrictions When Southbound and Northbound Services Are Isolated

The network for isolating the southbound and northbound services is not applicable to the eSight multi-subnet scenario.

Southbound and northbound service isolation means that the southbound and northbound IP addresses of eSight are isolated. The northbound IP address is used to log in to the eSight UI, and the southbound IP address is used to communicate with servers.

  • Scenario where the southbound and northbound services are not isolated

    Multiple NICs on the eSight server can communicate with the servers.

    The out-of-band and fully out-of-band networking modes are supported.

  • Scenario where the southbound and northbound services are isolated

    Only one NIC on the eSight server can communicate with the servers.

    • The management plane IP address and the service plane IP address of the server are on the same plane.

      The out-of-band and fully out-of-band networking modes are supported.

    • The management plane IP address and the service plane IP address of the server are on different planes.

      Only the out-of-band and fully out-of-band networking modes are supported.

Restrictions on Stateless Computing

Application restrictions on stateless computing are as follows:

  • This function applies only to Huawei rack, blade, and high-density servers.
  • After configuring stateless computing for a server, you must manually back up the configuration immediately. Otherwise, if the backup data before the configuration is used for recovery, information between eSight and the server is inconsistent, the profile is repeatedly allocated, or configuration conflicts occur on the device. As a result, services are affected.
  • Server restart will occur during domain activation, profile association, group profile association, splitting or deletion of devices associated with profiles, deletion of domains containing associated profiles, automatic configuration migration, manual configuration migration, and profile exporting from devices. As a result, services are interrupted.
  • For details about servers and cards supported by stateless computing, see the eSight Supported Features.
    NOTE:
    • When the stateless computing function is used, it is recommended that the database be automatically and periodically backed up or manually backed up to prevent data loss.
    • For CX920 switch modules, the downlink Fabric plane supports MZ710 NICs and the Base plane supports LOM NICs.

Availability

License Support

N/A

Component Dependency

N/A

Compatible Product Versions

For details, see Supported Server Specifications in the eSight Supported Features.

Key Parameters

N/A

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Updated: 2019-09-12

Document ID: EDOC1100044378

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