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FusionAccess V100R006C20 Cloud Classroom Solution Product Documentation 10 (Single-Classroom Scenarios)

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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).
Powering On and Off the System

Powering On and Off the System

Powering Off the System

Scenario

This section describes how to power off the system during off-peak hours (for example, during holidays) or when the uninterruptible power supply (UPS) cannot provide sufficient power supply to perform planned maintenance, thereby minimizing the impact on services.

Impacts on the System

All the services will be interrupted after the system is powered off.

Prerequisites
  • A PC is ready and connected to a server.
  • You have obtained the account and password for logging in to FusionCompute.
  • You have obtained the account and password for logging in to FusionAccess.
  • No alarms exist on the Alarm > System Alarm page. If alarms exist, clear them based on the alarm help.
Procedure

Shutting down user VMs

  1. Log in to FusionAccess.
  2. Click Desktop.
  3. On the All Computers page, select all user VMs and shut them down.

    Before shutting down user VMs, obtain formal authorization in written or email form from users to avoid user complaints.

Shutting down infrastructure VMs

  1. Log in to FusionCompute.
  2. Choose VM and Template and click the VM tab.
  3. Shut down all infrastructure VMs of FusionAccess in the following sequence by click Stop in the Operation column.

    There are no forcible requirements for the shutdown sequence of infrastructure VMs in the FusionAccess system. To ensure security, shut down the infrastructure VMs in the following sequence:

    • TCM
    • ITA/GaussDB/HDC/WI/License/vAG/vLB/LiteAD

  4. Ensure that all the infrastructure VMs have been shut down.
  5. Power off the virtualization platform.
  6. Use PuTTY to log in to the CNA as user gandalf by using the management IP address.
  7. Run the following command to switch to user root:

    su - root

  1. Run the following command to disable user logout upon system timeout:

    TMOUT=0

  2. Run the following command to power off the host carrying the VRM VM:

    shutdown -h now

Powering off the cabinet

NOTE:

Do not disconnect the power distribution unit (PDU) if the server blade is not powered off and the power indicator on the blade is still on.

  1. Set the power switches of other devices, such as switches and storage devices, in the cabinet to OFF.
  2. Turn off the power switch on the PDU in the cabinet.

    The system is powered off.

Powering On the System

Scenario

This section describes how to power on the system to restore services after completing power-off maintenance.

Impacts on the System

All services run properly after the system is powered on.

Prerequisites
  • A PC is ready and connected to a server.
  • You have obtained the account and password for logging in to FusionCompute.
  • The hardware system has been powered on.
Procedure

Powering on the virtualization platform

  1. Power on the cabinet.

    • Set the cabinet PDU switch to ON to connect the cabinet to the power supply.
    • Set the alternating current (AC) power switch to ON.

  1. Power on FusionCompute.

    Power on the servers where the management VMs reside.

    NOTE:

    After the hosts carrying the VRM VMs are powered on, the VRM VMs automatically start.

  1. Power on the hosts.
  2. Log in to FusionCompute after the VRM VMs start.

Starting infrastructure VMs

  1. On FusionCompute, choose VM and Template > VM.
  2. Locate the row that contains the target VM and click Start, A dialog box is displayed.

    There are no forcible requirements for the startup sequence of infrastructure VMs in the FusionAccess system. To ensure security, start the infrastructure VMs in the following sequence:

    • ITA/GaussDB/HDC/WI/License/vAG/vLB/LiteAD
    • TCM

  3. Click OK twice.
  4. Ensure that all the infrastructure VMs are in the Running state.

    NOTE:

    Desktop cloud services are restored after all infrastructure VMs start, which takes about 15 minutes.

Starting user VMs

  1. There is no need to start user VMs. When a user clicks a user VM on the WI login page, the user VM automatically starts.
Verification
  1. Log in to a user VM through the WI.
  2. Check alarms on the virtualization platform.

    On FusionCompute, click Monitoring > Alarm > Real-Time Alarms to check new alarms.

  3. On FusionAccess, choose Alarm > System Alarm. Check whether alarms exist in the system. If alarms exist, handle them according to the alarm help.

Handling Power Interruptions

If a power interruption occurs, the server switches to the UPS. If the power is not recovered in 10 minutes, you are advised to power off the system by referring to Powering Off the System to prevent the power failure of the physical server due to UPS power exhaustion, thereby prolonging the service life of the UPS.

Powering Off the System When No PC Is Available for System Power-Off

Scenario

This section describes how to power off the system when no PC is available for system power-off.

This method ensures normal power-off of only certain components. Certain components may be powered off abnormally, which causes system exceptions. Therefore, exercise caution when using this method.

Procedure
  1. Power off an RH2288H V3 server.

    Holding down the power button of a server for a long time forcibly powers off the server, which may cause system service exceptions. For this reason, do not power off a server by holding down the power button for a long time.

  1. Power off the UPS.
  2. Turn off the power.

Powering On the System When No PC Is Available for System Power-On

Scenario

This section describes how to power on the system when no PC is available for system power-on.

Prerequisites

You have obtained the account and password for logging in to FusionCompute.

Procedure
  1. Switch on the power.
  2. Start the UPS and wait until the RH2288H V3 server is automatically powered on.
  3. Log in to FusionCompute.
  4. Click VM and Template.
  5. In the navigation tree on the left, locate the teacher's VM name created in 3.2.8.8-12 and click the name.
  6. Click Start in the Operation column to start the teacher's VM.
  7. Power on the students' TCs and start HDPClient.

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Updated: 2019-04-25

Document ID: EDOC1100010651

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