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

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LiteAD Troubleshooting

LiteAD Troubleshooting

DHCP Server Failure

Symptom

User virtual machines (VMs) cannot obtain IP addresses and therefore cannot be used. So you can not log into the VM.

Possible Causes

User virtual machines (VMs) cannot obtain IP addresses and therefore cannot be used.

Fault Diagnosis

Figure 2-54 shows the process for rectifying this fault.

Figure 2-54 Process for rectifying this fault
Procedure
  1. Rectify the network and service faults for the DHCP server.

    1. Log in to the active IT Adapter (ITA) server using a root account.
    2. Run the ping Service plane IP address for the DHCP server command to check whether the IP address is successfully pinged.
      • If yes, go to 1.f.
      • If no, go to 1.c.
    3. Locate and rectify the network fault.
    4. Locate and rectify DHCP configuration problems.

      The common problems are as follows:

      • There is no idle IP address in the IP address pool.
      • The DHCP server IP address in the subnet configuration is incorrect.
    5. Check whether you can create VMs on the FusionManager user interface (UI).
      • If yes, no further action is required.
      • If no, go to 1.f.
    6. Log in to the LiteAD server using a root account.
    7. Run the service dhcpd status
    8. Check whether the DHCP Server service is in the Running state, as shown in Figure 2-55.
      Figure 2-55 Checking the status of the DHCP Server service
    9. Run the startTools, choose Software > LiteAD > Configure LiteAD > Configure DHCP Service, as shown in Figure 2-56.
      Figure 2-56 Configure DHCP Service
    10. Set the following parameters as planned:
      • Start IP
      • End IP
      • Gateway IP
      • Mask Length
    11. Check whether you can create VMs on the FusionManager user interface (UI).
      • If yes, no further action is required.
      • If no, go to 1.l.
    12. Log in to the FusionCompute as user geadmin.
    13. Restart the DHCP server on the FusionCompute user interface (UI).
    14. Check whether you can create VMs on the FusionManager UI.
      • If yes, no further action is required.
      • If no, go to 2.a.

  2. Reinstall the system to recover the DHCP server.

    1. Reinstall the system to recover the DHCP server.
    2. Check whether you can create VMs on the FusionManager UI.

Related Information

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Updated: 2019-04-25

Document ID: EDOC1100010651

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