Thursday, 3 August 2017

Dell Switch - CLI enable authentication failed

When enter Enable mode, show authentication failed

1. Log in to switch via web.
2. Go system > Management Security > Select Authentication.
3. Under Telnet and SSH, change to enableList

Monday, 31 July 2017

Configure DELL EQL Storage Management Network Gateway

1. Log in to storage via SSH (Putty)
2. Enter "grpparams def-mgmt-gateway ipaddress (your gateway)"


GroupName> grpparams def-mgmt-gateway ipaddress

Done !!!


Wednesday, 16 November 2016

Windows cannot verify the digital signature for this file.


Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damage, or that might be malicious software from an unknown source.

Solution 1:
1. Restart computer and boot into Advanced Boot Options.
(For Windows 7 press F8. For Windows 8 and 10, hold the Shift key and press restart)

2. Select Disable Driver Signature Enforcement

Windows 7

Windows 8/10

Wednesday, 9 November 2016

Increasing the disk space for the VMware vCenter Server Appliance in vSphere 6.0

1. Open console from vCenter Server. (You also can use SSH to connect)
2. Press Alt+F1 switch to console mode. (To switch back normal mode, press Alt+F2)
3. Enter username and password.

4. Use command below to enable Bash Shell.
    shell.set --enabled true
5. Use the command below to enter Shell mode.

6. Use the command below to list the disk space
    df -h

Example: If  /dev/mapper/log_vg-log  in low disk space,  I going to increase the disk.

7. Use the command below to list the disk partition.

 Example: log_vg-log is under sde partition.

8. Use the command below to identify the disk controller.

Example: sde in under 0:4 disk controller.

9. Use the vSphere Client or vSphere Web Client to increase the VM disk.
Example: 0:4 disk controller is Hard disk 5. (Hard disk 5 = /dev/mapper/log_vg-log)

 10. Use the command below to extend the newly added disk space.
       vpxd_servicecfg storage lvm autogrow
       If successful, result will show VC_CFG_RESULT=0

 11. Use the command below to check the disk space.
      df -h

Example: /dev/mapper/log_vg-log successful increase to 15GB.

Monday, 21 September 2015

#SCCM 2012R2 - Determine SCCM 2012 CU version

1. Launch registry, navigate HKLM\Software\Microsoft\SMS\Setup
2. On right panel, check on CULevel.

or Power Shell 
  • Get-ItemProperty -Path HKLM:\SOFTWARE\Microsoft\SMS\Setup -Name "CULevel"

CULevel value is (0). Mean no CU installed.

#SCCM 2012R2 - Software Update Point unable to connect WSUS

Error: System.Net.WebException: The request failed with HTTP status 404: Not Found.~~   at Microsoft.UpdateServices.Administration.AdminProxy.CreateUpdateServer(Object[] args)~~   at Microsoft.SystemsManagementServer.WSUS.WSUSServer.ConnectToWSUSServer(String ServerName, Boolean UseSSL, Int32 PortNumber)

Event ID: 6703

1. Verify the WsusPool is Started. (Under Application Pools)

2. Verify WSUS port number correct. 
Default port for WSUS Windows 2012, 8530
Default port for WSUS Windows 2008, 80

Tuesday, 15 September 2015

#Exchange 2013 - Exchange server exist in AD schema

Error: The Exchange Server is in an inconsistent state. Only disaster recovery mode is available. Please use Setup /,:RecoveryServer to recover this Exchange server.

1. Log in to AD. Open ADSI Edit, connect AD with configuration.

2. Navigate to Configuration[Domain name] --> CN=Configuration,DC=Domain name,DC=Domain name --> CN=services --> CN=Microsoft Exchange --> CN=Domain name --> CN=Administrative Groups --> CN=Exchange Administrative Group --> CN=Servers.
3. Delete the exchange server with the error above. (example: CN=DO-EXCH)