To start off with, Download the latest version of CentOs7 from https://www.centos.org/download/ At the time of writing, this is: CentOS-7 (1804) Lets start by creating a new Virtual machine. I will select Esxi 6.5 for backward compatibility with other host. Mount the ISO, Power on the VM and begin installing of the OS and begin the installation […]
Generate a memory dump for a frozen VMware, windows virtual machine.
Enable complete memory dump feature by changing following registry keys: Enable keyboard crash dump feature by adding following registry keys: Enable NMI crash dump feature by adding following key: Restart Server to take effects. Do a memory dump test with below steps: Capture a kernel memory dump in following ways: o Send NMI to Guest […]
Statement diagnostic data from driver is XX002:0:7:ERROR: index “pk_index_name” contains corrupted page at block xxxx;
Resolution: Take a snapshot of the vcsa Export affected table: Recreate constrain
Resume VC upgrade from a failed upgrade using exported data
as long as we have the export directory, we should be able to invoke the installer to perform the install with the exported data
remount Esxi boot bank
In certain scenario when Esxi’s local/alt boot bank/ boot volume goes offline (symlinks broken),if the boot device is available, it needs to be remounted via CLI To remount bootbank, run the below command. To determine if the boot device is available, run through the below: Determining the boot volume: If the symlnks to the UUID […]
adding VCSA to domain renames the dns suffix to the domain.
The other day, I had a customer having all management applications on a different DNS suffux as that of the domain. Ie: Domain : ntitta.in Management host’s: on mgmt.local on the customer’s setup, the VCSA was deployed with an FQDN VCSA.MGMT.local However, when the appliance was added to domain ntitta.in, the VCSA renames itself to […]
VCSA/VCHA 6.x network configuration file
Below is created by VCHA configuration and is sometimes set to DHCP when VCHA is broken. The file can be removed safely and restart the appliance before re-configuring VCHA.
Esxi Root password lock out/ Determining source of last failed ssh login on Esxi
Generally. Should the root account be locked out, SSH and UI/client access to the host fails. In order to work this around Bring up a Console session to the Host and enable Esxi Shell (under troubleshooting options) on the console session, press ALT+F1, log in as root and password: In order to unlock the root […]
migrate option grayed out for VM’s on the vCenter view
the migrate option is normal grayed out when there is an ongoing task (clone, backup, snapshot take/consolidate/reconfigure etc) running against the VM) In certain rare cases, an orphaned DB record could also cause this. From the vCenter server database, Look at the table VPX_DISABLED_METHODS IF there are no such task’s and should you find this to […]
VMware Power CLI: Could not establish trust relationship for the SSL/TLS secure channel with authority
With the Newer version of Power CLI, the Connect-ViServer fails with message: This can easily be worked around by Importing The VMCA trusted root Certificate Use Set-PowerCLIConfiguration to ignore certs Importing The VMCA trusted root Certificate to windows Trusted Root Store Launch a browser and head to https://vcenter.FQDN (or https://vc.FQDN/certs/download.zip) Click on Download trusted root CA certificates Extract […]