recovering from an unresponsive hostd after a datastore/storage goes PDL

Hostd crashes with the below: Scsi Decoder: Link In my case, The volume appeared to have gone offline because the host was aborting the commands to the HBA. This shows that hostd still appears to be stuck as running in a zombie state. To resolve this, we will need to reset scsi commands to vmhba32 […]

joining Esxi to domain fails with LW_ERROR_INVALID_MESSAGE [code 0x00009c46]

Joining Esxi to doamin fails with the below message: Cat /etc/hosts show below: In some cases, the hostname on the /etc/hosts file might not match to that of the host.  (look for the message on domainjoin-join “With Computer DNS Name: esx.” In order to sort this out,  correct the /etc/host file (in my case, I […]

Creating a Cent OS7 template for VMware Guest Customization and Deployment

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 […]

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 : ikigo.net 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 ikigo.net, the VCSA renames itself to […]

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 […]