ESXi

Feb 281 min read

VM HA Restart

We all know that in the BAU world, unexpected issues happen at any time. I find this script very helpful in our environment. I want to...

Dec 12, 20222 min read

ESXi issue Failed to sync with the vCenter Agent on the host

We had this issue when suddenly the ESXi network connectivity went out. The ESXi is still up in the console but after testing the...

Jun 27, 20223 min read

Calculating Maximum CPU Reservation that can assign to the VM With 6 CPU's

I encounter this issue during the replacement of our old blade server. I just want to share the troubleshooting steps I did to justify...

Jun 20, 20222 min read

How to Install/Update and Remove/Uninstall VIB on VMware ESXi

Prerequisites: - Determine whether the update requires the host to be in maintenance mode or to be rebooted. If necessary, place the host...

Jun 13, 20222 min read

Fetch Network/Storage firmware and driver version of ESXi

This article provides steps for determining the driver and firmware versions for Host Bus Adapters (HBA) and physical network interface...

Jun 1, 20221 min read

Upgrading the ESXi 6.5 to 7.x

Detailed upgrade path and recommendations can be found in https://core.vmware.com/ Note: Back in Time Upgrade is not supported. You can...

May 27, 20221 min read

SQL Server detected a logical consistency-based I/O error when VM is running on snapshot

We have SQL Servers getting Errors 823/824 and we found out that there is bug in ESXi 7.x U2 Note: Error Crashes with Data corruption...

Apr 30, 20222 min read

VMware ESXi Installation and Setup

First of all check your physical box if supported through VMware Hardware Compatibility Guide https://www.vmware.com/resources/compatibil...

Apr 25, 20222 min read

Backup and Restore ESXi host configuration in PowerCLI

Steps to Backup the ESXi Configuration: - Login ESXi via PowerCLI - Run Connect-VIServer -Server 192.168.119.129 and Specify the...

Apr 17, 20221 min read

Troubleshoot multiple VM servers unexpected reboot - HA trigger the VM restart

To determining if your VMware vSphere HA cluster has experienced a host failure Steps: - Collect one of the ESXi VMkernel coredumps - ...

Apr 14, 20221 min read

Captured VM Server Packet Loss via shell

Steps: - To List the VM Network and get the World ID - Run esxcli network vm list - To get the Port ID we need to list the World ID - Run...

Apr 12, 20222 min read

Capture traffic that flows through ESXi NIC and capture traffic that goes inside the virtual machine

Note: In vSphere 6.5 and earlier, specify the direction of traffic using --dir 0 for inbound and --dir 1 for outbound. You can’t specify...

Apr 5, 20221 min read

How to get the total CPU capacity of ESXi that can be use in VM servers

This is the CPU Computation: - In this scenario you have below ESXi 2 Sockets and 14 Cores Total of 28 CPUs or Logical Processors - You...

Mar 29, 20221 min read

Steps: - Make sure DCUI / ESXi Shell / SSH service are running ( Login to WebClient to check the services status ) - Login root using...

Mar 29, 20221 min read

To Analysed ZDUMP POSD ( Purple Screen of Death ) for ESXi

Steps: - Login through SSH ( User Putty ) as a root - Now to locate the VMkernel zdump go to cd/var/core - Type ls -al or ls -ltr to...

Mar 29, 20221 min read

To Check ESXi Logs through Web Client

Steps: - Browse ESXi FQDN or IP and surf to your preferred browser https://ESXi.vmware.test/host - Login as a root in SSH - After login...