Category Archives: Virtualization

VMware : Basic ESXi commands

You will find below some basic and useful commands to operate a ESXi hypervisor from the command line. Put the host in maintenance mode (or leave maintenance mode) :

List all VMs registered on the host :

Verify the power state of a specific VM :

Power on a specific VM :… Read More »

VMware : vCenter version and build number history

Here is a list below of version and build number for VMware vCenter Server product. I have no credit over it, it has been taken from Web site. Name Version Release Build Installer Version vCenter Server 6.0.0 Update 2 6.0 U2 2016-03-15 3634793 3634788 VMware vCenter Server 6.0 Update 1b 6.0 U1b 2016-01-7 3339083 3343019… Read More »

VMware : Power on virtual machine cannot be found

I have encountered the following issue lately trying to power on a virtual machine with a limited permission user using the vSphere Web Client : The “Power on virtual machine” operation failed for the entity with the following error message. Virtual machine cannot be found. This happened with a regular user with the appropriate role… Read More »

VMware : Call “HostFirewallSystem.UpdateRuleset” for object “firewallSystem” on ESXi failed

Having the following error trying to apply IP restriction in the ESXi firewall using the vSphere client? Call “HostFirewallSystem.UpdateRuleset” for object “firewallSystem” on ESXi “” failed. Operation failed, diagnostics report: Sysinfo error on operation returned status : Already exists. Please see the VMkernel log for detailed error information This behaviour can happen under the following… Read More »

VMware : PCPU 3 locked up. Failed to ack TLB invalidate.

The following error is usually represented by a “pink screen of death” with the following output : PCPU 0 locked up. Failed to ack TLB invalidate. @BlueScreen: PCPU 0 locked up. Failed to ack TLB invalidate. NMI IPI received. Was eip(base):ebp:cs [0x76a42(0x41802f800000):0x412520x4010](Src 0x1, CPU2 The cause is that when interrupt occur, a context switch must… Read More »