VMware
What is VMware HA and how does it work?
VMware HA is a feature which is available in vCenter to provide highly available virtual machines.
It allows virtual machines and the application(s) running inside them to gain a level of high availability that may otherwise have no failover option.
In the event of a physical ESX/ESXi server any virtual machines running are restarted on another physical server.
List all VMkernel NICS:
/usr/sbin/esxcfg-vmknic -l
Interface Port Group IP Address Netmask Broadcast MAC Address MTU TSO MSS Enabled
vmk0 VMkernel 192.168.5.5 255.255.255.0 192.168.5.255 00:51:47:3c:20:cc 1500 40960 true
When you create a snapshot it takes a copy of the virtual machine config file (.vmx), and then creates the disk snapshot files.
.vmx Virtual machine configuration
.vmdk Virtual disk
-flat-vmdk Disk that contains the data
Maintenance mode can get stuck at 2% progress when there are still active VMs running on that ESX host. An ESX or ESXi Server will not complete going into maintenance mode until there are no running VMs running on it.
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Disclaimer
All advice, installation/configuration how to guides, troubleshooting and other information on this website are provided as-is with no warranty or guarantee. Whilst the information provided is correct to the best of my knowledge, I am not reponsible for any issues that may arise using this information, and you do so at your own risk. As always before performing anything; check, double check, test and always ensure you have a backup.