VMware Under the Covers

Having a detailed understanding of the directory and file structure, the boot process, important processes, and interaction between VMkernel and Service Console components can greatly aid in the troubleshooting process in the event that ESX Server encounters problems. By understanding the directory structure, one can know where to locate files critical to the function of ESX Server and understand the general purpose of those directories. Knowing where configuration files are and which ones to edit if needed to reconfigure the server is a very important component for managing both the virtual server and virtual infrastructure in an efficient manner. Such information allows reconfiguring the service console IP, default gateway, DNS server, hostname, default boot timeout settings if and when they’re needed. Understanding the relationship between the Service Console processes and VMkernel services helps in locating the running VM's processes and view real-time performance data for specific VMs on the Service Console. Understanding the interaction among all of these components is critical to troubleshoot the virtual environment.