Troubleshooting a virtual environment

From my perspective, GUI tools are not the ideal tools to use for TRBL. You will mostly stick with the logs and CLI commands to dig down into your environment if something goes wrong.

Although some GUI tools might be handy, such as vRealize Operations or vRealize Log Insight (discussed in the previous chapter), we will focus on the CLI tools for troubleshooting.

CLI tools

The CLI is the most useful option for TRBL. There are a lot of CLIs available that are used for TRBL in a VMware environment:

• vSphere ESXi shell: esxcli, which is the new CLI
• vSphere command-line interface vCLI: esxcfg-*, which is the old CLI

Both CLIs can be used directly from an ESXi host, and the ESXi shell must...