There are a number of objectives relating to PowerCLI on the VCAP-DCA blueprint, some of which I have covered, here and here. I have also given PowerCLI examples as an…
This will be a short post, as I don’t want to cover ground I’ve recently written about, but as this is one of the VCAP-DCA objectives, I still wanted to…
When using esxtop or resxtop to troubleshoot a perceived networking issue, look out for dropped packets. Dropped transmit or received packets indicate that either the destination for the packets is…
It is important that name resolution is configured correctly on your ESXi hosts, as it is important for many vSphere features. Your hosts and vCenter servers should be able to…
VMkernel interfaces are used for a number of functions, such as management traffic, vMotion, Fault Tolerance logging, iSCSI and NFS. VMkernel interfaces are given the name ‘vmkx’, where X is…
To troubleshoot networking configurations from the ESXi command line, ESXCLI is the tool to use. This post will focus on looking at the options available using the network namespace of…
The net-dvs command can be used to display information about the vSphere Distributed Switch (dvSwitch) configuration, which can be useful in troubleshooting situations. A typical example of where it can…
If it has been determined that a virtual machine requires additional CPU or Memory resources in order to perform effectively, then Hot Add can be used to increase the VM’s…
Excessive memory consumption can cause performance issues for hosts and virtual machines. When a host is under pressure in terms of available physical memory, it may have to begin swapping…
I have previously written about analyzing host and virtual machine performance using esxtop. This post will continue to look at how this information can help with troubleshooting performance, and what…