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VMware has announced the next generation of vSphere yesterday. Besides lots of new features, vSphere 5 also comes with a new licensing structure. For every licensed physical CPU, you get a certain amount of vRAM, which you will be able to allocate to virtual machine. Only the running VM’s [...]
Using Memory Limits in vmware vSphere can cause severe performance issues. The guest operating system assumes it can use all of the allocated memory, but vSphere will make sure the vm cannot use more than the memory limit. It does this by inflating a memory balloon using the balloon [...]
Configuring a syslog folder is convenient for troubleshooting ESXi. But it’s a pain you-know-where to configure manually across all your ESXi servers. Luckily, PowerCLI can help out. This script creates a folder on the local datastore and configures ESXi to write the syslog in that folder.
Enjoy!
Hugo
Determining the LUN ID for a specific LUN in your VMware Infrastructure used to be simple. It was listed as one of the properties of the datastore you selected in the VI Client. Nowadays, more often than not, I dont see the LUN ID in the vSphere Client. Instead, I see [...]
Do you get these events in your system log?
The service cannot be started, either because it is disabled or because it has no enabled devices associated with it. attempting to start the service ntmssvc with arguments “-Service” in order to run the server:
{D61A27C6-8F53-11D0-BFA0-00A024151983}
Symantec explains this is caused by disabling the [...]
Wow, vSphere vCenter Server has a lot of new alarms! Great for monitoring your environment. But a pain when it comes to documenting it. Thank God VMware for the PowerCLI! Just a few lines of code can do the documentation for you.
Here’s how:
The following script is a request from David Gontie, who was kind enough to comment on a previous post.
He’d like to add the location of his vm’s to a custom field. This is especially handy if you store all the files for a vm in a single datastore.
Here you go David:
Snapshots are m*th3rfcukers. If you’re not careful, they will mass-murder your vms. Yet they allow you to time-travel! You want to use them, but how to prevent a massacre? Here’s how: relocate the delta files.
When you create a snapshot, the current state of the vm is preserved by leaving the disk files alone. All changes [...]
Built-in cmdlets usually offer the -Confirm parameter whenever you need user confirmation. When writing your own scripts, you might want to ask the eventual user of the script for confirmation yourself. This handy little function (store it in your profile!) allows you to ask for confirmation whenever, where-ever. (Try not to bug your users too [...]
WARNING: VMware vmotion does not check wether there are sufficient ports available on the virtual switch on the destination host. Migrating a vm to a host with insufficient ports will cause the vmotion to complete without warnings, yet the virtual NIC will be disconnected! This issue is descripbed in this KB article.
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