Tag: PowerCLI
PowerCLI Script to Check Host Over-commitment Percentage & Ratios
At my previous employer, we had a Dev/QA vSphere environment that was very over provisioned. The environment had lots of CPUReady issues with VMs having to wait for CPU time, which caused things to be slow, etc. We knew this but the application teams didn’t understand. I ended up writing a PowerCLI script to check the CPU overcommitment and sent…
Script to backup your vCenter DRS Rules
I was thinking yesterday, I have a script that I run on a monthly basis to backup my vDS configs… Shouldn’t I also have something that does the same for my DRS rules? So, I wrote a script that I can schedule to run on a weekly/monthly basis to backup my DRS rules. I have multiple vCenter servers, so I…
PowerCLI Script to create new vDS Portgroups
We deployed new hosts into one of our office locations. Because these hosts would have different number of uplinks as well as use a LAG group instead of normal dvUplinks, we decided to create a new vDS Switch. Then, we needed to re-create all the portgroups as well. I figured, instead of manually adding 15-20 portgroups, I’ll automate it. I…
Disabling FCOE on vSphere 10gb NICs per VMware KB 2130092
So, we recently had an issue with some of our Dell blade vSphere hosts. Seems they all crashed (PSOD) at the same time (6 nodes across 2 different clusters). After submitting the log bundles and Dell TSRs, support recommended, along with upgrading drivers & firmware (the support go to!) that we remove FCoE from the NICs (as it’s not being…
Creating shortcuts for PowerCLI that automatically log you in.
So, I started a new job a couple of months ago and we have multiple vCenter environments. My friend & temporary co-worker, Brian Spagna (@bspagna) and I both wanted to have shortcuts to launch PowerCLI windows and have a different background color for each to easily identify which environment we were in. We thought it would be cool to have…
What do you do when a path to a NFS Datastore goes down?
My QA environment uses Isilon as it’s backend storage platform. The Isilon share is one large storage volume that is setup with different paths (IPs) to the storage. This environment has 6 datastores (6 paths). The other day, we had one of those paths go down, taking down approx 75 VMs with it. I debated attempting to remove the down…
Patching VMware ESXi Hosts via PowerCLI!
*** Updated 5/17/2017 – See below *** This year, I’m trying something new… Anything that I have to do more than 2-3 times, I’m going to attempt to automate it! In keeping with this mantra, I recently had a task come across my plate to patch the 20+ ESXi Hosts in one of my production environments. Along with installing the…
Display list of Multiple vCenter Servers to connect to in your PowerCLI Scripts
If you’re company anything like mine, you probably have multiple vCenter servers in your environment. They may be linked, they may not. In my environment, we have 4 vCenter servers we consider Production, even though one is for QA, and we have a lab environment. Normally, I just connect to vCenter manually in PowerCLI before I run a command/script to…
Migrating Roles & Privileges from an old vCenter to a new vCenter using PowerCLI
So we’re finally upgrading an old environment running vCenter 4.0 to a new vCenter running 5.5. Instead of attempting an upgrade, we’re building new. As it’s a new build, we had to find a way to migrate the roles & privileges to the new vCenter. I have done this in the past utilizing the “Cheap Disaster Recovery” scripts from Gabe’s…
Place a vSphere Host into Maintenance Mode via PowerCLI
So, we had two different vSphere hosts, in two different environments, have hardware faults this week. One had a bad memory module, and the other a bad FAN. As I launched the VI client for each environment and placed the problem host into maintenance mode, I started to think… “I bet I can automate this!” Depending on how complex your…