In one of my previous posts I went over how to configure live migration (for all three types). One of the biggest pain points there is setting up the Constrained Delegation and Live Migration Authentication (needed for Hyper-V Manager Migration/move-vm), so I've written up a script to simplify the setup. Take a look below the break for more!
Tech TopX: Navigating Server Core
In this episode of Tech TopX we will be covering how to get around Server Core and the tools that are available to you.
This is a continuation of a previous Tech TopX, so make sure to check it out!
This is a continuation of a previous Tech TopX, so make sure to check it out!
Removing and Readding a cluster to SCVMM without downtime (with logical switches)
This is going to be a short post today, but I wanted to share something that I found really cool.
So you just spent all this time getting the your Hyper-V networking juuuuuust right or getting a Hyper-V logical switch working in SCVMM and now you need to remove and readd the cluster to SCVMM (maybe you are hitting a bug and that's the workaround). Now you've got to undo and redo all your hard work (like you would if you were using a dVS on vCenter). There goes the weekend!
Not so fast! SCVMM is simply a management layer, unlike vCenter which is a management and feature layer. This means that all of the config is stored on the host. Short story?
You can remove a host that is using a logical switch and add it back to SCVMM without any need to change the configuration! SCVMM will automatically pick up where it left off when you add it back!
Hopefully that can save you a few hours (days?) of work!
So you just spent all this time getting the your Hyper-V networking juuuuuust right or getting a Hyper-V logical switch working in SCVMM and now you need to remove and readd the cluster to SCVMM (maybe you are hitting a bug and that's the workaround). Now you've got to undo and redo all your hard work (like you would if you were using a dVS on vCenter). There goes the weekend!
Not so fast! SCVMM is simply a management layer, unlike vCenter which is a management and feature layer. This means that all of the config is stored on the host. Short story?
You can remove a host that is using a logical switch and add it back to SCVMM without any need to change the configuration! SCVMM will automatically pick up where it left off when you add it back!
Hopefully that can save you a few hours (days?) of work!
Tech TopX: Hyper-V Initial Install
We have another new entry in our Tech TopX series. I'm pretty happy with this one - it's a basic overview of Hyper-V installation.
Most of this is focused around Nutanix (as I use our custom Nutanix scripts) however some of the info is going to be useful no matter what Hyper-V system you are installing.
Most of this is focused around Nutanix (as I use our custom Nutanix scripts) however some of the info is going to be useful no matter what Hyper-V system you are installing.
Hyper-V Live Migration
Hyper-V Live Migration is significantly more complex then ESXi. In this post we will go over the types of live migration, how to configure it, and how to handle common errors.
There are 3 main types of live migrations:
Types of Migration
There are 3 main types of live migrations:
- Hyper-V Manager Move VM. This can be a shared-nothing move. Non-HA VMs only
- Failover Cluster Manager Live Migration. HA VMs only
- SCVMM Migrate Virtual Machine. Any VM, only from SCVMM
Setting up Automatic Windows Updates using Cluster Aware Updating (CAU)
Applying Windows Updates is always a pain - it seems like there's always another patch to install and reboot that is required. Add in clusters where you have to manually move the load around to ensure that nothing goes down and it gets far more complex.
Starting in Server 2012 Microsoft significantly simplified life for cluster admins by introducing Cluster Aware Updating (CAU). This tool will drain all the roles from one node in the cluster, patch it, reboot and check for more patches repeated until there are none left. It will then repeat this for the other nodes in the cluster. Even more awesome, you can set this to run automatically allowing your Windows hosts to stay fully patched (with all the bug fixes and security fixes that entails) without affecting your VMs at all. We'll cover how to get this setup here in this post
Starting in Server 2012 Microsoft significantly simplified life for cluster admins by introducing Cluster Aware Updating (CAU). This tool will drain all the roles from one node in the cluster, patch it, reboot and check for more patches repeated until there are none left. It will then repeat this for the other nodes in the cluster. Even more awesome, you can set this to run automatically allowing your Windows hosts to stay fully patched (with all the bug fixes and security fixes that entails) without affecting your VMs at all. We'll cover how to get this setup here in this post
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