With my Azure subscription I have a Virtual Machine set up for trial and prepare for converting our office system to the cloud hosting. During the testing we let the virtual machine run as a aspx dotnet web server and a remote desktop PC. We usually test run during the day time and let the machine continue running as web server. However, it is often stopped at night and we have to restart again in the next morning. For sure we have the "Hibernation" set to Disabled, and the "Auto-shutdonw" set to Not enabled. But it is still shuts down every night. What I can do to correct this problem? Kevin

Did you mark it as a Spot instance while creating the VM? can you check in the acitivity logs if its shuts down at roughly the same time or random times & what service is stopping it? Also you can redeploy your VM. When you redeploy a VM, Azure will shut down the VM, move the VM to a new node within the Azure infrastructure, and then power it back on, retaining all your configuration options and associated resources. It resolves the issues on your VM if they are due to a problematic physical host. https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/redeploy-to-new-node-windows

why my virtual machine auto shuts down every now and then?

Accepted answer

SunnyG 75 Reputation points

2024-03-13T19:17:45.79+00:00

Did you mark it as a Spot instance while creating the VM? can you check in the acitivity logs if its shuts down at roughly the same time or random times & what service is stopping it?

Also you can redeploy your VM. When you redeploy a VM, Azure will shut down the VM, move the VM to a new node within the Azure infrastructure, and then power it back on, retaining all your configuration options and associated resources. It resolves the issues on your VM if they are due to a problematic physical host.

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/redeploy-to-new-node-windows
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KevinCow-8470 20 Reputation points

2024-03-13T20:57:35.6833333+00:00

Thanks Gatoria! thought mine is the spot instance where the VM Overview description says Azure Spot : Capacity and Azure Spot Eviction Policy : Deallocation.

I tried to make it a reserved machine but the purchase page does not have the same config VM for me. Where only available 'Standard_D2ads_v5' in East US region, 2 CPU 8 RAM when my current VM is a 'Standard D2s_v3'. Would it be still applicable?

Appreciate your help!

Kevin

SunnyG 75 Reputation points

2024-03-14T11:26:36.34+00:00

Spot instances can be deallocated or deleted (whatever was chosen, in your case deallocation) at any time when Azure needs resources for other stuff, that is why you pay a little less for it. if this does not work for you, create a VM with this spot option unchecked.

if you have installed apps and done work in the existing VM and don't want to do it again, do the following:

Step 1: Take a snapshot of the OS disk.

Step 2: Delete the VM without deleting the attached disk.

Step 3: Recreate a regular VM using the snapshot of the OS disk and attach the preserved.

Regarding your query about sizes Standard_D2ads_v5 & Standard D2s_v3 - use pricing calculator to see which will have cost benefits, it will give you a fair idea.

KevinCow-8470 20 Reputation points

2024-03-14T14:00:18.8233333+00:00

Thank you so much Gatoria for your quick response! Probably mine is a Spot instance because the Overview of my VM note there Azure Spot = Capacity and Azure Spot eviction policy = Deallocate.
I am trying to purchase a reserved instance but the list there does not have a matching config. My VM is "Standard D2s v3" at East US Zone1 while the available config is "Standard D2ads_v5". Would this be compatible?

Appreciate your advice!

KevinCow-8470 20 Reputation points

2024-03-14T14:05:20.15+00:00

OH! Thanks Gatoria, I was not seeing your reply and my last comment when I first loaded the page. I will follow your guild to try and let you know the progress. Since I am not a techie it may take a bit more time for me ... ... thank you very much anyway!

SunnyG 75 Reputation points

2024-03-14T14:15:14+00:00

compatible with aspx dotnet web server? yes for sure. VM sizes denote how much RAM/CPU and what kind of CPU that series carry. eg. the 'a' in D2ads denotes AMD processor.

VM sizes have nothing to do with compatibility as long long as you are keeping the OS same which is compatible with your application. hope that helps.

KevinCow-8470 20 Reputation points

2024-03-14T14:32:26.1566667+00:00

Sorry for my ambiguous expression. I read the the instructions said to purchase a reserved same config VM and it will automatically applies to my current (Spot) VM. I was thought this will convert my current VM to a reserved VM just by purchase. but I can not find a same config (Standard D2s_v3) in the purchasable list. That was my question.

SunnyG 75 Reputation points

2024-03-14T15:40:03.79+00:00

RI (reserved instance) will apply to the VM in its current state. as I mentioned earlier, create a new fresh VM or use the current disks in the new VM. in either case, uncheck 'Spot instance'.

now you can choose any size out of the available depending on how many CPUs and RAM you need.
D2s_v3 has 2 vCPU and 8 GB RAM same as D2ads_v5. you can go for it.
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