Questions tagged [virtual-machines]
A virtual machine (VM) is a completely isolated guest operating system installation within a normal host operating system. It is a software implementation of a machine (i.e. a computer) that executes programs like a physical machine.
2,837
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GCP VM networking issue - communication between vms
i am more Java developer than a system/cloud architect, yet i am stucked in position from which i see no way out.
On Google Cloud i have custom network named t with subnet t-eu which has a primary ...
google-cloud-platform
0
votes
1
answer
22
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Unicast-mode network load balancing on Hyper-V virtual servers
I have been struggling with an issue and I hope that someone can help me. I don't know whether Hyper-V or my physical switch is misconfigured (or both are misconfigured).
I have two virtual servers, ...
- 11
1
vote
1
answer
82
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Azure VM stuck on GRUB Bootloader after kernel upgrade
I've an Azure VM that has had quite a lot of extra work regards its networking etc performed as post-create setup. Having read about a particular vulnerability that the VM was susceptible to (judging ...
- 111
0
votes
0
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13
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ERROR: (gcloud.compute.instances.start) HTTPError 400: The instance resource "VM" is already being used by "snapshot"
I have an automated procedure that uses some google cloud VMs that are already created. I do not manage the cloud environment directly as this is managed by the cloud team. I recently had this error. ...
- 115
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0
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36
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Update Windows Server 2022 With Exchange 2019 using a proxy server to avoid giving the machine an internet connection
We have cloned our production e-mail server to a Hyper-V vm. We need to fix some update issues we have with our production server and as such we have restored the server from a backup so we cant test ...
- 21
-1
votes
1
answer
60
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No DNS record or entry in Host file, but can still access IIS site?
We have a VM in azure (with no Public IP), that has a bunch of sites inside the IIS. These sites are only accessible from inside the VM or whilst being connected to our OpenVPN. There is no DNS record ...
0
votes
0
answers
38
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Unable to connect to Azure VM using RDP
I have a Windows 10 Azure virtual machine I've been using for more than a year and all of sudden I can no longer connect to it using RDP. I didn't change any configuration or install any software ...
- 101
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1
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96
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How do I increase Threads per core for an Ubuntu VM in VMware?
I recently purchased a VMware dedicated server and I created my first VPS on it with Ubuntu 22 server OS . Using lscpu in Ubuntu , I'm seeing the following :
steam@steam:/root$ lscpu
Architecture: ...
- 21
9
votes
4
answers
1k
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What is the the purpose of using paravirtualization if there is a hardware assisted virtualization?
I am doing a research about QEMU/KVM and Firecracker/KVM.
As far as I understood, both Firecracker and QEMU communicates with KVM to eventually benefit hardware assisted virtualization by changing CPU ...
- 93
1
vote
1
answer
77
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VM Windows Server 2022 does not start on its own after reboot
I have a VM created in google cloud, where I use a Windows Server 2022 Datacenter, but every time I restart this machine through the remote connection through my windows 11, the VM does not start by ...
0
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1
answer
23
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Azure Load balancer traffic distribution
I have a standard load balancer deployed with a backend pool consisting of two servers, inbound rule - 443. We have session persistence selected with Client IP. I want to know if by doing this all the ...
0
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1
answer
48
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Explaining why setting up a WiFi connection that interfaces with a virtual bridge in Linux is problematic
Just like you can bridge two wired ethernet interfaces, you can bridge between an ethernet interface and a wireless interface. However, most Access Points (APs) will reject frames that have a source ...
- 103
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1
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116
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VMWare Ubuntu - How to access a docker container in Ubuntu while also running nginx
I am running Ubuntu 22.04.3 LTS in a virtual machine. I installed Nginx with port 80.
When accessing http://localhost:80, the normal website is displayed by Nginx.
I then installed docker and two ...
0
votes
1
answer
29
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Unable to delete VMs in Azure AME tenant
All the VMs are stuck in the state Error code "NetworkingInternalOperationError" because the previous delete operation timed out and did not delete any resources. We are now unable to delete,...
- 1
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0
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27
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How do IaaS vendors ensure consistent performance of the vCPUs they sell across different hardware?
IaaS vendors like AWS sell cloud instances based on vCPUs. In principle, vCPUs within the same type of cloud instance should have similar single-core performance (excluding the issue of noisy ...
- 139
1
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1
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78
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Permissions broken after mounting disk on /home in Linux VM with AAD integration
My problem is as following:
I have a Azure Linux VM and external Managed Disk attached to it. I want to mount this disk to /home directory so that files of my users are persistent across operation of ...
- 11
2
votes
1
answer
153
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Sudden low CPU performance
Im running a service on a GCP VM that has, randomly, very low CPU performance. Commands like grep and tail on text files often take up to a minute to start showing otherwise instant outputs.
This has ...
0
votes
1
answer
78
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Ubuntu 20.04 VMWare EXSI VLAN Remote Connection Lost after Kubeadm install
While setting up a Kubernetes environment for studying for CKA exam using the Linux Foundation environment instructions, I started being unable to SSH into my Ubuntu 20.04 controller and worker after ...
0
votes
0
answers
49
views
Route between ip adresses on same interface
I have on my linux host several vitualbox machines and one docker machine. Docker created the default network interface docker0 with ip=172.17.0.1/16. To connect vbox machine to the docker one I've ...
0
votes
1
answer
205
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What is the correct KVM VM vCPU config in cockpit for proper load balance on physical CPUs
I have dual CPU server. I want to run some VMs on top of it. While configuring VMs thru cockpit (on redhat 8.0). I cam across this screen:
I just want to allocate 8 cores with 4 on each physical CPU. ...
- 101
0
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2
answers
173
views
How to increase the hard disk space of thin provisioning virtual machine?
Created thin provisioning VM (Suse Linux) with 100 GB hard disk. Now due to space requirements, I need to increase the size to 200GB. Can someone please tell me how to increase the space of the "/...
1
vote
1
answer
192
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Get list of VMs NOT enabled for Replication using Powershell?
I want to monitor the Replication status of all VMs on our Hyper-V.
All our VMs are replicated. When a replication fails OR the VM is removed from replication, I want to know. I found the following ...
0
votes
1
answer
1k
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Server 2022 Running Hyper-V Stuck in "Shutting down service: Hyper-V Virtual Machine Management" -Why?
I've been running HyperV on 2012R2 until EOL and never encountered this problem. New hardware, installed Windows Server 2022 Standard. Created two VMs, doing the same thing as before, one webserver ...
- 1
4
votes
2
answers
1k
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VMWare - Lower the size of a disk
We need to lower the size of a VM disk, we have 2 disk in the Virtual Hardware of that virtual machine, one of them is 8TB but at the end, only 600gb is used.
Current configuration:
If we tried to ...
0
votes
0
answers
59
views
Can't connect instance that is migrated to AWS
I am migrating Azure instance to AWS, I migrated it successfully but when using EC2 instance connect or doing SSH using key pair I am unable to login. How can I resolve this issue?
Steps I Followed
...
-1
votes
1
answer
396
views
Azure Virtual Machine Images for Windows Server Standard Edition
When creating a new VM via the Azure Portal we only see Datacenter Edition, yet the docs seem to make it clear that Standard Edition is a valid option in Azure; although you have to create your own ...
- 1,312
0
votes
1
answer
30
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Site down after VM restart [closed]
I have a standard WordPress installation on GCP. I needed to edit the php.ini file, which I did. And, then restarted my VM, so that all services such as PHP, Apache etc. also get restarted.
However, ...
0
votes
0
answers
21
views
Compute Engine being underutilized
I got a notification saying that my VM instance was being underutilized and that I should change to a lower specification. If I do that, would I lose all the data on the VM.
0
votes
0
answers
17
views
Failed to start cpanel-on-almalinux-1-vm
I am getting this error while trying to start the instance.
Failed to start cpanel-on-almalinux-1-vm: Operation type [start] failed with message "The resource '276657731774-compute@developer....
1
vote
1
answer
376
views
An Active Directory Domain Controller (AD DC) for the domain could not be contacted
I have a PC with Windows 11 Home. I use Hyper-V to install 2019 server (Server) and 2 Windows 10 Enterprise virtual machines (VMs). I add two Enterprise VMs on Server as follows.
I select MARVEL.local ...
- 21
0
votes
0
answers
45
views
Unable to ping the vm running with ebpf program
I am using an eBPF program which counts the number of packets received on its interface on my destination vm.
At first I can able to ping the vm running with eBPF program that is destination from the ...
0
votes
1
answer
88
views
Best practices for deploying ASP.NET Core components across multiple VMs
I'm working on a project that requires deployment both on the cloud and on private virtual machines. The customer provided 4 VMs with the stipulation that the database should be on one VM, the ...
- 101
-1
votes
2
answers
89
views
How can I add an additional working IP to a VM?
I have 2 websites working fine on the same IP (92.46.87.48). Is a ubuntu server on a VM. Now I need to assign one ip for every website. I edit the /etc/hosts fine, I just buy an additional IP and now ...
- 1
1
vote
0
answers
166
views
UFW is not filtering traffic routed through bridge
I am experiencing a case where UFW is not blocking packets coming from a VPN host, going through the VPN interface, then through a bridge and finally to a VM. I could configure another firewall on the ...
- 11
0
votes
0
answers
196
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How can I restrict login to Azure LINUX VM using AAD integration
I have an Azure Linux Virtual Machine with "Login with Azure AD" option enabled.
But I am still able to log into with admin account using password.
Or I can just create another user by using ...
- 11
0
votes
0
answers
122
views
Disk is at 100%, Hyper-V vm will not start
Due to wrong communication, people uploaded a ton of file in our file server ( a hyper-v VM) and now the VM does not have enough space to power on.
I did not built it but I have to figure a way to &...
- 1
0
votes
0
answers
465
views
GCP load balancer can't connect to instance group: unhealthy upstream error
My Goal
I want to connect my domain (dashboards.example.com) to my Google VM instance on port 3000 to showcase Metabase. I do so through a Google DNS and load balancer.
My problem
While trying to do ...
1
vote
1
answer
560
views
How to remaster an Ubuntu Live ISO to revise grub.cfg to autoinstall from local cloud-init user-data
I'm working on Intel and M1 Mac's and running Ubuntu Server in VMWare Fusion VMs. I'm currently using the latest ubuntu-23.10-live-server-amd64.iso and ubuntu-23.10-live-server-arm64.iso. I can get ...
- 677
0
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0
answers
36
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Offis DCMTK's StoreSCP reset issue in Mercure's VM
When several DICOMs are sent to mercure from an external machine (not within the VM) using the dcmsend command, the receiver is reset with the following error in the Receiver Logs:
Oct 14 16:45:32 ...
2
votes
1
answer
481
views
How to mount an old disk back to the RHEL VM without reboot?
Background
I have added a second hard disk (500GB) to this RHEL VM. And then format, created volume group (storerhel2) and logical volume (store) for it.
I then mounted it to a newly created directory ...
- 21
2
votes
1
answer
487
views
Convert Physical Server 2008 R2 to VM
I need to convert a Physical Server into a Hyper-V Virtual machine. I used the "Disk2vhd" Tool, but when uploading the image, it does not recognize the Operating System. I also used the &...
0
votes
3
answers
733
views
Enable connection from Hyper-V guest to Windows Server 2022 host
I have a Windows Server 2022 that has a VM running on Hyper-V. the VM is an Ubuntu Linux machine. I can ping all computers on the local network. as well as access Internet. But I cant seem to be able ...
- 115
0
votes
0
answers
272
views
gcloud compute ssh asking for password
Here is my situation - I have been SSHing into my VM instances on Google Cloud Platform for years without any issue using the command:
gcloud compute ssh jackson@myservername
I just got a new macbook ...
0
votes
0
answers
52
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GCP: Producer Portal : Test Deployment during creating Product fails with "One or more licenses are unhealthy."
I am creating a new product in Producer Portal following the steps in VM Creation
I am using Deployment Manager as the way to deploy the package. On Validate step, the test deployment fails with this ...
0
votes
2
answers
190
views
Unable to run GCP VM Instance with a container
On GCP you can create VM instances and configure it to pull a docker image to run a container. The container doesn't seem to be running in my case. When I SSH into the VM and run docker images no ...
- 247
0
votes
1
answer
962
views
How i can init kubeadm on containerd or cri-docker?
kubectl version --client
`Client Version: v1.28.1
Customize Version: v5.0.4-0.20230601165947-6ce0bf390ce3`
kubeadm version
`kubeadm version: &version.Info{Major:"1", Minor:"28", GitVersion:"v1.28.1", ...
0
votes
2
answers
325
views
How to find the bottleneck of network bandwidth from local machine to Azure VM and improve it? [closed]
I create an Azure VM with SKU Standard_D1_v21 in Southeast Asia. According to this doc, the expected bandwidth is 750Mbps.
However, I test the connection bandwidth from my local machine to the VM, the ...
- 103
0
votes
0
answers
10
views
Is there qay automate revert vm in xen ochestra or xcpng tool?
I would like to implement automated deployment for software updates.
Any CLI command I can use to automate the task?
Revert to clean snapshot
Save current
- 119
1
vote
3
answers
300
views
In cloud, is it possible to access guest VM from host machine?
In KVM, it is possible to access the guest machine from the host machine. For example, you can SSH to the host machine and then access the guest VM by virsh console vm_name.
Is that possible in cloud? ...
- 111
1
vote
0
answers
357
views
Hyper-V GPU Passthrough with NVidia A100 no display
I am currently trying to get some NVidia A100 GPUs to work on our Hyper-V Hypervisor. I managed to setup the GPU Passthrough to a VM but the problem is I don't get a video display. I assume the ...
- 81
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