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.

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203 views

How do you change host management credentials for a cluster in System Center Virtual Machine Manager?

How do you change the Host Management Credentials in System Center Virtual Machine Manager for servers in a cluster? If I right click on the server and go to properties I can see the Run As account ...
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1answer
678 views

CentOS 7 with vmxnet3 stops transmitting

I'm setting up a virtual machine running CentOS 7 in a vmware environment, using a vmxnet3 virtual network adapter, and have run into a rather frustrating problem: the interface stops transmitting ...
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113 views

Processes surviving Windows VM reboots?

Summary: A long-running virtual Windows Server 2012 system this weekend became very slow; from remote we did Restart-Computer -ComputerName xyzzy -Force, which succeeded by all accounts; except that ...
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1answer
148 views

Hyper-V and Windows Failover Cluster Manager - View available resources per node?

I have a Hyper-V host with Failover Cluster Manager and 6 VM nodes (hosts). How can I see how much memory and CPU is allocated per node? I want to know what my available resources are to create more ...
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1answer
84 views

How do I properly configure host server net adapters when using Hyper-V?

I am converting a number of physical servers to virtual ones, and I have a question regarding configuring the physical adapters on the host server. I am new to virtual machines, and have a nagging ...
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0answers
82 views

Destination Host Unreachable and Communications link failure when I connect to MySQL database using D2RQ library

I have a question: I have a web service which runs on a virtual machine located on a remote server with Ubuntu 12.04 operating system. Now, I want to test this Web Service and I'm using this code ...
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1answer
107 views

How to create a single image of Windows Server 2008 R2 to use on a Azure Virtual machine

I am trying to migrate from a colocation where I own the servers to Azure. I have been following this article: ...
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1answer
179 views

backup/restore/DR scenario for Azure single instance VM?

I apologize in advance - I'm not positive I'm even asking the right questions as I'm new to Azure. I currently have a single instance azure VM with one OS disk and one data disk. I'm running it with ...
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2answers
64 views

How to specify hard disk for hadoop cluster?

I installed Hadoop on one Azure VM, and it works fine by using its OS disk. However, I attached one hard disk to my VM, and I want to know how to configure Hadoop to only use this new hard disk as its ...
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1answer
76 views

Memory Utilization Best Practices

I'm running several Linux-based VMs (vApps, actually) that have varying amounts of memory assigned to them. Some have databases, some web servers, etc. While some are using less than 40% of their ...
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2answers
2k views

Can't access Azure VM via RDP any more

I set up an Windows Server VM on Azure last year and after having not logged in for a couple of months I tried to log in recently and strangely it told me my password was incorrect. I proceeded to ...
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1answer
539 views

How to join local computer to azure virtual server domain? [closed]

Scenario: I want to migrate my servers to cloud and retire all local servers such as DC and file server. At the same time, I wish to control the network traffic to limit the clients access to Internet ...
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3answers
1k views

Is it possible to migrate Azure VM image from one Subscription to another Subscription?

I recently captured one azure vm image in one storage account, and planning to migrate this image to another storage account under a different subscription. I used PowerShell Script to run this task, ...
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1answer
4k views

Is it possible to make Nginx listen to different ports?

I created one Nginx with one Linux Azure VM, is it possible to make nginx listen to different ports so that when I change the port number, the content would be different. I found there would be a ...
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1answer
135 views

How to start multiple Azure VM at the same time?

I'm trying to use Powershell scripts to start multiple VMs at the same time. I only know how to start one single VM or all VMs at the same time, but in my case, I only want to make change to selected ...
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1answer
130 views

Can you use Git to track changes to VirtualBox disk?

Can you track changes to a VirtualBox disk using a VCS like Git? If not what is a good way to use version control to track changes while configuring virtual servers. **I understand that git doesn't ...
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86 views

opensm infiniband route table

I have two centos 6.6 vmware vms. VMware is told to do a bridged network and to replicate physical network. eth2 is dhcp managed by NetworkManager. I am able to get to the point where I can assign ips ...
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2answers
2k views

PowerOn failure after import from Workstation 10 to esxi 5.5

I have a working VM accessed through Workstation 10. I have imported the files to ESXI 5.5, then "Add[ed it] to Inventory" through the Datastore Browser. When I try to Power On the imported VM, I get ...
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1answer
29 views

Copy data from Azure AD to vm AD?

Currently I only have Azure AD that work with Office 365. Now I am planning to create a vm to use RADIUS server. I need to copy user and groups from Azure AD to vm AD. So, how can I do that? I read ...
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1answer
1k views

How to clone image and data for VM on Azure?

I'm trying to find a way to clone the image of one VM on Azure. I knew some information about 'sysprep' and Linux system, but those require delete the previous VM. In my case, I don't want to delete ...
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65 views

Three separate VMs for webserver, database, and data crunching. Good idea? [closed]

I'm writing some quantitative marketing research software, and have a bit of a "blind leading blind" situation at work. I'm not really used to writing web apps or configuring servers; most of the ...
2
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1answer
47 views

Auto-upgrading similar VM guest OSes

Is it possible to handle automatic upgrades of VM guests which differ only in terms of config management? I'm asking about either general or specific technologies which facilitate this. In brief, I ...
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2answers
60 views

Why it is necessary to rejoin the domain after reverting the server from a snapshot?

I am totally new to this, in my project i have seen that it's required to rejoin servers to the domain after reverting them from a snapshot. Can anyone please explain why this is needed and how it ...
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1answer
677 views

Excessive disk usage with virtfs / cpanel [closed]

I'm running a server using cPanel, with virtfs enabled, and seeing very high disk usage compared to the amount of data actually uploaded/created by each user. I am getting DISKWARN emails telling my ...
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1answer
176 views

Server 2008 - Multiple Event 55 NTFS

VMware ESXi with a virtual server running Windows Server 2008 R2. Event Viewer Administrative Events logs are flooded with the following error: Event 55, Ntfs The file system structure on the disk ...
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0answers
559 views

How to convert clonezilla backup image to virtual machine?

I have a 30gB tar.gz disk image of a physical debian machine, created by clonezilla - what's the easiest list of steps to follow to convert it to a virtual machine? Do i have to necessarily make .iso? ...
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103 views

webjob and a virtual machine communication in azure

I have an Azure Webjob that has been deployed in an Azure website, I also got virtual machine that is hosting a MongoDB database on port 27017 which can be accessed for all the virtual machines under ...
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90 views

CoreOs VM getting deleted after shutdown on libvirt

I installed CoreOs on libvirt using link https://coreos.com/docs/running-coreos/platforms/libvirt/. The VM is also showing inside Virtual Machine Manager and working fine. The problem is once I ...
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1answer
153 views

403 Forbidden Error on Azure Linux virtual machine [closed]

I am trying to access the freshly created virtual machine on azure via winscp and putty, through putty I am able to access the VM but via winscp I get following error, Proxy Error: 403 Forbidden. I ...
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37 views

VMs with same name an IP

Does Foreman support managing several VMs with same name and IPs, but with different certname? for example: NAME IP CertName VMLinux001 10.0.0.2 VMLinux001@domain.com ...
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1answer
153 views

Connecting two GNS3 setups in two VMs in the same PC

How do i connect these two gns3 setups in different VMs? It's all in the same PC. My end goal would be to ping each VPC to each other. I am already able to ping VPCs in with different VLANs but only ...
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2answers
392 views

How do I detach a disk from an Azure VM so I can re-attach it to another?

I have an Azure VM with a data disk attached and mounted in a folder in c:\ - the VM is bricked after uninstalling .NET 4.5 (don't do that on 2012 R2). I have created a new VM. Now how do I detach my ...
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1answer
58 views

When an Active Directory User Logs in to Local Windows 2012 Server Launch a Virtual Machine; Possible?

I won't get into the reasons why this needs to happen, however, is this possible. I have a Windows Server 2012 R2 box that needs to be used as a daily driver for a few of a clients employees. Ideal ...
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1answer
37 views

How to spec VM requirements based on historical data of transient processes on Linux?

I've been given a task to break apart the services on one of our main VMs (Amazon EC2) and appropriate additional VMs to suit the services needs. The type of services that I am dealing with are ...
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0answers
84 views

Azure java sdk : permission denied(public key) when trying to ssh to vm

I have created a virtual machine using this sdk: https://github.com/Azure/azure-sdk-for-java. While I can normally ssh to virtual machines created by hand, the ones created by code using this sdk ...
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49 views

Moving VMs and storage used space

I need to move around 1 TB of VMs from a slow SR to a SSD brand new SR. Xenserver pools and hosts are updated to the lastets patches (from 6.2 SP) Using a 1 GB switch and NICs it was quite fast to ...
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1answer
51 views

Is it possible to create a VM from an existing OS? [closed]

I have an existing OS (Ubuntu server) on a separate HDD that I'd like to clone to a VM (preferable VMware or similar capable or running from windows). Is that possible?
3
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1answer
564 views

Need to move VM to another host with different cpu

I currently have a VM configured with CPU 1 socket & 8 cores per socket. I need to move this VM to another ESXi 5.5 host which has 2 CPU sockets with 6 cores per socket. Will I will able to run ...
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3answers
142 views

How to detect virtual machines freezes

On cloud platforms you often hear that because of high load on neighboring VMs, disks over oversubscribed ethernet, backups, or live migration to other hardware, the virtual machine can 'freeze' for a ...
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1answer
123 views

vSphere vApp IP address configuration. How does vApp really work?

I have a pool of ESXi-5.5.0 servers that I have configured a single vApp on. This vApp is configured in transient mode to configure IP addresses from an IP pool I specified. I assigned a single ...
0
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1answer
603 views

Windows 8.1 stuck in Automatic Repair boot loop - Proxmox VE [closed]

I installed Windows 8.1 64B in a VM on Proxmox-VE. It was running fine for a few days until it needed to be rebooted (updates). First I tried reinstalling the OS which worked, until it needed to be ...
0
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1answer
367 views

New Azure VMs on virtual network have no connectivity to anything

A couple of days ago, I created a cloud-only Azure virtual network (no cross-premises connectivity), provisioned a domain controller/DNS server inside of it, and configured both my DNS server and the ...
5
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3answers
289 views

Converting VMware VMs to Hyper-V

Our company is looking to try out Hyper-V as a server virtualization solution so I am looking for the most efficient way to test everything out safely. My plan is to make a snapshot backup of each of ...
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0answers
41 views

Can't Create Win 7 VM with RHEL 6.5 VMM

I have a server running RHEL 6.5 that I primarily run VMs on it. The VMs I run on it are all Linux, with the exception of one that runs Server 2008 R2. Yesterday, I attempted to install Windows 7 as ...
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2answers
864 views

Lost RDP access to Azure VM after Sysprep

I made a stupid mistake. While looking for an easy way to make a backup of my Azure VM I followed directions to make a snapshot of the VM machine. In AWS (*which I am used to) a snapshot is a quick ...
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1answer
1k views

Cannot SSH to Azure Linux VM from terminal

ssh azureuser@xxx.cloudapp.net : 22 when I connect and enter the password I created, then it just goes back to the local prompt and does not actually show the remote prompt. I'm thinking I need to ...
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1answer
39 views

Logging VM activity at the hypervisor level

I have a virtual machine running (currently using virtualbox, but this is flexible), which users ssh into. I would like to log the actions the users take in the terminal, but do it from outside the ...
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2answers
43 views

VMware licnesing for vdi and server virtualisation [duplicate]

I am planning to virtualise 50 desktops as thin clients(concurrent users). Well i will need 5 servers where 3 will be used for server virtualisation and 2 for desktop virtualsiation.All the servers ...
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0answers
124 views

Network connection from old application to SQL Server 2008 R2 lost once in a while

We are trying to migrate an Axapta 2.5 database from SQL Server 2000 to 2008 R2. We are testing performance etc. on the new server, but once in a while, these two events are thrown on the Axapta ...
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0answers
114 views

No network adapters in Virtual Machine after converting from VirtualBox to Hyper-V

I've migrated from Oracle's Virtual Boxx to Microsoft Hyper-V running in Windows 2012R2. My virtual machines are also all Server 2012 R2. After migrating from VirtualBox to Hyper-V and creating new ...