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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40 views

RAID 0 arrangement for max IOPS with mechanical drives

We need to run a high number of low-resource VMs concurrently in 2012 R2 Hyper-V. We've experimented with various configurations and using Perfmon.exe for reporting, we've found we're bottlenecking ...
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0answers
72 views

xend is not found - Xen 4.5 on Odroid XU3 ARM

I am trying to set up Xen virtualization on Odroid XU3 ARM platform. I have done all steps from http://forum.odroid.com/viewtopic.php?f=98&t=6643 to be able to boot into Odroid XU3 with ...
0
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0answers
15 views

How many VM required to run a website and mobile app data? [duplicate]

I am working on a education website and concerned mobile app for iPhone and Andorid. Please let me know How many VM I need to set-up and Hardware requirements for 50k users ?
6
votes
3answers
95 views

Likely causes of NTPD dying unexpectedly and solutions

On a web application which uses s3 for physical document storage, we are experiencing issues with NTP continuously dying. This seems to happen roughly once or twice a day. There is very little ...
0
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0answers
22 views

subdomain forwarding to VMs, EC2, etc (with or without IPs)

let's say I own a domain: example.com . I want to have different users have their own subdomains, and I may want to move these around to different hosts. I may also not trust these users greatly. ...
3
votes
1answer
100 views

Windows Server 2012 R2 Hyper-V doesn't allow VM to use all RAM

I have a physical server with 12GB of Ram, with a system HDD of 250Gb (180Gb free), and a dedicated HDD to host the VMs of 1Tb (600+Gb free). This server was running Windows Server 2008 R2 as a host ...
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0answers
102 views

Networking between host and virtual machine loopback

I got a problem with my vmware guest and host networking. On my vm, a 3rd party company send me vm image to test our product before live environment. As default my vm specs ; Win server 2008 and lot ...
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0answers
208 views

Creating a XenServer VM from the Command-line

I have an issue in which I cannot understand how to create a XenServer Virtual Machine from the command-line. I have installed XenServer on an unused Tower unit, and currently SSH into it from my ...
2
votes
1answer
61 views

What's the difference between listing nameservers in /etc/resolv.conf and /etc/network/interfaces in Ubuntu 12.04?

I am deploying Ubuntu 12.04 VM's from a template using vCenter 5.5. When I try to add nameservers using a customization specification they are added to the resolv.conf file. The VM will not use these ...
2
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1answer
139 views

Is “waagent -deprovision” necessary for migrating an Azure VM to another subscription?

I've migrated a .vhd blob, based on a Linux virtual machine from Azure subscription "A" to Azure subscription "B". I used this article as a guide: Migrate Azure Virtual Machine Between Storage ...
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0answers
58 views

openstack installation on vmware

I've successfully installed OpenStack on a virtual machine Ubuntu 14 desktop on vmware workstation and there are 2 different installation methods; cloning the repository or using sudo apt-get ...
2
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4answers
695 views

SATA vs SAS vs SSD for Virtual Machine Automation

We're using SCVMM and Hyper-V hosts to manage our Automated VM environments. Currently we have two servers with 3 7.2k consumer drives each (one for host OS/Storage, two for VMs). It's hard to say ...
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1answer
45 views

How to link a tomcat application with ubuntu 14.04 server os on an azure server to dot tk domain?

how to link a tomcat application with ubuntu 14.04 server os on an azure server to dot tk domain? few doubts about azure vm: I can only find one DNS name e.g. abc.cloudapp.net, but dot tk DNS panel ...
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0answers
65 views

How to configure HW, OS, network for virtualization with VMDq and SR-IOV features [closed]

I have: SUN X4100 M2 Intel Ethernet Adapter E1G42ET (VMDq and SR-IOV supported) Linux Ubuntu 14.04 Server (host machine) May setup 15 KVM as hypervisor I want some virtual guest machines (linux) ...
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0answers
61 views

High CPU Usage Top isn't Showing Processes

Hey I'm having a weird issue that I'm having some difficulty diagnosing. I have a VM that went down due to high CPU usage today. The websites on this VM are very low traffic, so I knew something ...
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1answer
555 views

Change Xenserver 6.5 Pool Master

I'm looking to change the pool master because my current pool master is having some hardware issues. I've disabled HA and I came across this script to change the pool master to my other server: xe ...
11
votes
4answers
2k views

What happens when a physical machine fails in a virtual environment? [closed]

I'm getting started with virtualization so bear with me. In virtual environments applications run in a hypervisor's layer. So a single physical machine could have many virtual machines on it running ...
0
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1answer
66 views

Running multiple Ruby on Rails web apps on a single Azure VM

I have 5 Ruby on Rails web apps and I want to run them from a single Azure Linux VM in order to save expenses. Actually I wanted to run them as Web Apps but Ruby on Rails is not yet supported. I am ...
1
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1answer
86 views

How to check how many virtual processors a Windows Server 2003 (D13) VM on Azure is using?

When we say a Azure D13 instance has 8 cores, it refers to virtual processors, right? I have uploaded a Windows Server 2003 virtual hard disk (VHD) & created a D13 virtual machine based on that ...
0
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1answer
520 views

Xenserver 6.5 Backup Solutions [closed]

I'm looking for a way to backup up VM's in my Xenserver 6.5 environment. I'm open to scripts or installing some tools/clients but it need to opensource. We want to backup to our Dell MD3660i SAN as ...
0
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0answers
14 views

Conservative Azure Windows VM to Run SQL Server 2008 R2 [duplicate]

For testing purposes I need to set up three Azure Windows VMs to each run an instance of SQL Server 2008 R2 each holding one DB of approx 100GB. There will be quite a few complex stored ...
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0answers
38 views

Binding multiple public IPs to one Hyper-V Virtual Machine

I have a Windows 2012 R2 with Hyper-V running. I have created an external Virtual Switch and a VM ( virtual machine). The VM has it's own public IP. I can ping that VM from a remote computer and it ...
2
votes
2answers
623 views

How to backup Azure VM in a Resource Group?

Is is possible to backup or take a snapshot of a VM created with the Azure preview portal in a Resource Group (not classic/CloudService-based ones)? These new VMs are not visible from the old portal, ...
0
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1answer
81 views

Rescue inaccessible VM without SSH in Google Cloud Platform

I made a mistake in the script of a service in my linux VM in Google Cloud Platform. Now the VM does not boot properly, and no ssh server starts. Is there any other way to rescue this instance and ...
0
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0answers
115 views

Running a virtual machine remotely; connect it to the local network

The scenario is as follows: I have a virtual machine remotely, e.g. on a server somewhere in a data center, and I connect to it from my laptop on a restricted network (only tcp 80 and 443 are open). ...
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1answer
52 views

Get-VMHost does not show the server Networkinfo and number of processes

I run the following powercli 5.5 command , to get info about a host vm :- Get-VMHost |Export-Csv -Path c:\VM.csv -NoTypeInformation –UseCulture and I got these info :- State ConnectionState ...
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0answers
51 views

Ping flood from Azure VM to On-Premise Infrastructure

I have deployed a number of Azure subscriptions now with site to site VPN connectivity back to on-premise networks. In one scenario with a client, they have reported that on a regular basis ICMP ...
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0answers
46 views

Connecting to Azure Docker VM Extension

I am unable to connect to the Azure Docker VM Extension using TLs and I am getting access denied. I just build a new Docker VM through Market place and added new TCP endpoint 2376 for establishing TLS ...
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2answers
35 views

Single access point for several azure vm's

Is there a way to set up a single entry point that will direct me to one of the open machines? I have a number of VM's that are used by a number of different people. Rather than having them log into ...
1
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1answer
44 views

Linux OS installed as a guest OS on VMware Workstation v10.0.2 doesn't show all partitions as is shown when installed ona physical HP server

I'm very new to VMWARE. I've a customized RHEL 6.6 for one of my application which if install on a physical HP Gen8 DL380p server, shows the partitions /apps, /,/boot,/tmp,/var,/usr,/swap When I use ...
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0answers
217 views

Reserve current VIP on VM Azure

I'm trying to reserve the current VIP on my Virtual Machine. I don't want to create a new IP I want to use the current VIP. I think this is possible since 1 or 2 months ago. This is the code I ran: ...
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0answers
8 views

How to identify underutilized servers? [duplicate]

How to identify if the servers are underutilized and CPU/RAM resources can be decreased? Servers are virtual running on VMware. I thought of MAP Toolkit for collecting performance data and then ...
1
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1answer
129 views

Reset password for Azure virtual machine

I forgot my user account to log in to my Azure Virtual Machine. From the new portal I tried the option "Reset password" entering a new user and password. However, I get the notification: Failed to ...
0
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1answer
115 views

How to diagnostic internet access failure on a linux system?

I have a VM running on Xen. The virtual machine was running fine for months and suddently the network access broke down. Dom0 DomU .-------. bridge ...
0
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1answer
69 views

Azure multiple VM with same Virtual Public IP and Host name mapped to Virtual Public IP

I am running following two VM's on Azure within same availability set. HOST NAME First PUBLIC VIRTUAL IP (VIP) ADDRESS 104.xx.xx.26 HOST NAME Second PUBLIC VIRTUAL IP (VIP) ADDRESS 104.xx.xx.26 On ...
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votes
3answers
67 views

ESXi: Running the same VM multiple times [closed]

I installed the vmware ESXi (6.0.0) to a dedicated PC, client computers use vmware workstation 11 to access the virtual machines and to upload them. Right now, If a user uploads and starts a virtual ...
1
vote
1answer
212 views

Can't use ctrl+c to kill process in VM

We are running several RHEL 6 64-bit VM's in a vBlock infrastructure using vCenter 5.5. If I open a console session through the vSphere web client the ctrl+c keystroke will not work. This is very ...
2
votes
1answer
57 views

Can I replicate a standby VM between two exsi hosts in VMware vSphere Essentials Plus Kit without a cluster

I will get getting two physical hosts with their own internal storage (not shared or in a HA cluster) and VMware vSphere Essentials Plus Kit. There is a requirement to have a 'near up to date' copy ...
0
votes
2answers
93 views

how to ssh from a vm to another vm that is on a different host

I have 2 CentOS computer in the same local area network. Both computers have their own virtual machines running CentOS. I would like to ssh from the virtual machine of 1 host to the virtual machine of ...
1
vote
1answer
175 views

Connecting to Oracle DB hosted on Windows 8.1 Azure VM

I have a windows 8.1 vm created on azure, it has 14 GB of memory and 200 some GB storage. I have installed Oracle with a templated database onto it. Everything is fine with the installation and I can ...
0
votes
0answers
14 views

What's the recommended way to scale individual instances in the Google cloud?

In the Google Cloud Platform, it doesn't seem to be possible to resize a VM instance (change the type) the way you can easily do so on AWS. What's the recommended usage pattern here if you run out of ...
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0answers
60 views

Hyper-v virtual machine acting as two separate vm's

I have a Hyper-V virtual machine (vm1) that has two separate instances of itself. I can log into what should be the same VM (vm1) through Hyper-v and RDP (Remote Desktop Connection) with the same ip ...
1
vote
1answer
45 views

Xenserver Virtual Adapter Limit

My understanding is that as of Xenserver 6.5 and earlier versions, you can only have 7 virtual network adapters per VM. Is there any known (probably unsupported) way around this limitation? My use ...
1
vote
0answers
78 views

Set custom cpu string for qemu/kvm

I have some virtual machines with software, which licensing check depends on cpu string. They're running on kvm - with default cpu string value - which is QEMU Virtual CPU version 1.7.1 After ...
0
votes
0answers
96 views

Azure VM - can't connect after ipconfig /release

I was having some intermittent trouble connecting from my Azure VM to an on premise SQL Server instance and, without really thinking about the consequences, I ran ipconfig /release.. Now I can't ...
0
votes
1answer
30 views

Virtualized IIS 7 Intranet page is slow when querying against SQL database

OK… I’ve been tasked to figure out why an intranet site is running slow for a small to medium sized company (less than 200 people). After three days of looking on the web. I’ve decided to post what ...
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1answer
345 views

Can I migrate a VM between vCenter servers in linked mode?

Right now I have two separate vCenter servers (one older, one brand new), each managing 3 clusters of hosts. I will eventually need to get 300-500 VM's from the old clusters to the new. If I put the ...
0
votes
1answer
36 views

Share SSL certificate between VM

I have a SSL certificate for example.com, and I want to protect with it: My home page (example.com) running on a VM in Azure My servlet (servlet.example.com) which is running on a different VM (but ...
2
votes
2answers
103 views

Migrating Vmware to Hyper-V - number of Virtual CPU

I'm performing a migration from VmWare to Hyper-V and the Virtual CPU that you are assigning to a Virtual Machine is different and I'd like to know what should be the equivalent values when we move a ...
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votes
2answers
51 views

How to automatic reset linux vm at every boot time [closed]

I am working on virtual linux based penetration testing lab. I have configured debian linux according to my requirements and lab (like apache, mysql, firewall, network, permissions, etc), I just want ...