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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0
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2answers
845 views

Setup Azure VM - Connect to internet

I'm basically a total novice in the area of VPN's and DNS servers. I have an Azure VM which I have created and I need to connect it to the internet, and googling sends me to pages where peoples ...
0
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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 ...
5
votes
1answer
857 views

How can I stop Azure from randomly replacing network cards on VMs?

Azure seems to have the habit of randomly changing the hardware configuration of virtual machines, without telling anything to the user. This is of course mentioned in the documentation, although ...
-2
votes
4answers
582 views

What's the advisable maximum CPU usage?

I have a VM with 8 core of processing, and occasionally the CPU usage is going to around 75 ~ 100%. I read in some places, that when the CPU usage is with more than 75% is it a trouble, and can ...
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 ?
2
votes
2answers
186 views

Is the system time across different virtual machines synchronized in virtualbox?

I am developing an application which requires intricate testing involving exact time stamps of various events. As an example, lets say we have two hosts: h1 and h2. Now if I run a tcpdump on h1, I ...
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. ...
2
votes
4answers
686 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 ...
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 ...
3
votes
1answer
3k views

How to convert VirtualBox VM to OpenStack?

I'm running OpenStack in Ubuntu Server 11.10 (installation did using devstack script), but I have some virtual machines that are already running using VirtualBox. How can I convert the VirtualBox ...
4
votes
2answers
3k views

Why can't Openstack VM reach itself via it's Floating IP?

I set up an OpenStack Folsom (2012.2) multi-node, single-network infrastructure. Everything runs fine, instances are running good on any compute node, private network works like a charm and all ...
4
votes
1answer
2k views

Is OpenStack live migration possible without shared storage?

Like many people I am considering creating 'private cloud' using either OpenStack or VMware. VMware vMotion has a nice feature which allows Live Migration of VMs even without shared storage. I have ...
4
votes
2answers
13k views

What is the correct network configuration for a devStack VM (virtualbox)?

Usually when I setup a new Ubuntu VM, i keep the eth0 in NAT mode to get the internet & I add a eth1 interface in HostOnly mode so that I can ssh. But using this devStack guide : Running a Cloud ...
0
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0answers
101 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 ...
2
votes
1answer
135 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 ...
0
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0answers
206 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 ...
0
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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 ...
1
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1answer
42 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 ...
1
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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) ...
1
vote
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 ...
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 ...
2
votes
1answer
70 views

What are the network prerequisites for Windows Azure Pack

I have followed many articles to install and config windows azure pack distributed, But every time I finish configuring everything, the azure pack is not working and give me different errors, seams to ...
0
votes
2answers
442 views

How to create a Windows 2008 VM for uploading to Azure?

I have an existing Windows 2008 R2 (64 bit) machine chugging along. I want to create a VM image of this physical machine so that I can upload it to Azure for scalability purposes. I've found ways to ...
0
votes
1answer
539 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 ...
0
votes
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
votes
1answer
513 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
votes
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 ...
0
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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
614 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
votes
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
votes
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 ...
0
votes
0answers
111 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). ...
18
votes
4answers
13k views

Why VM snapshots are affecting performance?

I read in one of the VMware KB articles that snapshots will directly affect VM performance. But my team keeps asking me how snapshots can affect performance. I would like to give them solid reason ...
1
vote
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 ...
0
votes
1answer
678 views

View PHP error logs on VM - Vagrant CentOS via Puphpet

I have a Vagrant VM running CentOS, which was built from a puphpet file (config.yaml), and I'm trying to get the PHP error logs setup and accessible. config.yaml - PHP section: php: install: '1' ...
3
votes
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 ...
1
vote
3answers
3k 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, ...
0
votes
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 ...
1
vote
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 ...
3
votes
4answers
2k views

How to troubleshoot performance issues of PHP, MySQL and generic I/O

I have a WordPress based website running on a shared hosting. Its response time is very decent (around 2s to retrieve the HTML page and 5s to load all the resources). I was planning to move it to a ...
0
votes
0answers
216 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: ...
0
votes
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 ...
0
votes
1answer
114 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
votes
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 ...
-3
votes
3answers
66 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
89 views

Best practices for scaling and capacity planning : VM only ? VM+Container ? Container only ? Cluster ? Something else?

(I can't find a similar question which has been already answered but maybe I do not use the good words as I'm a french student ;)) The closest answer to what I'm looking for is : Scalable Web ...
1
vote
1answer
203 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 ...