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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Hyper-v number of Virtual Processor (Virtual CPU) on Virtual Machine

VMware world recommends that you only add one Virtual CPU on each Virtual Machine unless that your application requires detect more than one CPU. Does this recommendation could be applied on ...
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1answer
36 views

Changing Azure VM networking settings

This is probably a stupid question but I am going to ask anyway. I have a VM running on Azure. I go into network connections and change the IP and gateway and I loose connection. What options do I ...
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1answer
49 views

Virtual network - tracert to local vm results in over 255 hops [closed]

Why does my tracert take over a maximum of 255 hops, when both vm's are on the same local network, hosted on my laptop? I have a laptop which is connected to my home router via wireless lan with ...
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1answer
140 views

Is there a way to specify versions for programs using Vagrant and Hosted Chef?

I am trying to improve my development workflow but am running into some major roadblocks. Currently, we develop on local Windows machines running XAMPP then after tested on an individual machine, push ...
1
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1answer
533 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
88 views

SSH connection lost after random time interval, both sides claim the other closed the connection

I'm connecting to a virtual solaris machine from the windows host system running virtual box. This works for a while but after some time the connection vanishes. The stange thing is that sshd claims ...
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0answers
27 views

ISCSI drives suddenly lost partitions

We have a VM host, and each VM is given an ISCSI volume to boot off of. These ISCSI volumes are stored on a second server. Today, we had to reboot the VM host because ISCSI hosts kept going into ...
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1answer
35 views

Preventing operating systems from being installed on a server [closed]

Is it possible to blacklist certain operating systems from being installed on a server? Example scenarios: 1) There is an existing physical server, with no operating system. Is there a way to block ...
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3answers
16k views

Free Nagios virtual machine [closed]

Where can a I get a quality, free VM of Nagios? http://www.nagios-on-cd.org/ seems to be dead, and the VMware appliance directory only lists JumpBox (good quality, but paid) and several other very ...
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6answers
7k views

How do I get /dev/random to work on an Ubuntu virtual machine?

Apparently, /dev/random is based on hardware interrupts or similar unpredictable aspects of physical hardware. Since virtual machines don't have physical hardware, running cat /dev/random within a ...
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0answers
289 views

ESXi 4.1 VM gone after hard reboot

I have a serious problem here. After I forced a reboot of a freezed ESXi 4.1 server, a VM is literally gone. When I ssh to the host and run ls -lah inside the datastore, it returnes: ...
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2answers
105 views

How to remove 2003 server roles without cd-rom?

Trying to remove a few server roles on a 2003 server but its asking me to put the cd-rom disk in. Wondering if there's another way to remove roles without putting the cd-rom as it's a VM and I don't ...
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2answers
47 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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2answers
777 views

How do I give label to vSwitches on VMWare?

I've searched extensively trying to name the vSwitches that I create, but all I can name them are "vSwitchX" where x= some number. How do I give these switches names? I'm using the Web Client. ...
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0answers
28 views

Cannot connect VMWare VMs to datastore ISO but can connect to same ISO on local PC via Console

VMWare 4.0U4b (I know...) I am unable to connect new or existing VMs to ISOs contained on any of the datastores. I was able to however boot from an ISO on my local PC connected via the Console. I ...
1
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1answer
81 views

HyperV External Switch Multiple VMs

I'm quite new to hyperv and I am having problems setting up network access for my VMs. The host has two physical network ports and I've assigned one to an external virtual switch. I've then setup two ...
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0answers
28 views

Azure VM stopped communicating with other VM:s in same virtual network

We have three VM:s in an Azure Virtual Network: VM01 (Subnet 1) - 192.168.100.4 - Running SQL Server 2012 VM02 (Subnet 2) - 192.168.200.4 - Running IIS8 with WCF-service on port 8083 and ...
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2answers
67 views

Multiple Web Server VMs or a Single VM with virtual hosts?

I have a number of sites running on various physical servers that I'm looking at moving into our virtual environment. Most of these are small sites usually with a MySQL database. User base is ...
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1answer
2k views

VMware vmx HDD boot order and CD-ROM boot order

In a VMWare .vmx file one can set a key to define the order of HDDs to try for booting, e.g.: bios.hddOrder = "scsi2:2,scsi0:1,ide1:0" This is useful when there are many possible bootable HDDs ...
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2answers
100 views

Recover Xenserver VM's in Linux Rescue mode WITHOUT Xenserver host

My physical server got hacked so my provider has shut down the server and booted it in Linux rescue mode. I've got full access to the file systems in Linux, however after hours of trying and searching ...
0
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0answers
22 views

Accessing VM loopback IP from Host

My host machine runs OSX 10.9.2 and it is running a windows 7 VM using NAT. In the guest machine 10.0.2.2 points to the localhost of my host. However I want to be able to debug the same web ...
2
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1answer
140 views

XenServer 6.2: reattach SR but all disks have no description

I have recently reinstalled XenServer on my server. All the VHD files were stored on my NAS via NFS, so I re-added the NFS SR after reinstallation. However, all my VMs seem to be missing, and the ...
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5answers
1k views

Can a VMWare Server 2.0 virtual machine be “unvirtualized” to physical hardware?

We have a number of VMWare Server 2.0 virtual machines that were created using VMWare Converter (It copies a physical machine to a virtual machine). If we need to convert the virtual machine back to a ...
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2answers
1k views

Virtual Machine (Sun's VirtualBox) to a real PC

I would like to create a virutal machine that I could clone to real computers (about 40) (every computer have the same configuration: MOBO, Video, Drivers). I have to use Sun's VirtualBox. Is there ...
0
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1answer
42 views

Windows Server 2012 R2 - Email server's external IP address when the Azure VM starts

I have been trying to setup a task in the task scheduler that sends an email to me when the server starts. The email should contain the external IP address of the azure virtual machine. What should ...
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3answers
92 views

Port scanning from VM users

After receiving an Abuse Notice from my server provider, i was wondering how they make to check up all my traffic and send me these abuses. I would possible like to know if there is some kind of ...
0
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1answer
41 views

Need looping Powershell script to email me when site has error message [closed]

Running 08 windows server on a VM We need to be notified by email or by other means whenever the site is either 404 or goes to maintenance page. Therefore, we need the script to be constantly ...
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0answers
58 views

Share serial port between linux containers

I have a requirement to share a single serial port between two or more linux containers. The LXCs are spawned by the host linux. I explored the option of socat, wherein the host will open a TCP ...
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0answers
162 views

How to setup Linux DNS server for Azure VMs in virtual network?

I'm trying to use Linux Bind9 to set up a DNS server for my Azure VMs in virtual network. I got one web server and one mail server. My goal is making GoDaddy connect to my own DNS server, and redirect ...
0
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1answer
47 views

Accessing IPMI address

Currently if I want to know the server IPMI address, I will have to go to the SBIOS and check under BMC. Is there a way to get the IPMI address from inside a virtual machine ?
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votes
3answers
17k views

How can I create a copy of a vm in vSphere Client running on ESXi 4.0?

I'd like to create copies of the VMs located on my datastore that I can put up temporarily on a different server while I perform some maintenance on our main virtualization server. Aside from using ...
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1answer
51 views

Force network messages from VM's on same ESXi to gateway

In the context of introducing ESXi we would like to know if it is possible to force messages destined from VM_A to VM_B on the same ESXi towards the gateway. The reason behind this seemingly strange ...
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2answers
4k views

Hyper-V - Creating a large fixed disk - EXTREMELY Slow

Hey everyone, after posting another question here, it seems I have to create a fixed disk in order to get one 700GB. I have shut down the machine (which basically has nothing on it), and gone to ...
0
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1answer
117 views

Backup Hyper-V To Google Drive?

I was thinking about backing up a Hyper-V host to the cloud and a potentially crazy idea came to mind. With Google Drive, you can get 1TB of storage for 2 bucks a month. This would be more than ...
0
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1answer
100 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: ...
1
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3answers
1k views

Bridged Networking with bhyve and FreeBSD Guests does not work

I have a FreeBSD10 host with bhyve and the following IP-configuration in rc.conf: ifconfig_igb0="inet X.X.X.146 netmask 255.255.255.0 broadcast X.X.X.255" defaultrouter="X.X.X.254" ...
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votes
5answers
223 views

What should be considered when purchasing a virtual machine set up?

I've been asked for an opinion about a purchase of a blade server that should be used for running virtual machines. I have very little experience in this, so what things should be considered in terms ...
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votes
1answer
274 views

Deleting a .lck file in vCenter to release a VM lock?

I'm working on migrating VMs from esxi 4.1 to esxi 5.5. I was wondering if deleting the .lck file of a VM in the 4.1 datastore would let the 5.5 (connected to that same datastore) take ownership of ...
2
votes
1answer
62 views

Is it possible to let a web application use the combined hardware resources of a few server machines using Apache Mesos?

I am studying a framework called Apache Mesos. I am totally new to this framework. According to this website, it can combine your datacenter servers and cloud instances into one shared pool from ...
0
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0answers
74 views

Hadoop HA connection issue

I am using the Azure VM to build a Hadoop HA cluster, I'm trying to set up an Active namenode and a Standby namenode. But when I finished my configurations, I found I can only access one namenode via ...
1
vote
1answer
639 views

How do I get a network interface up in rhel 7?

I was given a rhel7 vmware template to use for provisioning rhel 7 test environments. When I created my vm, it booted up fine except that my network interface doesn't seem to come up. If I type ...
0
votes
1answer
111 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 ...
0
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1answer
491 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 ...
1
vote
0answers
97 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 ...
0
votes
1answer
63 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 ...
4
votes
1answer
3k views

Renaming an Azure VM

I am looking to rename an Azure VM. I have copied a VM from one subscription to another using this guide: ...
4
votes
2answers
94 views

Unrendered Black Areas In Windows via RDP

I'm connecting from Windows Server 2012 R2 to Hyper-V virtual machine running Windows 8.1 via RDP (mstsc.exe). The VM is hosted on the same machine from which I'm connecting. Everything was fine until ...
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0answers
66 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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2answers
4k views

hyper-v could not initialize memory there is not enough space on the disk (0x80070070)‎

I have created a virtual machine on a Hyper-V server, Dell PowerEdge with 24 Gb of RAM. I want to have four VMs with 2048 Mb of RAM each. Originally, I created this one (SV-YAMATO) with 512 Mb of RAM, ...
0
votes
1answer
146 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 ...