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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iptables configuration on Windows Azure (CentOS 6.5) for endpoint load-balanced set
I created 2 VMs (CentOS6.5) on Windows Azure for Postgresql database and HA cluster, everything works fine except when I set iptables service on, the endpoint load-balanced set is down.
for security ...
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1
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CentOS 7 Minimal Install doesn't comes with networks scripts? Which version to use then? [closed]
I'm installing CentOS 7 as virtual machine but I'm having some problems related to network. As image shows I select Minimal Install for later add trough YUM any packages I want as for example: PHP, ...
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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 ...
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OSSEC - Multiple VM's on a single DELL blade (XenServer Hypervisor)
I have a DELL blade with ~100 VM's (with a Citrix XenServer 6.1 hypervisor), all with ossec agent connected to a ossec server outside that same blade.
I have a bit of a problem: they all run rootkit ...
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1
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Can't access localhost on a VM Windows Server 2012 Azure
Hi I'm new to VM Technology. I have a Microsoft Bizspark Account with Azure on it. I created a Virtual Machine, Windows Server 2012 and installed Xampp on it. Yeah I know it would be better to use IIS ...
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2
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2
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KVM bridging for virtual machines is not working
After restarting the server, I can not ping and reach my virtual machines from the net and vice versa
[root@pc1(192.168.0.114) ~]# ping 192.168.0.63
PING 192.168.0.63 (192.168.0.63) 56(84) bytes ...
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1
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153
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Win7 VM network is flaky after migrating from Hyper-V 2012 to 2012R2 and upgrading integration software
I'm in the process of upgrading our Windows 2012 Hyper-V hosts to 2012R2. As part of this process, I am migrating existing VMs from the 2012 hosts to hosts that have already been rebuilt. These are ...
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What's important to keep track of with a vBlock? [duplicate]
What are the most vital aspects to keep track of in a vblock? Cpu allocation, memory, storage allocation?
It's a pre-setup environment that allows for infrastructure virtualization at scale with ...
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1
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333
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Accessing host machine IIS Web Application via Win7 VM
I have a .NET development environment on my host machine which uses IIS 7 to serve the ASP application. I have loopback adapters set up to serve the website on 192.168.1.189 using the host file.
I am ...
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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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1
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Cannot install windows guest using virt-install
I am trying to install a windows guest (Windows Sever 2012 64-bit) on my CentOS 6.4 64-bit system using virt-install command.
Command:
/usr/sbin/virt-install --graphics vnc,port=5903,listen=127.0.0.1,...
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answer
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Xm setup on SunFire X4200
I'm trying to set a Xen VM on a SunFire X4200. I'm using Debian Wheezy and have followed this guide https://wiki.debian.org/Xen which I used in previous attempts on different servers and worked ...
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2
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1
answer
903
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VM freezing during WinPE boot up
Got SCVMM 2012 R2 up and running, created a single VM w/ dynamic memory (512MB-4096MB) and a 40GB dynamic disk. The host is configured for NIC Teaming using switch independent configuration.
I setup ...
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2
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How to forward FQDNs to Virtual Machines? [closed]
Is it possible to have 2 domain names pointed to two different VMs running under Ubuntu Server?
My dilema is that I only have 1 public facing IP address.
Here is a graphic of what I am trying to ...
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7
answers
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Cannot power on a VM vSphere "The operation is not allowed in the current state"
I have a server that looks like this
Server1
Server2
Server3 (inaccessible)
Server4
When I try to power it on, it says "The operation is not allowed in the current state." I have ...
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1
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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 ...
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2
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160
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Make ESXi VM use client network
Is it possible to make the ESXi VM to use the network that from where the remote console to the VM (in question) is initiated?
For eg. I have a VM "VM1" on an ESXi.
I am initiating the remote ...
- 164
1
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3
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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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1
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How to change the setting for a network device reported by ethtool, specifically Speed, on VM?
This is related to these two questions, although they don't answer my question.
The machines are RHEL6.
1.ethtool not showing all the properties
2.changing network speed to 1000Mb/s
Output on VM:
...
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1
answer
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Change Hardware Resources During Certain Times Of Day On Windows Azure Virtual Machine
I thought I read you could change the hardware resources during certain times, days, etc for Windows Azure Virtual Machines. I however don't see this option, am I missing it in the Azure portal or is ...
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2
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Store VMs on the same Stick as ESXi
I've a HP N54L Microserver with an ESXi, which runs from the 16GB USB Stick.
In vSphere client I can't see any volumes, where I can store my VMs. And I think that ESXi never needs 16 GB to work.
Is ...
- 109
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1
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Make other VMs show in Network on windows server in Azure
I'm deploying a desktop app that connects to a remote database. standard 2-tier setup, but it's not a web app. People will log in via RemoteApp. But I'm having trouble getting the app instances in ...
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Can't rdp into new ( or old ) Azure VM
I have an Azure account with a VM on it. I haven't used it in about 8 months. I tried to connect today but it wont take my creds. Now I'm not entirely sure that I have my password correct, pretty ...
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2
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Switching from Virtual Server to Physical Server
In the factory where I work there is an Hp ProLiant ML350 G6 with VmWare installed, only hosting a Windows Server 2000 Virtual machine (4Gb ram and 5GHz max CPU). All our PCs (30-40) connect to some ...
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2
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Permissions to edit network configuration
We ship a virtual machine to the clients which runs a web service. Clients need to install this virtual machine on one of their hosts using an hypervisor and just need to modify the network ...
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1
answer
1k
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Corrupted text file recovery (Win7 x64) [closed]
I'm having some difficulties in recovering the contents of a .txt file. While writing to a text file, on a Win7 x64 virtual machine, the host machine crashed. After rebooting, I noticed that the file'...
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How can I ssh to vm from mac under vpn
I have a vmware fusion which is installed a rhel in it, I can ssh to the rhel from my mac. But when I enabled VPN on mac, I can not ssh to rhel anymore. Details are as below:
I tried Reverse SSH ...
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1
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Create iso/image/installation from Windows XP-installation
I'm using VMware and want to create a virtual machine with Windows XP. For this I want to use the Windows XP-installation of another computer, I don't have the cd, so I want to create a iso/image (or ...
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How to find out server model on a VPS [closed]
I have a rented a vps server and I would like to find out the brand and model of this server, for example: Dell Poweredge 2950
Thanks
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208
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i2b2 VM: Copy VM won't give me a valid IP address
After downloading a VM image and making a copy of it, I tried booting up both of them on the same Windows workstation using VMWare Player. I am unable to get an IP address for the second one in my ...
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Do only Servers support VM? [closed]
I'm being told that only Servers support VM. Desktop models do not. What if the hardware characteristic so that I know if box supports real VM?
In this CentOS wiki:
http://wiki.centos.org/HowTos/KVM
...
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VMWare - Get notified when someone is accessing via Remote-Console
recently i (got) moved to a virtual machine with my workstation. There's only one thing i am worry about - 40 people will have the ability to watch me working without me knowing about (except cursor ...
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1
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How to move files between 2 servers, dedicated server and azure VM [closed]
I am moving from a dedicated server on a hosting company to a new windows azure VM, I need to transfer all files from dedicated server to the new VM, there are about 200GB files to move, I want to ...
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1
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Can't boot VM after P2V or ghost - Linux 2.6
I got this old machine that runs on a p2 400 and a Linux Debian 3.1 with kernel 2.6.8 and since it has modified binaries due to internal undocumented changes in the code, migrating off manually isn't ...
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Migrating a VMware ESXi 3.5 image from one server to another
The primary reason we're migrating is to keep all our configuration settings ... php, mysql, Apache Solr ... the same when we change servers. The existing server is behind a firewall and that's all ...
- 1,096
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Linux Red Hat Resize VM resize2fs - Couldn't find valid filesystem superblock
I'm trying to increase the size of a Linux Red Hat Virtual Machine by 10Gig. This is just on a Test Server I created that I'm trying to figure out.
I increased the VM by 10 gig with this command
[...
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Why Are There Only 65,535 Ports, and Will We Ever Have More? [closed]
I understand the original reasoning behind having 65,535 ports per IP address: this is the highest number that can be represented by a 16-bit, or 2-byte, number, and it wasn't conceivable that ...
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2
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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:
/vmfs/volumes/...
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2
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check a vps guest memory usage and CPU usage
I have vps guests that are managed by KVM and libvirt. Using virt-df, I am able to check the real disk usage of each vps guest.
#virt-df [--options] -d domname
Is there a similar utility tool to ...
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reached the maximum partitions on my virtual machine
I have a virtual machine and I extended the size since I needed more space. Here is what I have and the message I am getting:
I was reading up and I saw some references to diskpart.exe and it gave me ...
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How does migrating a running Virtual-Machine from one Hypervisor to another actually work?
How does migrating a running Virtual-Machine from one Hypervisor to another in a cloud environment actually work?
I know that it is possible and that this feature exists. But what does actually ...
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Proxmox resize failed: exit code 1
How can I resize the hard disk in proxmox? When I have tried, I get the following error.
"command '/usr/bin/qemu-img resize /var/lib/vz/pools/development/images/105/vm-105-disk-1.qcow235433480192' ...
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4
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VM Corrupted, what's the next step?
So one of our older VM's, which usually has no issues, is giving this error now when starting. It keeps going in a loop restarting and turning off with this error message.
I figure it's probably some ...
user57862
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1
answer
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Configure an Azure VM for Dynamic DNS for Cloud Services
I am trying to setup an Azure VM with proper DNS to allow multiple cloud services to communicate across cloud service boundaries.
As I understand it, I need to provide my own DNS server. I do not ...
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3
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When to employ server failover in a virtual environment
This question kind of got me thinking about fault tolerance in DHCP, so I did a little digging in my current environment and discovered that we only have 1 DHCP server per major site in our company ...
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2
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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.
Thanks!...
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Two NIC (eth0,eth1), two global IP on same subnet. Became unreachable to IP on eth1 after reboot
I configured a CentOS 6.5 virtual server and deployed it to a remote VMware vSphere environment.
We needed two IP address, so I added a virtual NIC and assigned a second IP on eth1.
I didn't ...
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1
answer
105
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SQL, website and desktop application on a Windows Azure server?
I recently started considering Azure over my current VPS host PhotonVPS for Virtual Machines. I assume that Virtual Machines are the same as VPS servers (please correct me if I am wrong about that).
...
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1
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Most VMS refuse to start [closed]
Setup: Virtual Host, running server 2012, hosting around 10 production VMs
Problem: Last night, 2 VMs stopped with no warning, event log notification, or any information. The rest of the VMs on this ...
user78214
0
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1
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438
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Linux Containers (LXC) : lx-execute and networking
I have a question about LXC Containers.
I have some containers, if I lxc-start them, they come up with networking fine, but I want to just be able to run commands against them using lxc-execute, ...
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