I cant get my linux server ( centos5 ) with virtualbox run 2 virtual machines in headless mode. Only one machine gets network connection. Can anyone tell me how to make 2 or more virtual machines work with 1 eth-port in headless mode using virtualbox ?
View 1 RepliesFirst off I am new to Linux and fairly new to working in Networking and Server config's. I have been using Windows for years and have been learning Windows Server 2003 as I have a Technet account, I can get any MS software. I would like to learn Linux and use this as my Server environment. My project looks like this: I have a Quad core, 8gb machine. I want to install a distro of Linux (server or desktop) and run Virtual Machines on it.
My perferred way would be to use Virtual Box but I could use VMware products if that was better. I would like to run WS2003, WS2008, Linux Distro and anything else that will run in a VM. I can figure out that part pretty easily. I want the Linux host machine to run all these VM's and access and use them on my MAC remotely. I have done some research on ESXi as well, but I don't think my Hardware is going to support that. My exact PC spec's are:
AMD x4 940
8gb DDR2
Gigabyte MA770-UD3
2 Velicoraptor Drives
GTX 260
I will be dual booting this machine on one of the Raptors for gaming as well.
We've been experiencing sudden host server crashes minutes after starting a fourth virtual machine. Our setup looks like:
Dell Poweredge T300
1 x Intel Xeon X3323 Quad Core 2.5 ghz
16 GB Ram
CentOS 5.3 (64 bit)
Server is running a stripped down version of CentOS 5.3 (64-bit), running only the built-in Xen Virtualization Environment. There is no other services running on the server (not samba, httpd, sendmail, cups... nothing except Xen) We've created several virtual machines, and as long as we don't start a fourth virtual machine everything runs smoothly (impresive hardware).
Each virtual server is configured as:
PARAVIRTUALIZED
1 Virtual CPU
1 GB RAM
However, 5 minutes or so after starting a fourth virtual machine, the entire host server crashes and restarts itself. Are we limited by the number of cores on the host machine CPU (4 cores)? 1 for the host and 3 for virtual machines? We've read in forums about other Xen setups running up to 11 virtual machines on less powerful hardware? (a dual core server). Should we be using FULLY VIRTUALIZED virtual machines instead? Is the number of XEN virtual machines in fact limited by the number of cores? If so, how can someone run several virtual machines on a single core host?
By the way, we were replacing a previous Dell Server (Poweredge 2600 with 512 MB Ram and a single Xeon single core processor running Open Virtuozzo). We were able to run up to 16 virtual machines at the same time. Of course none of the machines endured hard work (testing environments, etc). But hey, my point is that we expected to get a much higher number of virtual machines on this new hardware.
How do I import an existing Virtual Machines, like if I have a dualboot and make a new VM in the other OS or if I reformat and transfer the files back in.
View 4 Replies View Relatedi was getting impatient in finding a way to make some of my peripherial devices to work in linux but no luck, so i installed windows xp home in virtual box, gave it access to my usb devices and installed the drivers for the printers and scanner. but there is just one thing that i want to do now how do i get windows xp to share my printer in virtual box with other computers in the house
View 5 Replies View RelatedI have a quad cpu with 8gb ram running SUSE 10 sp2 on a raid 5 XEN host server. I have created a 250 gb partition GWMAIL in the extended partition to be the disk space for the first virtual machine OES sp1 with groupwise 8.0. I have downloaded the OS .iso's to the desktop of the host server to use for installation. When I begin to install, it hangs for 5 to 10 minutes then gives me an out of space error.
View 2 Replies View RelatedI have installed 'VirtualBox' on my lucid lynx and want to load the Microsoft XP OS. When I start the virtualization I get this message in the VirtualBox terminal---"Fatal: Could not read from the boot medium! System Halted."--- What could be the problem?
View 9 Replies View RelatedI only have one IP adress to access the server. But the server will host 3 web sites and I want them to be hosted in a vm. So, I want to setup 3 virtual machines to do it and use apache reverse proxy and vhosts to redirect the domain requested to the right vm. Now. I understand the concept, but I am not an expert to set that up....
I have an openSUSE 11.3 server. So, I have to set a virtual machine server, is that right? I have been told that I cannot do it with VMware server in oS 11.3. Can I use virtualbox for this? I only have to install virtual box? Is there a special version to install? Once the virtual machine server is install, is it trivial to create 3 vm? So, I want to know wich are the steps I have to take to set that up.
I used to use server 64, and it handled memory well with Jaunty and Karmic but with Lucid the memory usage is always high and can't run virtual machines.
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in my network, users has total access to their PCs, so theres a problem to filter (URL, ports,etc.) their virtual machines installed (they can assign self any IP, e.g.)
Id thought about use the MAC prefix in VMware VMs (00:0c:29:*), but i can only found a way through DHCP, and this isn't a good solution (they can assign a static IP to workaround...)
It will be better using firewall (iptables), but I don't found the way to add rules based in MACs with wildcards.
I setup a private network from virtual machines and one of the machines is the DHCP server for the group. I want to specify a next-server for the DHCP server but I'm having trouble connecting to any of the machines that I lease IPs to. I'm just trying to do a simple ping/ssh to 10.0.0.252 (a machine with a lease) but it doesn't seem to respond. I'm assuming I need to be able to connect to my next-server but maybe I'm wrong.
View 1 Replies View RelatedI am new to virtual machines in general, and currently playing with the XEN-based VM in CentOS 5.5. Question: if neither virt-manager nor virsh (using "virsh edit <guest name>" and changing the name in the XML file) are designed to actually change a guest's name...then what is the recommended procedure for doing this?
View 1 Replies View RelatedI'm working on a side project where I would like to install three ubuntu server systems,each with only one task.So server0 would be the apache server, server1 would be the database and server2 would be the file server.which key terms I should be researching?
View 9 Replies View RelatedI have a home server that I have been running for some years and am constantly tweaking / playing with it resulting in numerous reinstalls (and upsetting the wife!). It does nothing critical but I use it mainly for:
backing up my laptop files
XBMC
ZoneMinder
Due to the number of times that I manage to break it, I have now thought about setting it up as a base system but with virtual machines looking after the seperate 'components'. The machine is an AMD Athlon 64 X2 4200+ with 2Gb RAM. First of all do you think it is powerful enough to run XBMC and ZM in seperate virtual machines? - I appreciate the more RAM the better but at the moment I am sticking to 2Gb.
I was also wondering what sort of issues may arise for the audio and video areas I will be using. XBMC currently outputs through an HDMI cable to the TV and ZM recieves video signals through a seperate video card. ( I have had my concerns in the past that there have been conflicts in the way I have set things up!). I have read a number of guides about setting a system up with virtual machines but not really found any articles about the practicalities of using such a set up at home. before I commit and spend a week pulling my hair out trying to get it all to work!
I would like to configure and SAN disk. But I do not have a physical SAN disk. Is it possible to create and configure a Virtual SAN disk and work on it with virtual machines?I have around 400GB of space in my Laptop.
View 7 Replies View Relatedi manged to get a samba server up and running to share with my windows machines. But i still want more. My main goal is to be able to share my movies. I have a laptop hooked to my flat screen with 3TB's of external drives, thats whats acting as my server. I have ubuntu desktop installed because i use it to play movies also.
I'm looking to set up something that is a little faster than samba (yes i no trying to share through USB 2.0 external drives and a wifi connection isn't going to be real fast no matter what) but i want to be able to access my server remotely. like maybe FTP? but what i'm asking here is what protocol should i use and what programs? i was thinking gadmin-proftpd and then filezilla to access?
The only things i need out of it are: mars_nwe (Netware server under Linux) and a reverse telnet server (the dos machine is a bbs) I need the virtual server to support a very old dos machine, and while i COULD use samba for drive mapping, the VNC server I'm useing on the dos machine is a progrm called TINY which pretty much means i'm stuck useing the novell dos network stack.
how best to configure opensuse for this? I'm running the install off of the live-dvd which has quite a bit selected by default. I'm not in need of an x-server or a desktop manager, as this will be a set it up and forget about it once it works VM
I have a few mail servers, a mail log server and a web server running on Centos 5. Now I have a task: to avoid accidental crashes on the production servers while installing updates, my boss asked me to do clones (these clones will all be VMware virtual machines) of the servers (EXCLUDING the actual e-mails and log contents) and then to run those clones on VMWare Server. This way, first I will install and test updates on the clones and - if they will be running without crashes - I will apply the updates on the real production servers themselves.
I have already installed VMWare Server 2.0 I have a few questions: How do I build the virtual machines to exclude the actual mail files and mail logs? Can I use VMware Converter for this purpose, or do I have to use another program? How do I actually do this cloning? Is there a tutorial on how to do this?
I have to administer a few mail servers, a mail log server, 4 nameservers and a web server -all running on Centos 5 server distributions. Now I have a task: to avoid accidental crashes on the production servers while installing updates, my boss asked me to do clones (these clones will all be VMware virtual machines) of the servers (EXCLUDING the actual e-mails and mail log contents) and then to run those clones on VMWare Server. This way, first I will install and test updates on the clones and - if they will be running without crashes - I will apply the updates on the real production servers themselves. I have already installed VMWare Server 2.0 I have a few questions:
- How do I build the virtual machines to exclude the actual mail files and mail logs? Can I use VMware Converter for this purpose, or do I have to use another program?
- How do I actually do this cloning? Is there a tutorial on how to do this?
I am running virtualbox on a Mac Mini Server. I would like to install Debian on it and give it an internal static IP address. E.g. 192.168.1.xxx
I am looking at all the downloads. The Mac Mini Server Snow Leopard has no CD/DVD but plenty of disk space.
It will be used as a LAMP webserver, Java, Ghostscript and pdftk but also install ISPConfig on it.
I was looking at this ISO: [URL] Is this ok?
The Mac is a 64 bit Intel based machine. If I wanted 64 bit on the VirtualBox, which 64 bit ISO should I get?
I have ubuntu 11.04 with virtualbox installed. I have some old vmware virtual machines on an NTFS partition that I am able to successfully boot with virtualbox at my ubuntu desktop however, when I vnc into my desktop from a remote location and start up virtualbox and try to boot my virutal machines, I get:
Quote:
Failed to open a session for virtual machine.. the virtual machine has terminated unexpectedly during startup with exit code 0.
result code NS_ERROR_FAILURE 0x80004005
component: MACHINE
interface: IMACHINE
from googling this some people have indicated this means my username is not in the virtualbox user group, but I am logging in with the same username over vnc as I do when sitting at the machine where virtualbox works fine. the directory the machines are on is mounted, not sure why I can't boot them what else could be causing my problem? has anyone ever setup vnc4server on ubuntu and got virtualbox working?
I installed openSUSE 11.2 and works great. The only problem I have is that I can use the XEN virtual machines only as a root. If I login as a normal user and open the Virtial Machine Manager I receive the following message:Virtial Machince Manager Connection Failure:Unable to open a connection to the Xen hypervisor/daemon.
Verify that:
- A Xen host kernel was booted
- The Xen service has been started
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I'm considering setting up a virtual machine running Windows, with Ubuntu 10.10 as the host OS, for those cases where I have a Windows-only program.I understand that using a VM will lose some performance, but are there other limitations to what the OS in a virtual machine can do compared to "running on bare metal"?
For example:
Can a VM play games, like Dragon Age Origins or Civilization V? (Possibly with poorer framerates and/or lower resolution, but does it play at all?) Can a VM rip DVD/Blue-ray using AnyDVD or similar Windows program? Can a VM handle new hardware that requires dedicated drivers, but the drivers are only available for the OS running inside the VM? (Ex. graphics card, digital camera, card reader for smart card authentication.) Is it possible to say anything about "general limitations" of VMs, or is this wholly dependent on the specific VM?
finaly got my Centos host ready and configured,i have Vmware installed inside the Centos Host.how can i allow to RDP to the Virtual machines inside th Centos,
View 2 Replies View RelatedI am attempting to put some Virtual Machines on my Fedora13 box. Using KVM it just doesn't want to work quickly.... Using the v.14 LiveCD to try and install an image onto the virtual machine... took over 15 mins to get to a login screen, then I gave up attempting to log in after 5 mins from clicking the login button. I assigned the virtual box to have 1024Mb RAM and access to both CPU.
I then decided to sack it off and try and install VirtualBox... this has been a disaster. I know it's due to the fact that it wont run alongside KVM, and I've disabled KVM (as far as I am aware) - but it's still FAILING on using DKMS (Or whatever it's called - not got the error open at the mo). basically.. am I doing something wrong causing the system to run so ridiculously slowly, and how am I being thick for VirtualBox to fail to install?
I have an HP Compaq nx6125 laptop, which has an AMD Turion 64 2200MHz processor, running Windows 7 Ultimate. I have installed the VMware Workstation 6.5.2 [full] trial and am attempting to install Fedora 11 on a virtual machine.
I understand that the Turion processor is a 64 bit processor, so I downloaded the Fedora 11 x86_64 DVD iso image.
First I have to create a VMware virtual machine (VM) and choose a version for it. If I choose a version that is any of the 64 bit options (for example, "Other Linux 2.6.x kernel 64-bit", since there are specific options for RHEL but not for Fedora), I get an error message the moment I try to power on the VM and start the install, saying "The buslogic SCSI adapter is not supported for 64-bit guests in this release [...]". Then the VM just shuts down.
I guess this laptop does have a SCSI bus, but my disks are IDE and as far as I can see (System Information) the SCSI bus is not used (?).
On the other hand, if the VM I create is any of the 32-bit option versions, I get what seems to be just a warning, saying that I'm running a 64-bit guest OS (Fedora 11) on a virtual machine configured to run a 32-bit OS, and suggesting I change this to ensure the 64-bit guest OS will function correctly. What would be the risks / downsides of forcing the install anyways?
I will also ask for help on the VMware side, too, and it's not my intention to turn this into a VMware discussion, but I'm just wondering if anybody on the forum has worked with this combination (VMware 6.5.2 and Fedora 11 running within it, preferrable on an HP Compaq 6125 running Windows 7 Ultimate) ? If so, I'd really appreciate some feedback / pointers.
I used to work a lot with Linux back in the days of RH5.2, and it's been a while, plus I'm new to the virtual machine world, so bear with me here.
I am Working On Citrix Xen Server.I have Installed two Virtual Machines(Centos 5.3).Now Apache is Configured and its running on the First VM.Can I Set up a Apache Clustering On those VM?.My Aim is "If Apache On the First VM Down,then Apache on Second VM Should Automatically Start".Is there Any Tutorial to Setup Apache Clustering On Virtual machines.
View 4 Replies View RelatedI've installed a virtual machine on my computer. and I want to boot from its hard disk(which is on my /home/xen/domains/test1/disk.img). what I need is create a grub entry for this.
View 11 Replies View RelatedI created two Linux virtual machines. I created a same directory in both of them as following . /ocfs/clusterware I need to make this directory shared between them I mean , if create file in the directory in the first VM , I must see it from the second VM.
View 4 Replies View RelatedI am trying to setup one of my virtual machines in VMware with CentOS 5.2
At the welcome to Centos screen I get the following message ??
an error has occurred - no valid devices were found on which to create new file systems. Please check your hardware for the cause of this problem.