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virtualbox [2010/11/12 09:52] aorthvirtualbox [2011/06/03 13:03] aorth
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 ====== VirtualBox ====== ====== VirtualBox ======
-VirtualBox is a free/opensource Hypervisor from Sun Microsystems.  It has performance on par with VMware and is very mature.  We have two virtualization servers, [[biovbox]] and biovboxtesting.+VirtualBox is a free, open-source hypervisor from Oracle.  It has performance on par with VMware and is very mature.  We have two virtualization servers which run VirtualBox on top of CentOS, [[biovbox]] and biovboxtest.
  
   * [[http://www.virtualbox.org|VirtualBox homepage]]   * [[http://www.virtualbox.org|VirtualBox homepage]]
   * [[http://ubuntuforums.org/showthread.php?t=646613|Tips to optimize Linux guests and hosts]]   * [[http://ubuntuforums.org/showthread.php?t=646613|Tips to optimize Linux guests and hosts]]
-====== Create a VM ====== 
-Copy an ISO to your home directory: 
-<code>$scp ubuntu-9.04-desktop-i386.iso alan@172.26.0.200:~/</code> 
-  * SSH to VM server: 172.26.0.200 
-<code>$ ssh alan@172.26.0.200</code> 
-  * start the virtualbox application 
-<code>$ VirtualBox</code> 
-  * Follow the wizard to create a VM with the following properties: 
-      - Base Memory: less than 512 MB 
-      - Network : NAT 
-      - Hard disk size: less than 30Gb 
  
-====== Networking ====== +====== Tips ====== 
-===== Bridged Networking =====+===== Optimal settings for Linux guests ===== 
 +Guest operating systems are not like host operating systems.  These settings are generally regarded as improving the performance of guest virtual machines. 
 + 
 +  * Set the IO scheduler to ''noop'': 
 +    * Edit the grub command line to set the default IO scheduler, usually in ///etc/default/grub//: ''elevator=noop'' 
 +  * Install guest additions (VirtualBox or VMware) 
 +  * Run a virtual machine-specific kernel: 
 +    * Ubuntu: linux-image-virtual 
 +  * Mount filesystems with ''noatime'' in ///etc/fstab// 
 + 
 +===== Networking ===== 
 +==== Bridged Networking ====
 If your guest is using bridged networking you MUST use this command to allow other users to use the host's physical network card.  Make sure your virtual machine is shut down and then run this command: If your guest is using bridged networking you MUST use this command to allow other users to use the host's physical network card.  Make sure your virtual machine is shut down and then run this command:
 <code>VBoxManage setextradata MyMachine VBoxInternal/Devices/pcnet/0/LUN#0/Config/RestrictAccess 0</code> <code>VBoxManage setextradata MyMachine VBoxInternal/Devices/pcnet/0/LUN#0/Config/RestrictAccess 0</code>
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 As of VirtualBox 3.1.2 this is still a [[http://www.virtualbox.org/ticket/2852|known issue]]. As of VirtualBox 3.1.2 this is still a [[http://www.virtualbox.org/ticket/2852|known issue]].
  
-===== Port Forwarding =====+==== Port Forwarding ====
  
 If your guest OS is using NAT for networking and you want to access services like Apache or SSH, you will need to enable port forwarding.  There is no GUI for this in VirtualBox, but you can use ''VBoxManage setextradata'' to make the required changes.  If you want to SSH to your VM, for example: If your guest OS is using NAT for networking and you want to access services like Apache or SSH, you will need to enable port forwarding.  There is no GUI for this in VirtualBox, but you can use ''VBoxManage setextradata'' to make the required changes.  If you want to SSH to your VM, for example:
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 <code>$ ssh -p 2223 username@172.26.0.200</code> <code>$ ssh -p 2223 username@172.26.0.200</code>
  
-====== Commonly-used commands ====== +===== Commonly-used commands ===== 
-===== List your VMs =====+==== List your VMs ====
 <code>$ VBoxManage list vms</code> <code>$ VBoxManage list vms</code>
-===== List your running VMs =====+==== List your running VMs ====
 <code>$ VBoxManage list runningvms </code> <code>$ VBoxManage list runningvms </code>
  
-====== Updating VirtualBox ====== +===== Updating VirtualBox ===== 
-===== Stop any running VMs =====+=== Stop any running VMs ===
 Either shut down or "save state" for any running VMs.  First, find any users who have "headless" VMs: Either shut down or "save state" for any running VMs.  First, find any users who have "headless" VMs:
 <code># ps aux | grep -i VBoxHeadless <code># ps aux | grep -i VBoxHeadless
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 $ VBoxManage controlvm b0237553-9653-4461-bd0e-d4d316c16d4f savestate $ VBoxManage controlvm b0237553-9653-4461-bd0e-d4d316c16d4f savestate
 $ exit</code> $ exit</code>
-===== Update VirtualBox ===== +=== Update VirtualBox ===
-==== CentOS ====+
 <code># yum update VirtualBox-3.2</code> <code># yum update VirtualBox-3.2</code>
-===== Resume VMs =====+=== Resume VMs ===
 <code># su - jmagochi <code># su - jmagochi
 $ VBoxHeadless -s nobu & $ VBoxHeadless -s nobu &
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 # su - aorth # su - aorth
 $ VBoxHeadless -s b0237553-9653-4461-bd0e-d4d316c16d4f -v off &</code> $ VBoxHeadless -s b0237553-9653-4461-bd0e-d4d316c16d4f -v off &</code>
- 
-===== Mount a CD to a running VM ===== 
-Attach an ISO to a running VM.  The CD/DVD device is on the Secondary IDE controller (--port 1), and it is the slave device (--device 1). 
-<code>VBoxManage storageattach "Debian 504" --storagectl "IDE Controller" --port 1 --device 1 --type dvddrive --medium /usr/share/virtualbox/VBoxGuestAdditions.iso</code>