Difference between revisions of "VirtualBox"

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m (Bridge and tap script)
m (Adjust math)
 
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Set up networking for VirtualBox:
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To set up networking for VirtualBox:
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local = host OS that runs VBox
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VM# = VBox that runs on local host
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Create an .sh script with the following.  Be sure to change the USER and NUMBER_OF_VM switches accordingly.
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install needed packages
 
install needed packages
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* uml-utilities
 
* uml-utilities
  
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run this script on local host as root
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;local
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:host OS that runs VBox
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;VM#
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:VBox that runs on local host
  
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Create a .sh script with the following.
 
  #!/bin/sh
 
  #!/bin/sh
 
  # set PATH for the case we are called via sudo or su root
 
  # set PATH for the case we are called via sudo or su root
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  NB=1
 
  NB=1
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  while [ $NB -lt $NUMBER_OF_VM ]
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  while [ $NB -lt $(($NUMBER_OF_VM+1)) ]
 
  do
 
  do
 
   tunctl -t tap$NB -u $USER
 
   tunctl -t tap$NB -u $USER
 
   ip link set up dev tap$NB
 
   ip link set up dev tap$NB
 
   brctl addif br0 tap$NB
 
   brctl addif br0 tap$NB
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   let NB=$NB+1
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   NB=$(($NB+1))
 
  done
 
  done
 
   
 
   
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  ip route add 10.1.1.0/24 dev br0
 
  ip route add 10.1.1.0/24 dev br0
  
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=================================== END SCRIPT ===============================================
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run this script on local host as root 
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:Be sure to change the USER and NUMBER_OF_VM switches accordingly.
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:USER should be the owner of the taps on the local host
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Your host requires a bridge for every VBox that you need to run concurrently.
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Change the IPADDR to make it UNIQUE
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Edit the VMBox's /etc/sysconfig/network-script/ifcfg-eth0 file
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=================================== START ===============================================
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# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
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DEVICE=eth0
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BOOTPROTO=noe
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HWADDR=08:00:27:BF:37:7F
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ONBOOT=yes
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NETMASCK=255.255.255.0
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IPADDR=10.1.1.15
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USERCTL=no
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PEERDNS=yes
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GATEWAY=10.1.1.15
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TYPE=Ethernet
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IPV6INIT=no
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=================================== END ===============================================
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Within Virtual Box GUI, change the networking to a single BRIDGED interface that uses br0.
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+
  
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Your host requires only one bridge, but a tap for every VBox that you need to run concurrently.  If you install too few taps then some VM's won't have networking.
  
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Change the IPADDR of each VM# to make them unique
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:Edit the VMBox's /etc/sysconfig/network-script/ifcfg-eth0 file or whichever file is appropriate for the guest OS
  
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Note: The above script needs to have the correct amount of TAPS, otherwise some VM's won't have networking.
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# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
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DEVICE=eth0
 +
BOOTPROTO=noe
 +
HWADDR=08:00:27:BF:37:7F
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ONBOOT=yes
 +
NETMASCK=255.255.255.0
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IPADDR=10.1.1.15
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USERCTL=no
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PEERDNS=yes
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GATEWAY=10.1.1.15
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TYPE=Ethernet
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IPV6INIT=no
  
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Note: Make sure to have an /etc/resolv.conf file that ONLY has the line.  Bringing eth0 up will take a very long time otherwise.
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Within Virtual Box GUI, change the networking to a single '''bridged''' interface that uses br0.
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  search localdomain
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Note: Make sure to have an /etc/resolv.conf file on the VM guest OS that is empty except for the following line.
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search localdomain
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Otherwise in the guest OS bringing eth0 up or trying to use ssh will take a very long time.
  
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Consult this wiki http://www.virtualbox.org/wiki/Advanced_Networking_Linux
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For further issues consult this wiki http://www.virtualbox.org/wiki/Advanced_Networking_Linux

Latest revision as of 00:01, 10 June 2010

To set up networking for VirtualBox:

install needed packages

  • bridge-utils
  • uml-utilities
local
host OS that runs VBox
VM#
VBox that runs on local host


Create a .sh script with the following. 

#!/bin/sh
# set PATH for the case we are called via sudo or su root

PATH=/sbin:/usr/bin:/bin:/usr/bin:/usr/sbin/
USER=michael_VM

NUMBER_OF_VM=1
# create the bridge
brctl addbr br0

# create the taps and insert them into the bridge

NB=1
while [ $NB -lt $(($NUMBER_OF_VM+1)) ]
do
  tunctl -t tap$NB -u $USER
  ip link set up dev tap$NB
  brctl addif br0 tap$NB
  NB=$(($NB+1))
done

# set the IP address and routing
ip link set up dev br0
ip addr add 10.1.1.1/24 dev br0
ip route add 10.1.1.0/24 dev br0

run this script on local host as root

Be sure to change the USER and NUMBER_OF_VM switches accordingly.
USER should be the owner of the taps on the local host

Your host requires only one bridge, but a tap for every VBox that you need to run concurrently. If you install too few taps then some VM's won't have networking.

Change the IPADDR of each VM# to make them unique

Edit the VMBox's /etc/sysconfig/network-script/ifcfg-eth0 file or whichever file is appropriate for the guest OS
# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
DEVICE=eth0
BOOTPROTO=noe
HWADDR=08:00:27:BF:37:7F
ONBOOT=yes
NETMASCK=255.255.255.0
IPADDR=10.1.1.15
USERCTL=no
PEERDNS=yes
GATEWAY=10.1.1.15
TYPE=Ethernet
IPV6INIT=no

Within Virtual Box GUI, change the networking to a single bridged interface that uses br0.

Note: Make sure to have an /etc/resolv.conf file on the VM guest OS that is empty except for the following line. 

search localdomain

Otherwise in the guest OS bringing eth0 up or trying to use ssh will take a very long time.

For further issues consult this wiki http://www.virtualbox.org/wiki/Advanced_Networking_Linux

Retrieved from "https://vlsiwiki.soe.ucsc.edu/index.php?title=VirtualBox&oldid=2688"