RedhatKVM Network Configuration

Note: kvm must be configured on the basis of RedHat6later and requires at least 4 GB of memory. The cpu supports virtualization, 25 GB disk space, and 1 Gbps network interface 1: Modify file 1: copy the file (because my public ip is set on eth2) # cp/etc/sysconfig/network-scripts/ifcfg-eth2/etc/sysconfig/network-scripts/ifcfg-br02: Repair

Note: kvm must be configured on the basis of RedHat 6 later and requires at least 4 GB of memory. The cpu supports virtualization, 25 GB disk space, and 1 Gbps network interfaces.

I. modifying files

1: copy the file (because my public ip address is set on eth2)

# Cp/etc/sysconfig/network-scripts/ifcfg-eth2/etc/sysconfig/network-scripts/ifcfg-br0

2: modifying ifcfg-eth2 files

# Vi/etc/sysconfig/network-scripts/ifcfg-eth2

DEVICE = "eth2"
NM_CONTROLLED = "no"
BOOTPROTO = static
HWADDR = "00: 22: 19: B8: D9: FE"
IPV6INIT = "yes"
MTU = "1500"
ONBOOT = yes
TYPE = "Ethernet"
NAME = "System eth2"
BRIDGE = "br0"
UUID = "f2f96e91-9957-43bf-97b7-0cd67d8bb1e2"

Remove the IP address and netmask. Change NM_controlled to no, indicating that the network does not need to be managed by networkmanager. Use network Management to add the red part.

3: Modify the ifcfg-br0 File

# Vi/etc/sysconfig/network-scripts/ifcfg-br0

DEVICE = "br0"
BOOTPROTO = static
IPV6INIT = "yes"
MTU = "1500"
NM_CONTROLLED = "no"
ONBOOT = yes
TYPE = "Bridge"
IPADDR = 10.200.117.95
GATEWAY = 10.200.117.1
NETMASK = 255.255.255.0
DNS1 = 10.200.117.18

Modify or add the red part

Ii. Restart the service

Because we changed network management to network (networkmanager management is used by default), now we restart the network service, service network restart.

Iii. Confirm Configuration

Ifconfig & brctl show

[Root @ cdsh2950b ~] # Brctl show
Bridge name bridge idSTP enabledinterfaces
Br0 8000.002219b8d9fenoeth2
Vnet0
Virbr0 8000.525400c835f0yesvirbr0-nic

4. Create a virtual machine through virt-manager. I installed the system through PXE on the network, so remember the mac address and register it on jumpstart auto install.

Related reading:

RHEL6 KVM virtualization creates bridging NICs-bridge http://www.linuxidc.com/Linux/2013-08/88517.htm

RedHat Linux KVM Virtual Machine bridging http://www.linuxidc.com/Linux/2013-02/79934.htm

KVM installation/bridging settings/virtual machine creation and running http://www.linuxidc.com/Linux/2012-12/76883.htm under CentOS 5.6

The/bin/qemu-KVM problem cannot be found while installing kvm Virtual Machine with libvirt in Ubuntu

For more information about RedHat, see RedHat topic page http://www.linuxidc.com/topicnews.aspx? Tid = 10