- Disable selinux
setenforce 1
sed -i --follow-symlinks 's/^SELINUX=.*/SELINUX=disabled/g' /etc/sysconfig/selinux
- Stop firewall-cmd
systemctl disable firewalld
systemctl stop firewalld
- Now we'll bridge your primary network interface. This bridge will also be used for our virtual machines. In this example we'll create a bridge named "bridge0". We'll then bridge interface "eth0" to "bridge0" followed by a server reboot.
- Copy ifcfg-eth0 to ifcfg-bridge0
cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-bridge0
- Edit /etc/sysconfig/network/network-scripts/ifcfg-bridge0.
- Change DEVICE=eth0 to DEVICE=bridge0
- Change TYPE=Ethernet to TYPE="Bridge"
DEVICE=bridge0
ONBOOT=yes
TYPE="Bridge"
BOOTPROTO=none
IPADDR=10.41.175.178
NETMASK=255.255.255.0
DNS1=4.2.2.2
DNS2=8.8.8.8
- Edit /etc/sysconfig/network-scripts/ifcfg-eth0 and bridge it to bridge0
DEVICE=eth0
ONBOOT=yes
TYPE=Ethernet
BOOTPROTO=none
BRIDGE="bridge0"
DNS1=4.2.2.2
DNS2=8.8.8.8
- Reboot the server
reboot
- Once the server comes up, install packages needed for kvm/libvirt/qemu:
yum -y install qemu-kvm libvirt virt-install bridge-utils bind-utils \
virt-manager wget net-tools virt-viewer genisoimage epel-release
- Enabled and start libvirtd
systemctl enable libvirtd
systemctl start libvirtd
- Verify
[root@kvm-host ~]# virsh nodeinfo
CPU model: x86_64
CPU(s): 8
CPU frequency: 1995 MHz
CPU socket(s): 2
Core(s) per socket: 4
Thread(s) per core: 1
NUMA cell(s): 1
Memory size: 16772028 KiB
cd /tmp
wget http://kimchi-project.github.io/wok/downloads/latest/wok.el7.centos.noarch.rpm
wget http://kimchi-project.github.io/gingerbase/downloads/latest/ginger-base.el7.centos.noarch.rpm
wget http://kimchi-project.github.io/kimchi/downloads/latest/kimchi.el7.centos.noarch.rpm
yum -y install wok.el7.centos.noarch.rpm
yum -y install ginger-base.el7.centos.noarch.rpm
yum -y install kimchi.el7.centos.noarch.rpm
sed -i 's/^#session_timeout = .*/session_timeout = 1440/g' /etc/wok/wok.conf
systemctl enable wokd
systemctl start wokd
- Go to https://YOUR_KVM_SERVER:8001 in your web browswer and login using root creds
- Make dir to hold coreos image and guest images
mkdir -p /vmstorage/coreos
- Download CoreOS QEMU Image
wget https://stable.release.core-os.net/amd64-usr/current/coreos_production_qemu_image.img.bz2 -O - | bzcat > /vmstorage/coreos/os.img
- Create cloud-config template. Can download mine from here.
wget https://raw.githubusercontent.com/thedonvaughn/kvm-coreos/master/user_data -O /vmstorage/coreos/user_data
In this example we'll create a VM called coreos-1.
- Create coreos-1 image directory
mkdir -p /vmstorage/coreos/coreos-1/
- Copy user_data cloud-config template to new image dir
cp /vmstorage/coreos/user_data /vmstorage/coreos/coreos-1/
cd /vmstorage/coreos/coreos-1/
- Edit /vmstorage/coreos/coreos-1/user_data. Make sure to add your public ssh key, set your hostname, and configure your network.
- You can set the 'core' user password with the following:
python -c 'import crypt,getpass; print(crypt.crypt(getpass.getpass(), crypt.mksalt(crypt.METHOD_SHA512)))'
- Create configdrive.iso from the edited user_data template
cd /vmstorage/coreos/coreos-1/
mkdir -p cdrom/openstack/latest
cp /vmstorage/coreos/coreos-1/user_data /vmstorage/coreos/coreos-1/cdrom/openstack/latest/
mkisofs -R -V config-2 -o ./configdrive.iso ./cdrom/
- Create KVM vm for coreos-1
virt-install --connect qemu:///system --import --name coreos-1 --ram 1024 --vcpus 1 --os-type=linux --os-variant=virtio26 --disk path=/vmstorage/coreos/coreos-1/os.img,format=raw,bus=virtio --disk path=/vmstorage/coreos/coreos-1/configdrive.iso,device=cdrom,format=raw,bus=ide --network=bridge=bridge0 --accelerate --graphics vnc,listen=0.0.0.0 --noautoconsole
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