Add instructions to deploy bifrost on virsh
Change-Id: I0005acde1b193f2ee6593dcf97a6f3b0a0760547
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Yolanda Robla Mota
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@ -2,4 +2,6 @@ Tools
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=====
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This directory contains some tooling for local developer testing, such as
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This directory contains some tooling for local developer testing, such as
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vagrant config files. These are not intended for production use.
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vagrant config files or libvirt templates.
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These are not intended for production use.
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59
tools/virsh_dev_env/README.md
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59
tools/virsh_dev_env/README.md
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Deploying with libvirt
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======================
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In order to deploy bifrost with libvirt, but managing baremetal servers, a special
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network config needs to be setup.
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Two networks need to be created:
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- default network, that will be a standard virtual network, using NAT.
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- provisioning network, that will be used for PXE boot. As we need to setup
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a dhcp server on bifrost guest, creating a virtual network will give
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conflicts between guest and host. So to avoid it, we can define a
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network that uses macvtap interfaces, associated with the physical
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interface.
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Please note that you will need to have macvlan enabled on your kernel.
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When creating the guest, a minimum of 8GB of memory is needed in order to
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build disk images properly. Also when defining the interfaces for the guest, the two
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networks that have been created need to be attached.
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These sample commands will spin up a bifrost vm based on centos:
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virsh net-define --file network/default.xml
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virsh net-start default
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virsh net-define --file network/br_direct.xml
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virsh net-start br_direct
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virsh define --file vm/baremetal.xml
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virsh start baremetal
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virsh console baremetal
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Where to get guest images
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=========================
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In order to create the guest VMs, you will need a cloud image
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for the distro you want to deploy. You will need to download the
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guest image on a directory on the host, and then in the template
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for the VM, you can specify it on the disk section, as shown
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in the example template.
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Please follow the information on this link to get the images:
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http://docs.openstack.org/image-guide/obtain-images.html
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Add credentials to guest image
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==============================
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Normally guest images come without user and password, they rely on ssh to
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allow access. In this case, it can be useful to enable ssh access to some
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user from host to guest. A way to do that, is creating a config drive
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and reference it on the template for the guest VM.
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A useful script to generate config drives can be found at:
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https://github.com/larsks/virt-utils/blob/master/create-config-drive
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Relying on this script, a config drive can be created with:
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create-config-drive -k ~/.ssh/id_rsa.pub config.iso
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And then this ISO can be referenced on the guest VM template.
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tools/virsh_dev_env/network/br_direct.xml
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tools/virsh_dev_env/network/br_direct.xml
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<network>
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<name>br_direct</name>
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<forward mode='bridge'>
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<interface dev="eno1" />
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</forward>
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</network>
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tools/virsh_dev_env/network/default.xml
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tools/virsh_dev_env/network/default.xml
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<network connections='1'>
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<name>default</name>
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<uuid>76d95e35-3cf6-4a43-bf31-9d10717982e6</uuid>
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<forward mode='nat'>
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<nat>
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<port start='1024' end='65535'/>
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</nat>
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</forward>
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<bridge name='virbr0' stp='on' delay='0'/>
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<ip address='192.168.122.1' netmask='255.255.255.0'>
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<dhcp>
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<range start='192.168.122.2' end='192.168.122.254'/>
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</dhcp>
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</ip>
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</network>
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101
tools/virsh_dev_env/vm/baremetal.xml
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101
tools/virsh_dev_env/vm/baremetal.xml
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<domain type='kvm' id='33'>
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<name>baremetal</name>
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<uuid>99714ffa-c947-4ff9-818d-ca11ee152494</uuid>
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<memory unit='KiB'>8388608</memory>
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<currentMemory unit='KiB'>8388608</currentMemory>
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<vcpu placement='static'>2</vcpu>
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<resource>
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<partition>/machine</partition>
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</resource>
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<features>
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<acpi/>
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<apic/>
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</features>
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<cpu mode='custom' match='exact'>
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<model fallback='allow'>Broadwell</model>
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</cpu>
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<clock offset='utc'>
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<timer name='rtc' tickpolicy='catchup'/>
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<timer name='pit' tickpolicy='delay'/>
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<timer name='hpet' present='no'/>
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</clock>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>restart</on_crash>
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<pm>
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<suspend-to-mem enabled='no'/>
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<suspend-to-disk enabled='no'/>
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</pm>
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<devices>
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<emulator>/usr/libexec/qemu-kvm</emulator>
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<disk type='file' device='disk'>
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<driver name='qemu' type='qcow2'/>
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<source file='/opt/CentOS-7-x86_64-GenericCloud-1503.qcow2'/>
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<backingStore/>
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<target dev='hda' bus='ide'/>
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<alias name='ide0-0-0'/>
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<address type='drive' controller='0' bus='0' target='0' unit='0'/>
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</disk>
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<disk type='file' device='cdrom'>
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<source file='/opt/config.iso' />
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<target dev='hdb' bus='ide'/>
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<readonly />
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</disk>
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<controller type='usb' index='0' model='ich9-ehci1'>
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<alias name='usb'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>
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</controller>
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<controller type='usb' index='0' model='ich9-uhci1'>
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<alias name='usb'/>
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<master startport='0'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>
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</controller>
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<controller type='usb' index='0' model='ich9-uhci2'>
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<alias name='usb'/>
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<master startport='2'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>
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</controller>
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<controller type='usb' index='0' model='ich9-uhci3'>
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<alias name='usb'/>
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<master startport='4'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>
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</controller>
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<controller type='pci' index='0' model='pci-root'>
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<alias name='pci.0'/>
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</controller>
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<controller type='ide' index='0'>
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<alias name='ide'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
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</controller>
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<interface type='network'>
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<mac address='00:16:3e:1a:b3:4a'/>
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<source network='default' bridge='virbr0'/>
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<target dev='vnet0'/>
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<model type='virtio'/>
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<alias name='net0'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
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</interface>
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<interface type='network'>
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<source network='br_direct'/>
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<model type='virtio'/>
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</interface>
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<serial type='pty'>
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<source path='/dev/pts/1'/>
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<target type='isa-serial' port='0'/>
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<alias name='serial0'/>
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</serial>
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<console type='pty' tty='/dev/pts/1'>
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<source path='/dev/pts/1'/>
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<target type='serial' port='0'/>
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<alias name='serial0'/>
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</console>
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<memballoon model='virtio'>
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<alias name='balloon0'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
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</memballoon>
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</devices>
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<seclabel type='dynamic' model='selinux' relabel='yes'>
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<label>system_u:system_r:svirt_t:s0:c71,c869</label>
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<imagelabel>system_u:object_r:svirt_image_t:s0:c71,c869</imagelabel>
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</seclabel>
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</domain>
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