pvc/client-provisioner/provisioner_lib/libvirt_schema.py

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#!/usr/bin/env python3
# libvirt_schema.py - Libvirt schema elements
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018-2019 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
# File header, containing default values for various non-device components
# Variables:
# * vm_name
# * vm_uuid
# * vm_description
# * vm_memory
# * vm_vcpus
# * vm_architecture
libvirt_header = """<domain type='kvm'>
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<name>{vm_name}</name>
<uuid>{vm_uuid}</uuid>
<description>{vm_description}</description>
<memory unit='MiB'>{vm_memory}</memory>
<vcpu>{vm_vcpus}</vcpu>
<cpu>
<topology sockets='1' cores='{vm_vcpus}' threads='1'/>
</cpu>
<os>
<type arch='{vm_architecture}' machine='pc-i440fx-2.7'>hvm</type>
<bootmenu enable='yes'/>
<boot dev='cdrom'/>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
"""
# File footer, closing devices and domain elements
libvirt_footer = """ </devices>
</domain>"""
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# Default devices for all VMs
devices_default = """ <emulator>/usr/bin/kvm</emulator>
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<controller type='usb' index='0'/>
<controller type='pci' index='0' model='pci-root'/>
<rng model='virtio'>
<rate period="1000" bytes="2048"/>
<backend model='random'>/dev/random</backend>
</rng>
"""
# Serial device
# Variables:
# * vm_name
devices_serial = """ <serial type='pty'>
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<log file='/var/log/libvirt/{vm_name}.log' append='on'/>
</serial>
<console type='pty'/>
"""
# VNC device
# Variables:
# * vm_vncport
# * vm_vnc_autoport
# * vm_vnc_bind
devices_vnc = """ <graphics type='vnc' port='{vm_vncport}' autoport='{vm_vnc_autoport}' listen='{vm_vnc_bind}'/>
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"""
# VirtIO SCSI device
devices_scsi_controller = """ <controller type='scsi' index='0' model='virtio-scsi'/>
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"""
# Disk device header
# Variables:
# * ceph_storage_secret
# * disk_pool
# * vm_name
# * disk_id
devices_disk_header = """ <disk type='network' device='disk'>
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<driver name='qemu' discard='unmap'/>
<target dev='{disk_id}' bus='scsi'/>
<auth username='libvirt'>
<secret type='ceph' uuid='{ceph_storage_secret}'/>
</auth>
<source protocol='rbd' name='{disk_pool}/{vm_name}_{disk_id}'>
"""
# Disk device coordinator element
# Variables:
# * coordinator_name
# * coordinator_ceph_mon_port
devices_disk_coordinator = """ <host name='{coordinator_name}' port='{coordinator_ceph_mon_port}'/>
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"""
# Disk device footer
devices_disk_footer = """ </source>
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</disk>
"""
# vhostmd virtualization passthrough device
devices_vhostmd = """ <disk type='file' device='disk'>
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<drive name='qemu' type='raw'/>
<source file='/dev/shm/vhostmd0'/>
<target dev='sdz' bus='usb'/>
<readonly/>
</disk>
"""
# Network interface device
# Variables:
# * eth_macaddr
# * eth_bridge
devices_net_interface = """ <interface type='bridge'>
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<mac address='{eth_macaddr}'/>
<source bridge='{eth_bridge}'/>
<model type='virtio'/>
</interface>
"""