142 lines
3.9 KiB
Python
142 lines
3.9 KiB
Python
#!/usr/bin/env python3
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# libvirt_schema.py - Libvirt schema elements
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018-2024 Joshua M. Boniface <joshua@boniface.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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###############################################################################
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# File header, containing default values for various non-device components
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# Variables:
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# * vm_name
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# * vm_uuid
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# * vm_description
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# * vm_memory
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# * vm_vcpus
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# * vm_architecture
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libvirt_header = """<domain type='kvm'>
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<name>{vm_name}</name>
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<uuid>{vm_uuid}</uuid>
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<description>{vm_description}</description>
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<memory unit='MiB'>{vm_memory}</memory>
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<vcpu>{vm_vcpus}</vcpu>
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<cpu mode='host-model'>
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<topology sockets='1' cores='{vm_vcpus}' threads='1'/>
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</cpu>
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<os>
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<type arch='{vm_architecture}' machine='pc-i440fx-2.7'>hvm</type>
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<bootmenu enable='yes'/>
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<boot dev='cdrom'/>
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<boot dev='hd'/>
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<bios useserial='yes' rebootTimeout='5'/>
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</os>
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<features>
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<acpi/>
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<apic/>
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<pae/>
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</features>
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<clock offset='utc'/>
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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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<devices>
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<console type='pty'/>
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"""
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# File footer, closing devices and domain elements
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libvirt_footer = """ </devices>
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</domain>"""
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# Default devices for all VMs
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devices_default = """ <emulator>/usr/bin/kvm</emulator>
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<controller type='usb' index='0'/>
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<controller type='pci' index='0' model='pci-root'/>
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<rng model='virtio'>
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<rate period="1000" bytes="2048"/>
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<backend model='random'>/dev/random</backend>
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</rng>
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<channel type='unix'>
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<target type='virtio' name='org.qemu.guest_agent.0'/>
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</channel>
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"""
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# Serial device
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# Variables:
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# * vm_name
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devices_serial = """ <serial type='pty'>
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<log file='/var/log/libvirt/{vm_name}.log' append='on'/>
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</serial>
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"""
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# VNC device
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# Variables:
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# * vm_vncport
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# * vm_vnc_autoport
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# * vm_vnc_bind
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devices_vnc = """ <graphics type='vnc' port='{vm_vncport}' autoport='{vm_vnc_autoport}' listen='{vm_vnc_bind}'/>
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"""
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# VirtIO SCSI device
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devices_scsi_controller = """ <controller type='scsi' index='0' model='virtio-scsi'/>
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"""
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# Disk device header
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# Variables:
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# * ceph_storage_secret
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# * disk_pool
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# * vm_name
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# * disk_id
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devices_disk_header = """ <disk type='network' device='disk'>
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<driver name='qemu' discard='unmap' cache='none'/>
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<target dev='{disk_id}' bus='scsi'/>
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<auth username='libvirt'>
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<secret type='ceph' uuid='{ceph_storage_secret}'/>
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</auth>
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<source protocol='rbd' name='{disk_pool}/{vm_name}_{disk_id}'>
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"""
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# Disk device coordinator element
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# Variables:
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# * coordinator_name
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# * coordinator_ceph_mon_port
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devices_disk_coordinator = """ <host name='{coordinator_name}' port='{coordinator_ceph_mon_port}'/>
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"""
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# Disk device footer
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devices_disk_footer = """ </source>
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</disk>
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"""
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# vhostmd virtualization passthrough device
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devices_vhostmd = """ <disk type='file' device='disk'>
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<driver name='qemu' type='raw'/>
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<source file='/dev/shm/vhostmd0'/>
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<target dev='sdz' bus='usb'/>
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<readonly/>
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</disk>
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"""
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# Network interface device
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# Variables:
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# * eth_macaddr
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# * eth_bridge
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devices_net_interface = """ <interface type='bridge'>
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<mac address='{eth_macaddr}'/>
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<source bridge='{eth_bridge}'/>
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<model type='virtio'/>
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</interface>
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"""
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