Kapisi/bin/generate-systemd-vms.py

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2022-04-19 12:01:03 -05:00
#!/usr/bin/env python3
# File: generate-systemd-vms.py
#
# Description: This file generates the systemd.service files that run our VM's
#
# Package: AniNIX/Ubiqtorate
# Copyright: WTFPL
#
# Author: DarkFeather <darkfeather@aninix.net>
import os
import shutil
import sys
import yaml
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filepath="../roles/Node/files/vm-definitions/"
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def WriteVMFile(content,hosttype,hostclass):
### Create the service files for the hosts
# param content: the yaml content to parse
# param hosttype: managed or unmanaged
# param hostclass: the type of host as classified in the yaml
global filepath
for host in content['all']['children'][hosttype]['children'][hostclass]['hosts']:
cores = 0
memory = 0
vnc = 0
disks = ''
mac = ''
bridge = ''
# Make sure the host definition has all the critera
try:
cores = str(content['all']['children'][hosttype]['children'][hostclass]['hosts'][host]['cores'])
memory = str(content['all']['children'][hosttype]['children'][hostclass]['hosts'][host]['memory'])
vnc = str(content['all']['children'][hosttype]['children'][hostclass]['hosts'][host]['vnc'])
disks = ' '.join(content['all']['children'][hosttype]['children'][hostclass]['hosts'][host]['disks'])
mac = content['all']['children'][hosttype]['children'][hostclass]['hosts'][host]['mac']
bridge = content['all']['children'][hosttype]['children'][hostclass]['hosts'][host]['bridge']
except Exception as e:
print('Host ' + host + " doesn't have the attributes needed to be a VM -- skipping.")
print(e)
1 == 1
# Write the file.
with open(filepath+host+'-vm.service','w') as vmfile:
vmfile.write('[Unit]\n')
vmfile.write('Description=AniNIX/' + host + '\n')
vmfile.write('After=network.target\n')
vmfile.write('\n')
vmfile.write('[Service]\n')
vmfile.write('ExecStart=/usr/sbin/qemu-system-x86_64 -name AniNIX/' + host + ' -machine type=pc,accel=kvm')
if 'uefi' in content['all']['children'][hosttype]['children'][hostclass]['hosts'][host].keys(): vmfile.write(' -bios /usr/share/edk2-ovmf/x64/OVMF.fd')
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vmfile.write(' -cpu host -smp ' + cores + ' ' + disks + ' -net nic,macaddr=' + mac + ',model=virtio -net bridge,br=' + bridge + ' -vga std -nographic -vnc :' + str(vnc) + ' -m size=' + str(memory) + 'G -device virtio-rng-pci\n')
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vmfile.write('ExecReload=/bin/kill -HUP $MAINPID\n')
vmfile.write('KillMode=process\n')
vmfile.write('Restart=always\n')
vmfile.write('User=root\n')
vmfile.write('Group=root\n')
vmfile.write('\n')
vmfile.write('[Install]\n')
vmfile.write('WantedBy=multi-user.target\n')
print(host+'-vm.service')
def GenerateFiles(file):
### Open the file and parse it
# param file: the file to work on
global filepath
try:
shutil.rmtree(filepath)
except:
1 == 1
finally:
os.mkdir(filepath)
# Parse the yaml
with open(file, 'r') as stream:
content = yaml.safe_load(stream)
# Add service files for each host
WriteVMFile(content,'managed','virtual')
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WriteVMFile(content,'unmanaged','ovas')
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WriteVMFile(content,'unmanaged','test_ovas')
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if __name__ == '__main__':
if len(sys.argv) != 2:
print("You need to supply an inventory file.")
sys.exit(1)
GenerateFiles(sys.argv[1])
sys.exit(0)