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annotate dns.py @ 44:e3249dd163fc

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turn on 10.5 dnsmasq service
author drewp@bigasterisk.com
date Mon, 14 Feb 2022 21:52:47 -0800
parents 4026b6b8028f
children 8945bf71da22
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1 import subprocess
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2 import tempfile
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3
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4 import requests
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5 from pyinfra import host
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6 from pyinfra.operations import apt, files, server, systemd
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7
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9 def prepare_dhcp_hosts():
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10 lanscape_ip = subprocess.check_output([
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11 'kubectl',
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12 'get',
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13 'svc',
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14 '--field-selector=metadata.name=lanscape',
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15 "-o=jsonpath={.items[0].spec.clusterIP}",
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16 ],
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17 encoding='ascii')
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18 url = f'http://{lanscape_ip}/dnsConfig'
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19 resp = requests.get(url)
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20 resp.raise_for_status()
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21 lanscape_config = resp.json()
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22
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23 dhcp_hosts = tempfile.NamedTemporaryFile(mode='wt', encoding='ascii')
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24 dhcp_hosts.write("# written by pyinfra\n\n")
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25 for row in lanscape_config['dhcp_table']:
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26 dhcp_hosts.write(f'{row["mac"]},{row["hostname"]},{row["ip"]},infinite\n')
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27 dhcp_hosts.flush()
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28 return dhcp_hosts
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31 if host.name == 'bang':
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32 apt.packages(packages=['dnsmasq'])
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33 systemd.service(service='dnsmasq', enabled=False, running=False)
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34 files.directory(path='/opt/dnsmasq')
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36 dhcp_hosts = prepare_dhcp_hosts()
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38 for net_name in ['10.1', '10.2', '10.5']:
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39 files.directory(path=f'/opt/dnsmasq/{net_name}')
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40 files.template(src='templates/dnsmasq/dnsmasq.conf.j2', dest=f'/opt/dnsmasq/{net_name}/dnsmasq.conf', net=net_name)
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41 files.template(src='templates/dnsmasq/hosts.j2', dest=f'/opt/dnsmasq/{net_name}/hosts', net=net_name)
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42 files.template(src=dhcp_hosts.name, dest=f'/opt/dnsmasq/{net_name}/dhcp_hosts', net=net_name)
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44 files.template(src='templates/dnsmasq/dnsmasq.service.j2',
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45 dest=f'/etc/systemd/system/dnsmasq_{net_name}.service',
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46 net=net_name)
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47 systemd.service(service=f'dnsmasq_{net_name}', enabled=True, restarted=True, daemon_reload=True)
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49 if host.name in [
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50 'garage',
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51 'dash',
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52 'slash',
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53 'frontbed',
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54 'prime',
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55 ]:
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56 files.template(src='templates/hosts.j2', dest='/etc/hosts')
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58 files.link(path='/etc/resolv.conf', target='/run/systemd/resolve/resolv.conf')
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59 files.template(src='templates/resolved.conf.j2', dest='/etc/systemd/resolved.conf')
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61 systemd.service(service='systemd-resolved.service', running=True, restarted=True)