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annotate dns.py @ 119:51a471fa4d29

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metrics on dnsmasq log errors and DHCP commands
author drewp@bigasterisk.com
date Wed, 07 Dec 2022 23:03:57 -0800
parents 6ec849f1a8c9
children 661af5652dfa
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1 from pyinfra import host
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2 from pyinfra.operations import apt, files, systemd
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5 def dnsmasq_instance(net_name, house_iface, dhcp_range, router, dhcp_hosts_filename='/dev/null'):
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6 files.directory(path=f'/opt/dnsmasq/{net_name}')
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7 files.template(src='templates/dnsmasq/dnsmasq.conf.j2',
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8 dest=f'/opt/dnsmasq/{net_name}/dnsmasq.conf',
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9 net=net_name,
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10 house_iface=house_iface,
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11 dhcp_range=dhcp_range,
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12 router=router,
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13 dhcp_enabled=net_name == '10.2' and host.name == 'pipe')
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14 files.template(src='templates/dnsmasq/hosts.j2', dest=f'/opt/dnsmasq/{net_name}/hosts', net=net_name)
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15 files.template(src=dhcp_hosts_filename, dest=f'/opt/dnsmasq/{net_name}/dhcp_hosts', net=net_name)
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17 files.template(src='templates/dnsmasq/dnsmasq.service.j2',
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18 dest=f'/etc/systemd/system/dnsmasq_{net_name}.service',
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19 net=net_name)
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20 if net_name == '10.2':
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21 systemd.service(service=f'dnsmasq_{net_name}', enabled=True, restarted=True, daemon_reload=True)
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24 files.template(src='templates/hosts.j2', dest='/etc/hosts')
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25 files.link(path='/etc/resolv.conf', target='/run/systemd/resolve/resolv.conf', force=True)
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26 files.template(src='templates/resolved.conf.j2', dest='/etc/systemd/resolved.conf')
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27 systemd.service(service='systemd-resolved.service', running=True, restarted=True)
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29 if host.name == 'bang':
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30 apt.packages(packages=['dnsmasq'])
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31 systemd.service(service='dnsmasq', enabled=False, running=False)
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32 files.directory(path='/opt/dnsmasq')
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34 dnsmasq_instance('10.5', house_iface='unused', dhcp_range='unused', router='unused') # only works after wireguard is up
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36 elif host.name == 'pipe':
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37 apt.packages(packages=['dnsmasq'])
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38 systemd.service(service='dnsmasq', enabled=False, running=False)
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39 files.directory(path='/opt/dnsmasq')
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40 dnsmasq_instance('10.2',
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41 house_iface='eth1',
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42 dhcp_range='10.2.0.121,10.2.0.200',
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43 router='10.2.0.3',
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44 dhcp_hosts_filename='templates/dnsmasq/dhcp_hosts.j2')
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45 out = '/opt/dnsmasq/10.2'
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46 # This mtail is for dhcp command counts and errors. Another monitor in lanscape/ reads the leases file.
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47 files.template(src='templates/dnsmasq/metrics.mtail.j2', dest=f'{out}/metrics.mtail')
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48 files.template(src='templates/dnsmasq/run_mtail.sh', dest=f'{out}/run_mtail.sh')
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50 files.template(src='templates/dnsmasq/dnsmasq-mtail.service.j2', dest=f'/etc/systemd/system/dnsmasq-mtail.service')
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51 systemd.service(service=f'dnsmasq-mtail', enabled=True, restarted=True, daemon_reload=True)
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53 else:
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54 pass