Mercurial > code > home > repos > infra

annotate dns.py @ 88:dae714e8f620

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
reactor and temporarily cut dep on lanscape
author drewp@bigasterisk.com
date Sun, 10 Jul 2022 19:50:52 -0700
parents bf1573dd1947
children 122ba5444176
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
38
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
1 import subprocess
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
2 import tempfile
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
3
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
4 import requests
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
5 from pyinfra import host
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
6 from pyinfra.operations import apt, files, server, systemd
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
7
38
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
8
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
9 def prepare_dhcp_hosts():
88
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
10 empty = tempfile.NamedTemporaryFile(mode='wt')
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
11 return empty
38
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
12 lanscape_ip = subprocess.check_output([
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
13 'kubectl',
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
14 'get',
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
15 'svc',
79
3f7d4626234c fix kubectl call
drewp@bigasterisk.com
parents: 70
diff changeset
16 'lanscape',
3f7d4626234c fix kubectl call
drewp@bigasterisk.com
parents: 70
diff changeset
17 "-o=jsonpath={.spec.clusterIP}",
38
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
18 ],
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
19 encoding='ascii')
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
20 url = f'http://{lanscape_ip}/dnsConfig'
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
21 resp = requests.get(url)
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
22 resp.raise_for_status()
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
23 lanscape_config = resp.json()
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
24
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
25 dhcp_hosts = tempfile.NamedTemporaryFile(mode='wt', encoding='ascii')
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
26 dhcp_hosts.write("# written by pyinfra\n\n")
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
27 for row in lanscape_config['dhcp_table']:
65
49a69852a4f4 let's get in less trouble by using dhcp more universally
drewp@bigasterisk.com
parents: 61
diff changeset
28 dhcp_hosts.write(f'{row["mac"]},{row["hostname"]},{row["ip"]},24h\n')
38
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
29 dhcp_hosts.flush()
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
30 return dhcp_hosts
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
31
81
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
32 def resolv_conf_use_systemd_networkd():
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
33 files.link(path='/etc/resolv.conf', target='/run/systemd/resolve/resolv.conf', force=True)
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
34 def resolv_conf_static_file():
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
35 files.file(path='/etc/resolv.conf', present=False, force=True)
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
36 files.template(src='templates/resolv.conf.j2',
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
37 dest='/etc/resolv.conf',
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
38 # review this- it's probably a bad dep on bang. maybe both 10.5.0.1 and a public ns would be ok
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
39 ns='10.5.0.1' if host.name in ['prime', 'plus'] else '10.2.0.1',
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
40 force=True)
70
136d86d06ce6 dns improvements
drewp@bigasterisk.com
parents: 65
diff changeset
41
88
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
42 def dnsmasq_instance(dhcp_hosts, net_name):
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
43 files.directory(path=f'/opt/dnsmasq/{net_name}')
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
44 files.template(src='templates/dnsmasq/dnsmasq.conf.j2', dest=f'/opt/dnsmasq/{net_name}/dnsmasq.conf', net=net_name)
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
45 files.template(src='templates/dnsmasq/hosts.j2', dest=f'/opt/dnsmasq/{net_name}/hosts', net=net_name)
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
46 files.template(src=dhcp_hosts.name, dest=f'/opt/dnsmasq/{net_name}/dhcp_hosts', net=net_name)
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
47
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
48 files.template(src='templates/dnsmasq/dnsmasq.service.j2',
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
49 dest=f'/etc/systemd/system/dnsmasq_{net_name}.service',
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
50 net=net_name)
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
51 if net_name == '10.2':
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
52 systemd.service(service=f'dnsmasq_{net_name}', enabled=True, restarted=True, daemon_reload=True)
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
53 # 10.5 is after wireguard setup
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
54
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
55 if host.name == 'bang':
81
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
56 resolv_conf_static_file()
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
57 apt.packages(packages=['dnsmasq'])
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
58 systemd.service(service='dnsmasq', enabled=False, running=False)
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
59 files.directory(path='/opt/dnsmasq')
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
60
38
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
61 dhcp_hosts = prepare_dhcp_hosts()
4026b6b8028f get dhcp mapping from lanscape
drewp@bigasterisk.com
parents: 34
diff changeset
62
88
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
63 dnsmasq_instance(dhcp_hosts, '10.2')
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
64 dnsmasq_instance(dhcp_hosts, '10.5') # only works after wireguard is up
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
65
88
dae714e8f620 reactor and temporarily cut dep on lanscape
drewp@bigasterisk.com
parents: 81
diff changeset
66
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
67 if host.name in [
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
68 'garage',
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
69 'dash',
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
70 'slash',
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
71 'frontbed',
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
72 'prime',
70
136d86d06ce6 dns improvements
drewp@bigasterisk.com
parents: 65
diff changeset
73 'pipe'
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
74 ]:
81
bf1573dd1947 dns fixes
drewp@bigasterisk.com
parents: 79
diff changeset
75 resolv_conf_use_systemd_networkd()
34
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
76 files.template(src='templates/hosts.j2', dest='/etc/hosts')
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
77 files.template(src='templates/resolved.conf.j2', dest='/etc/systemd/resolved.conf')
d4fb38f13c79 refactor dns and some other non-net setup
drewp@bigasterisk.com
parents:
diff changeset
78 systemd.service(service='systemd-resolved.service', running=True, restarted=True)