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annotate kube.py @ 40:193cd3b051c6 master

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versions and ips
author drewp@bigasterisk.com
date Mon, 17 Jan 2022 12:12:02 -0800
parents 911da5e10834
children c4ffa1667504
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1 from pyinfra import host
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2 from pyinfra.facts.files import FindInFile
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3 from pyinfra.facts.server import Arch, LinuxDistribution
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4 from pyinfra.operations import files, server, systemd
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5
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6 is_pi = host.get_fact(LinuxDistribution)['name'] in ['Debian', 'Raspbian GNU/Linux']
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7
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8 # https://github.com/k3s-io/k3s/releases
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9 k3s_version = 'v1.23.1+k3s1'
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10
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11 # https://github.com/GoogleContainerTools/skaffold/releases
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12 skaffold_version = 'v1.35.2'
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13
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14 master_ip = "10.5.0.1"
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15 server_node = 'bang'
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16 nodes = ['slash', 'dash', 'frontbed', 'garage']
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17 admin_from = ['bang', 'slash', 'dash']
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19 if host.name in [nodes + [server_node]]:
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20 server.sysctl(key='net.ipv4.ip_forward', value="1", persist=True)
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21 server.sysctl(key='net.ipv6.conf.all.forwarding', value="1", persist=True)
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23 tail = 'k3s' if host.get_fact(Arch) == 'x86_64' else 'k3s-armhf'
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24 files.download(
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25 src=f'https://github.com/rancher/k3s/releases/download/{k3s_version}/{tail}',
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26 dest='/usr/local/bin/k3s',
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27 user='root',
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28 group='root',
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29 mode='755',
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30 cache_time=43000,
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31 # force=True, # to get a new version
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32 )
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34 if is_pi:
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35 old_cmdline = host.get_fact(FindInFile, path='/boot/cmdline.txt', pattern=r'.*')[0]
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36 print(repr(old_cmdline))
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37 if 'cgroup' not in old_cmdline:
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38 cmdline = old_cmdline + ' cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
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39 files.line(path='/boot/cmdline.txt', line='.*', replace=cmdline)
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40 # pi needs reboot now
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41
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42 server.shell(commands=[
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43 'update-alternatives --set iptables /usr/sbin/iptables-nft',
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44 'update-alternatives --set ip6tables /usr/sbin/ip6tables-nft',
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45 ])
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46 # needs reboot if this changed
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47
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48 # See https://github.com/rancher/k3s/issues/1802 and https://rancher.com/docs/k3s/latest/en/installation/private-registry/
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49 files.directory(path='/etc/rancher/k3s')
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50 files.template(src='templates/kube/registries.yaml.j2', dest='/etc/rancher/k3s/registries.yaml')
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51
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52 service_name = 'k3s.service' if host.name == 'bang' else 'k3s-node.service'
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53 which_conf = 'config.yaml.j2' if host.name == 'bang' else 'node-config.yaml.j2'
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54
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55 # /var/lib/rancher/k3s/server/node-token is the source of the string in secrets/k3s_token
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56 token = open('secrets/k3s_token', 'rt').read().strip()
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57 files.template(
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58 src=f'templates/kube/{which_conf}',
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59 dest='/etc/k3s_config.yaml',
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60 master_ip=master_ip,
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61 token=token,
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62 wg_ip=host.host_data['wireguard_address'],
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63 )
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64
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65 files.template(
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66 src='templates/kube/k3s.service.j2',
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67 dest=f'/etc/systemd/system/{service_name}',
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68 role='server' if host.name == 'bang' else 'agent',
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69 )
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70 systemd.service(service=service_name, daemon_reload=True, enabled=True, restarted=True)
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72 # if bang:
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73 # files.template(
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74 # src='templates/kube/Corefile.j2',
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75 # dest='/etc/k3s_coredns_config',
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76 # )
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77 # server.shell(commands=[
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78 # 'kubectl replace configmap '
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79 # '-n kube-system '
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80 # 'coredns '
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81 # '--from-file=Corefile=/etc/k3s_coredns_config '
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82 # '-o yaml '
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83 # '--dry-run=client | kubectl apply -',
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84 # ])
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85 # one-time thing at cluster create time? not sure
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86 # - name: Replace https://localhost:6443 by https://master-ip:6443
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87 # command: >-
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88 # k3s kubectl config set-cluster default
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89 # --server=https://{{ master_ip }}:6443
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90 # --kubeconfig ~{{ ansible_user }}/.kube/config
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91
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92 if host.name in admin_from:
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93 files.link(path='/usr/local/bin/kubectl', target='/usr/local/bin/k3s')
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94 files.directory(path='/home/drewp/.kube', user='drewp', group='drewp')
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95 files.line(path="/home/drewp/.zshrc", line="KUBECONFIG", replace='export KUBECONFIG=/etc/rancher/k3s/k3s.yaml')
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96
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97 files.chown(target='/etc/rancher/k3s/k3s.yaml', user='root', group='drewp')
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98 files.chmod(target='/etc/rancher/k3s/k3s.yaml', mode='640')
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99
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100 # see https://github.com/GoogleContainerTools/skaffold/releases
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101 files.download(src=f'https://storage.googleapis.com/skaffold/releases/{skaffold_version}/skaffold-linux-amd64',
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102 dest='/usr/local/bin/skaffold',
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103 user='root',
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104 group='root',
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105 mode='755',
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106 cache_time=1000)