Puppet Class: kubeinstall::kubeadm::config

Defined in:
manifests/kubeadm/config.pp

Summary

A short summary of the purpose of this class

Overview

A description of what this class does

Examples:

include kubeinstall::kubeadm::config

Parameters:

  • cri_socket (Stdlib::Unixpath) (defaults to: $kubeinstall::cri_socket) —

    CRISocket is used to retrieve container runtime info. This information will be annotated to the Node API object, for later re-use

  • service_node_port_range (Kubeinstall::Range5X) (defaults to: $kubeinstall::service_node_port_range) —

    A port range to reserve for services with NodePort visibility. Example: ‘30000-32767’. Inclusive at both ends of the range.

  • bootstrap_token (Optional[Kubeinstall::Token]) (defaults to: undef)
  • token_ttl (String[2]) (defaults to: '24h0m0s')
  • apiserver_advertise_address (Kubeinstall::Address) (defaults to: $kubeinstall::apiserver_advertise_address)
  • apiserver_bind_port (Integer) (defaults to: $kubeinstall::apiserver_bind_port)
  • node_name (Stdlib::Fqdn) (defaults to: $kubeinstall::node_name)
  • cluster_name (String) (defaults to: $kubeinstall::cluster_name)
  • kubernetes_version (Kubeinstall::Version) (defaults to: $kubeinstall::kubernetes_version)
  • service_dns_domain (Stdlib::Fqdn) (defaults to: $kubeinstall::service_dns_domain)
  • service_cidr (Stdlib::IP::Address) (defaults to: $kubeinstall::service_cidr)
  • control_plane_endpoint (Optional[Kubeinstall::Address]) (defaults to: $kubeinstall::control_plane_endpoint)
  • cgroup_driver (Kubeinstall::CgroupDriver) (defaults to: $kubeinstall::cgroup_driver) 


16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
 
# File 'manifests/kubeadm/config.pp', line 16

class kubeinstall::kubeadm::config (
  Optional[Kubeinstall::Token]
          $bootstrap_token             = undef,
  String[2]
          $token_ttl                   = '24h0m0s',
  Kubeinstall::Address
          $apiserver_advertise_address = $kubeinstall::apiserver_advertise_address,
  Integer $apiserver_bind_port         = $kubeinstall::apiserver_bind_port,
  Stdlib::Fqdn
          $node_name                   = $kubeinstall::node_name,
  Stdlib::Unixpath
          $cri_socket                  = $kubeinstall::cri_socket,
  String  $cluster_name                = $kubeinstall::cluster_name,
  Kubeinstall::Version
          $kubernetes_version          = $kubeinstall::kubernetes_version,
  Stdlib::Fqdn
          $service_dns_domain          = $kubeinstall::service_dns_domain,
  Stdlib::IP::Address
          $service_cidr                = $kubeinstall::service_cidr,
  Kubeinstall::Range5X
          $service_node_port_range     = $kubeinstall::service_node_port_range,
  Optional[Kubeinstall::Address]
          $control_plane_endpoint      = $kubeinstall::control_plane_endpoint,
  Kubeinstall::CgroupDriver
          $cgroup_driver               = $kubeinstall::cgroup_driver,
)
{
  unless $token_ttl =~ Kubeinstall::TokenTTL {
    fail("parameter 'token_ttl' expects a match for Pattern[/^([0-9]+h)?([0-5]?[0-9]m)?([0-5]?[0-9]s)?$/], got '${token_ttl}'")
  }

  [$svc_port_min, $svc_port_max] = split($service_node_port_range, '-')
  if $svc_port_min =~ Kubeinstall::Port and $svc_port_max =~ Kubeinstall::Port {
    if (0 + $svc_port_min) > (0 + $svc_port_max) {
      fail("parameter 'service_node_port_range' must be a valid port range (min < max)")
    }
  }
  else {
    fail("parameter 'service_node_port_range' must be a valid port range (min = 1, max = 65535)")
  }

  # it could be RPM package version
  $version_data = split($kubernetes_version, '[-]')
  $version = $version_data[0]

  # https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2
  $init_header  = {
    'apiVersion' => 'kubeadm.k8s.io/v1beta2',
    'kind' => 'InitConfiguration'
  }

  if $bootstrap_token {
    $bootstrap_tokens = {
      'bootstrapTokens' => [
        {
          'groups' => ['system:bootstrappers:kubeadm:default-node-token'],
          'token'  => $bootstrap_token,
          'ttl'    => $token_ttl,
          'usages' => ['signing', 'authentication'],
        }
      ],
    }
  }
  else {
    $bootstrap_tokens = {}
  }

  $kubelet_extra_args = {
    'cgroup-driver' => $cgroup_driver,
  }

  $init_base = {
    'localAPIEndpoint' => {
      'advertiseAddress' => $apiserver_advertise_address,
      'bindPort'         => $apiserver_bind_port,
    },
    'nodeRegistration' => {
      'criSocket' => $cri_socket,
      'name'      => $node_name,
      'taints'    => [
        {
          'effect' => 'NoSchedule',
          'key'    => 'node-role.kubernetes.io/master',
        }
      ],
      'kubeletExtraArgs' => $kubelet_extra_args,
    }
  }

  $cluster_header = {
    'apiVersion' => 'kubeadm.k8s.io/v1beta2',
    'kind'       => 'ClusterConfiguration'
  }

  $cluster_base = {
    'apiServer'         => {
      'timeoutForControlPlane' => '4m0s',
      'extraArgs' => {
        'service-node-port-range' => $service_node_port_range,
      },
    },
    'certificatesDir'   => '/etc/kubernetes/pki',
    'clusterName'       => $cluster_name,
    'controllerManager' => {},
    'dns'               => {
      'type' => 'CoreDNS',
    },
    'etcd'              => {
      'local' => {
        'dataDir' => '/var/lib/etcd',
      },
    },
    'imageRepository'   => 'k8s.gcr.io',
    'kubernetesVersion' => "v${version}",
    'networking'        => {
      'dnsDomain' => $service_dns_domain,
      'serviceSubnet' => $service_cidr,
    },
    'scheduler'         => {},
  }

  if $control_plane_endpoint {
    $cluster_control_plane_endpoint = {
      'controlPlaneEndpoint' => $control_plane_endpoint,
    }
  }
  else {
    $cluster_control_plane_endpoint = {}
  }

  $init_configuration = to_yaml($init_header + $bootstrap_tokens + $init_base)
  $cluster_configuration = to_yaml($cluster_header + $cluster_base + $cluster_control_plane_endpoint)

  file { '/etc/kubernetes/kubeadm-init.conf':
    ensure  => file,
    content => join([$init_configuration, $cluster_configuration], ''),
    mode    => '0600',
  }
}