/
kubeadm.pp
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kubeadm.pp
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# Class kubernetes config kubeadm, populates kubeadm config file with params to bootstrap cluster
class kubernetes::config::kubeadm (
String $config_file = $kubernetes::config_file,
String $controller_address = $kubernetes::controller_address,
String $dns_domain = $kubernetes::dns_domain,
Boolean $manage_etcd = $kubernetes::manage_etcd,
Boolean $delegated_pki = $kubernetes::delegated_pki,
String $etcd_install_method = $kubernetes::etcd_install_method,
String $kubernetes_version = $kubernetes::kubernetes_version,
String $kubernetes_cluster_name = $kubernetes::kubernetes_cluster_name,
Optional[String] $etcd_ca_key = $kubernetes::etcd_ca_key,
Optional[String] $etcd_ca_crt = $kubernetes::etcd_ca_crt,
Optional[String] $etcdclient_key = $kubernetes::etcdclient_key,
Optional[String] $etcdclient_crt = $kubernetes::etcdclient_crt,
Optional[String] $etcdserver_crt = $kubernetes::etcdserver_crt,
Optional[String] $etcdserver_key = $kubernetes::etcdserver_key,
Optional[String] $etcdpeer_crt = $kubernetes::etcdpeer_crt,
Optional[String] $etcdpeer_key = $kubernetes::etcdpeer_key,
Array $etcd_peers = $kubernetes::etcd_peers,
String $etcd_hostname = $kubernetes::etcd_hostname,
String $etcd_ip = $kubernetes::etcd_ip,
String $cni_pod_cidr = $kubernetes::cni_pod_cidr,
Integer $kube_api_bind_port = $kubernetes::kube_api_bind_port,
String $kube_api_advertise_address = $kubernetes::kube_api_advertise_address,
Optional[String] $etcd_initial_cluster = $kubernetes::etcd_initial_cluster,
Optional[String] $etcd_discovery_srv = $kubernetes::etcd_discovery_srv,
String $etcd_initial_cluster_state = $kubernetes::etcd_initial_cluster_state,
String $etcd_compaction_method = $kubernetes::etcd_compaction_method,
Variant[Integer,String] $etcd_compaction_retention = $kubernetes::etcd_compaction_retention,
Integer $api_server_count = $kubernetes::api_server_count,
String $etcd_version = $kubernetes::etcd_version,
Integer $etcd_max_wals = $kubernetes::etcd_max_wals,
String $token = $kubernetes::token,
String $ttl_duration = $kubernetes::ttl_duration,
String $discovery_token_hash = $kubernetes::discovery_token_hash,
Optional[String] $kubernetes_ca_crt = $kubernetes::kubernetes_ca_crt,
Optional[String] $kubernetes_ca_key = $kubernetes::kubernetes_ca_key,
Optional[String] $kubernetes_front_proxy_ca_crt = $kubernetes::kubernetes_front_proxy_ca_crt,
Optional[String] $kubernetes_front_proxy_ca_key = $kubernetes::kubernetes_front_proxy_ca_key,
String $container_runtime = $kubernetes::container_runtime,
Optional[String] $sa_pub = $kubernetes::sa_pub,
Optional[String] $sa_key = $kubernetes::sa_key,
Optional[Array] $apiserver_cert_extra_sans = $kubernetes::apiserver_cert_extra_sans,
Optional[Array] $apiserver_extra_arguments = $kubernetes::apiserver_extra_arguments,
Optional[Array] $controllermanager_extra_arguments = $kubernetes::controllermanager_extra_arguments,
Optional[Array] $scheduler_extra_arguments = $kubernetes::scheduler_extra_arguments,
Optional[Array] $kubelet_extra_arguments = $kubernetes::kubelet_extra_arguments,
String $service_cidr = $kubernetes::service_cidr,
String $node_name = $kubernetes::node_name,
Optional[String] $cloud_provider = $kubernetes::cloud_provider,
Optional[String] $cloud_config = $kubernetes::cloud_config,
Optional[Hash] $apiserver_extra_volumes = $kubernetes::apiserver_extra_volumes,
Optional[Hash] $controllermanager_extra_volumes = $kubernetes::controllermanager_extra_volumes,
Optional[Hash] $kubeadm_extra_config = $kubernetes::kubeadm_extra_config,
Optional[Hash] $kubelet_extra_config = $kubernetes::kubelet_extra_config,
String $image_repository = $kubernetes::image_repository,
String $cgroup_driver = $kubernetes::cgroup_driver,
String $proxy_mode = $kubernetes::proxy_mode,
Stdlib::IP::Address $metrics_bind_address = $kubernetes::metrics_bind_address,
) {
if !($proxy_mode in ['', 'userspace', 'iptables', 'ipvs', 'kernelspace']) {
fail('Invalid kube-proxy mode! Must be one of "", userspace, iptables, ipvs, kernelspace.')
}
if !($etcd_discovery_srv or $etcd_initial_cluster) {
fail('One of $etcd_discovery_srv or $etcd_initial_cluster variables must be defined')
}
$kube_dirs = ['/etc/kubernetes','/etc/kubernetes/manifests','/etc/kubernetes/pki','/etc/kubernetes/pki/etcd']
$etcd = ['ca.crt', 'ca.key', 'client.crt', 'client.key','peer.crt', 'peer.key', 'server.crt', 'server.key']
$pki = ['ca.crt','ca.key','front-proxy-ca.crt','front-proxy-ca.key','sa.pub','sa.key']
$kube_dirs.each | String $dir | {
file { $dir :
ensure => directory,
mode => '0600',
recurse => true,
}
}
if $manage_etcd {
if !$delegated_pki {
$etcd.each | String $etcd_files | {
file { "/etc/kubernetes/pki/etcd/${etcd_files}":
ensure => file,
content => template("kubernetes/etcd/${etcd_files}.erb"),
mode => '0600',
}
}
}
if $etcd_install_method == 'wget' {
file { '/etc/systemd/system/etcd.service':
ensure => file,
content => template('kubernetes/etcd/etcd.service.erb'),
}
} else {
file { '/etc/default/etcd':
ensure => file,
content => template('kubernetes/etcd/etcd.erb'),
}
}
}
if !$delegated_pki {
$pki.each | String $pki_files | {
file { "/etc/kubernetes/pki/${pki_files}":
ensure => file,
content => template("kubernetes/pki/${pki_files}.erb"),
mode => '0600',
}
}
}
# The alpha1 schema puts Kubelet configuration in a different place.
$kubelet_extra_config_alpha1 = {
'kubeletConfiguration' => {
'baseConfig' => $kubelet_extra_config,
},
}
# Need to merge the cloud configuration parameters into extra_arguments
if $cloud_provider {
$cloud_args = $cloud_config ? {
undef => ["cloud-provider: ${cloud_provider}"],
default => ["cloud-provider: ${cloud_provider}", "cloud-config: ${cloud_config}"],
}
$apiserver_merged_extra_arguments = concat($apiserver_extra_arguments, $cloud_args)
$controllermanager_merged_extra_arguments = concat($controllermanager_extra_arguments, $cloud_args)
$scheduler_merged_extra_arguments = concat($scheduler_extra_arguments, $cloud_args)
# could check against Kubernetes 1.10 here, but that uses alpha1 config which doesn't have these options
if $cloud_config {
# The cloud config must be mounted into the apiserver and controllermanager containers
$cloud_volume = {
'cloud' => {
hostPath => $cloud_config,
mountPath => $cloud_config,
},
}
if has_key($apiserver_extra_volumes, 'cloud') or has_key($controllermanager_extra_volumes, 'cloud') {
fail('Cannot use "cloud" as volume name')
}
$apiserver_merged_extra_volumes = merge($apiserver_extra_volumes, $cloud_volume)
$controllermanager_merged_extra_volumes = merge($controllermanager_extra_volumes, $cloud_volume)
} else {
$apiserver_merged_extra_volumes = $apiserver_extra_volumes
$controllermanager_merged_extra_volumes = $controllermanager_extra_volumes
}
} else {
$apiserver_merged_extra_arguments = $apiserver_extra_arguments
$controllermanager_merged_extra_arguments = $controllermanager_extra_arguments
$scheduler_merged_extra_arguments = $scheduler_extra_arguments
$apiserver_merged_extra_volumes = $apiserver_extra_volumes
$controllermanager_merged_extra_volumes = $controllermanager_extra_volumes
}
# to_yaml emits a complete YAML document, so we must remove the leading '---'
$kubeadm_extra_config_yaml = regsubst(to_yaml($kubeadm_extra_config), '^---\n', '')
$kubelet_extra_config_yaml = regsubst(to_yaml($kubelet_extra_config), '^---\n', '')
$kubelet_extra_config_alpha1_yaml = regsubst(to_yaml($kubelet_extra_config_alpha1), '^---\n', '')
$config_version = $kubernetes_version ? {
/1\.1(0|1)/ => 'v1alpha1',
/1\.12/ => 'v1alpha3',
/1\.1(3|4|5\.[012])/ => 'v1beta1',
default => 'v1beta2',
}
file { $config_file:
ensure => file,
content => template("kubernetes/${config_version}/config_kubeadm.yaml.erb"),
mode => '0600',
}
}