constants

const (
	// KubernetesDir is the directory kubernetes owns for storing various configuration files
	KubernetesDir = "/etc/kubernetes"

	CACertAndKeyBaseName = "ca"
	CACertName           = "ca.crt"
	CAKeyName            = "ca.key"

	APIServerCertAndKeyBaseName = "apiserver"
	APIServerCertName           = "apiserver.crt"
	APIServerKeyName            = "apiserver.key"

	APIServerKubeletClientCertAndKeyBaseName = "apiserver-kubelet-client"
	APIServerKubeletClientCertName           = "apiserver-kubelet-client.crt"
	APIServerKubeletClientKeyName            = "apiserver-kubelet-client.key"

	ServiceAccountKeyBaseName    = "sa"
	ServiceAccountPublicKeyName  = "sa.pub"
	ServiceAccountPrivateKeyName = "sa.key"

	FrontProxyCACertAndKeyBaseName = "front-proxy-ca"
	FrontProxyCACertName           = "front-proxy-ca.crt"
	FrontProxyCAKeyName            = "front-proxy-ca.key"

	FrontProxyClientCertAndKeyBaseName = "front-proxy-client"
	FrontProxyClientCertName           = "front-proxy-client.crt"
	FrontProxyClientKeyName            = "front-proxy-client.key"

	AdminKubeConfigFileName             = "admin.conf"
	KubeletKubeConfigFileName           = "kubelet.conf"
	ControllerManagerKubeConfigFileName = "controller-manager.conf"
	SchedulerKubeConfigFileName         = "scheduler.conf"

	// Important: a "v"-prefix shouldn't exist here; semver doesn't allow that
	MinimumControlPlaneVersion = "1.6.0-beta.3"

	ControllerManagerUser = "system:kube-controller-manager"
	SchedulerUser         = "system:kube-scheduler"
	MastersGroup          = "system:masters"
	NodesGroup            = "system:nodes"

	// Constants for what we name our ServiceAccounts with limited access to the cluster in case of RBAC
	KubeDNSServiceAccountName   = "kube-dns"
	KubeProxyServiceAccountName = "kube-proxy"

	// APICallRetryInterval defines how long kubeadm should wait before retrying a failed API operation
	APICallRetryInterval = 500 * time.Millisecond
	// DiscoveryRetryInterval specifies how long kubeadm should wait before retrying to connect to the master when doing discovery
	DiscoveryRetryInterval = 5 * time.Second

	// Minimum amount of nodes the Service subnet should allow.
	// We need at least ten, because the DNS service is always at the tenth cluster clusterIP
	MinimumAddressesInServiceSubnet = 10

	// DefaultTokenDuration specifies the default amount of time that a bootstrap token will be valid
	// Default behaviour is "never expire" == 0
	DefaultTokenDuration = 0

	// LabelNodeRoleMaster specifies that a node is a master
	// It's copied over to kubeadm until it's merged in core: https://github.com/kubernetes/kubernetes/pull/39112
	LabelNodeRoleMaster = "node-role.kubernetes.io/master"

	// MinExternalEtcdVersion indicates minimum external etcd version which kubeadm supports
	MinExternalEtcdVersion = "3.0.14"

	// DefaultAdmissionControl specifies the default admission control options that will be used
	DefaultAdmissionControl = "" /* 126-byte string literal not displayed */
)