Documentation
¶
Index ¶
- Constants
- Variables
- func CreateTempDirForKubeadm(kubernetesDir, dirName string) (string, error)
- func CreateTimestampDirForKubeadm(kubernetesDir, dirName string) (string, error)
- func EtcdSupportedVersion(supportedEtcdVersion map[uint8]string, versionString string) (etcdVersion *version.Version, warning, err error)
- func GetAPIServerVirtualIP(svcSubnetList string) (net.IP, error)
- func GetAdminKubeConfigPath() string
- func GetBootstrapKubeletKubeConfigPath() string
- func GetDNSIP(svcSubnetList string) (net.IP, error)
- func GetKubeletKubeConfigPath() string
- func GetKubernetesServiceCIDR(svcSubnetList string) (*net.IPNet, error)
- func GetStaticPodDirectory() string
- func GetStaticPodFilepath(componentName, manifestsDir string) string
Constants ¶
const ( // KubernetesDir is the directory Kubernetes owns for storing various configuration files KubernetesDir = "/etc/kubernetes" // ManifestsSubDirName defines directory name to store manifests ManifestsSubDirName = "manifests" // TempDirForKubeadm defines temporary directory for kubeadm // should be joined with KubernetesDir. TempDirForKubeadm = "tmp" // CertificateBackdate defines the offset applied to notBefore for CA certificates generated by kubeadm CertificateBackdate = time.Minute * 5 // CertificateValidity defines the validity for all the signed certificates generated by kubeadm CertificateValidity = time.Hour * 24 * 365 // DefaultCertificateDir defines default certificate directory DefaultCertificateDir = "pki" // CACertAndKeyBaseName defines certificate authority base name CACertAndKeyBaseName = "ca" // CACertName defines certificate name CACertName = "ca.crt" // CAKeyName defines certificate name CAKeyName = "ca.key" // APIServerCertAndKeyBaseName defines API's server certificate and key base name APIServerCertAndKeyBaseName = "apiserver" // APIServerCertName defines API's server certificate name APIServerCertName = "apiserver.crt" // APIServerKeyName defines API's server key name APIServerKeyName = "apiserver.key" // APIServerCertCommonName defines API's server certificate common name (CN) APIServerCertCommonName = "kube-apiserver" // APIServerKubeletClientCertAndKeyBaseName defines kubelet client certificate and key base name APIServerKubeletClientCertAndKeyBaseName = "apiserver-kubelet-client" // APIServerKubeletClientCertName defines kubelet client certificate name APIServerKubeletClientCertName = "apiserver-kubelet-client.crt" // APIServerKubeletClientKeyName defines kubelet client key name APIServerKubeletClientKeyName = "apiserver-kubelet-client.key" // APIServerKubeletClientCertCommonName defines kubelet client certificate common name (CN) APIServerKubeletClientCertCommonName = "kube-apiserver-kubelet-client" // EtcdCACertAndKeyBaseName defines etcd's CA certificate and key base name EtcdCACertAndKeyBaseName = "etcd/ca" // EtcdCACertName defines etcd's CA certificate name EtcdCACertName = "etcd/ca.crt" // EtcdCAKeyName defines etcd's CA key name EtcdCAKeyName = "etcd/ca.key" // EtcdServerCertAndKeyBaseName defines etcd's server certificate and key base name EtcdServerCertAndKeyBaseName = "etcd/server" // EtcdServerCertName defines etcd's server certificate name EtcdServerCertName = "etcd/server.crt" // EtcdServerKeyName defines etcd's server key name EtcdServerKeyName = "etcd/server.key" // EtcdListenClientPort defines the port etcd listen on for client traffic EtcdListenClientPort = 2379 // EtcdMetricsPort is the port at which to obtain etcd metrics and health status EtcdMetricsPort = 2381 // EtcdPeerCertAndKeyBaseName defines etcd's peer certificate and key base name EtcdPeerCertAndKeyBaseName = "etcd/peer" // EtcdPeerCertName defines etcd's peer certificate name EtcdPeerCertName = "etcd/peer.crt" // EtcdPeerKeyName defines etcd's peer key name EtcdPeerKeyName = "etcd/peer.key" // EtcdListenPeerPort defines the port etcd listen on for peer traffic EtcdListenPeerPort = 2380 // EtcdHealthcheckClientCertAndKeyBaseName defines etcd's healthcheck client certificate and key base name EtcdHealthcheckClientCertAndKeyBaseName = "etcd/healthcheck-client" // EtcdHealthcheckClientCertName defines etcd's healthcheck client certificate name EtcdHealthcheckClientCertName = "etcd/healthcheck-client.crt" // EtcdHealthcheckClientKeyName defines etcd's healthcheck client key name EtcdHealthcheckClientKeyName = "etcd/healthcheck-client.key" // EtcdHealthcheckClientCertCommonName defines etcd's healthcheck client certificate common name (CN) EtcdHealthcheckClientCertCommonName = "kube-etcd-healthcheck-client" // APIServerEtcdClientCertAndKeyBaseName defines apiserver's etcd client certificate and key base name APIServerEtcdClientCertAndKeyBaseName = "apiserver-etcd-client" // APIServerEtcdClientCertName defines apiserver's etcd client certificate name APIServerEtcdClientCertName = "apiserver-etcd-client.crt" // APIServerEtcdClientKeyName defines apiserver's etcd client key name APIServerEtcdClientKeyName = "apiserver-etcd-client.key" // APIServerEtcdClientCertCommonName defines apiserver's etcd client certificate common name (CN) APIServerEtcdClientCertCommonName = "kube-apiserver-etcd-client" // ServiceAccountKeyBaseName defines SA key base name ServiceAccountKeyBaseName = "sa" // ServiceAccountPublicKeyName defines SA public key base name ServiceAccountPublicKeyName = "sa.pub" // ServiceAccountPrivateKeyName defines SA private key base name ServiceAccountPrivateKeyName = "sa.key" // FrontProxyCACertAndKeyBaseName defines front proxy CA certificate and key base name FrontProxyCACertAndKeyBaseName = "front-proxy-ca" // FrontProxyCACertName defines front proxy CA certificate name FrontProxyCACertName = "front-proxy-ca.crt" // FrontProxyCAKeyName defines front proxy CA key name FrontProxyCAKeyName = "front-proxy-ca.key" // FrontProxyClientCertAndKeyBaseName defines front proxy certificate and key base name FrontProxyClientCertAndKeyBaseName = "front-proxy-client" // FrontProxyClientCertName defines front proxy certificate name FrontProxyClientCertName = "front-proxy-client.crt" // FrontProxyClientKeyName defines front proxy key name FrontProxyClientKeyName = "front-proxy-client.key" // FrontProxyClientCertCommonName defines front proxy certificate common name FrontProxyClientCertCommonName = "front-proxy-client" //used as subject.commonname attribute (CN) // AdminKubeConfigFileName defines name for the kubeconfig aimed to be used by the superuser/admin of the cluster AdminKubeConfigFileName = "admin.conf" // KubeletBootstrapKubeConfigFileName defines the file name for the kubeconfig that the kubelet will use to do // the TLS bootstrap to get itself an unique credential KubeletBootstrapKubeConfigFileName = "bootstrap-kubelet.conf" // KubeletKubeConfigFileName defines the file name for the kubeconfig that the control-plane kubelet will use for talking // to the API server KubeletKubeConfigFileName = "kubelet.conf" // ControllerManagerKubeConfigFileName defines the file name for the controller manager's kubeconfig file ControllerManagerKubeConfigFileName = "controller-manager.conf" // SchedulerKubeConfigFileName defines the file name for the scheduler's kubeconfig file SchedulerKubeConfigFileName = "scheduler.conf" // ControllerManagerUser defines the well-known user the controller-manager should be authenticated as ControllerManagerUser = "system:kube-controller-manager" // SchedulerUser defines the well-known user the scheduler should be authenticated as SchedulerUser = "system:kube-scheduler" // NodesUserPrefix defines the user name prefix as requested by the Node authorizer. NodesUserPrefix = "system:node:" // SystemPrivilegedGroup defines the well-known group for the apiservers. This group is also superuser by default // (i.e. bound to the cluster-admin ClusterRole) SystemPrivilegedGroup = "system:masters" // NodesGroup defines the well-known group for all nodes. NodesGroup = "system:nodes" // NodeBootstrapTokenAuthGroup specifies which group a Node Bootstrap Token should be authenticated in NodeBootstrapTokenAuthGroup = "system:bootstrappers:kubeadm:default-node-token" // KubeProxyClusterRoleName sets the name for the kube-proxy ClusterRole KubeProxyClusterRoleName = "system:node-proxier" // NodeBootstrapperClusterRoleName defines the name of the auto-bootstrapped ClusterRole for letting someone post a CSR NodeBootstrapperClusterRoleName = "system:node-bootstrapper" // CSRAutoApprovalClusterRoleName defines the name of the auto-bootstrapped ClusterRole for making the csrapprover controller auto-approve the CSR // Starting from v1.8, CSRAutoApprovalClusterRoleName is automatically created by the API server on startup CSRAutoApprovalClusterRoleName = "system:certificates.k8s.io:certificatesigningrequests:nodeclient" // NodeSelfCSRAutoApprovalClusterRoleName is a role defined in default 1.8 RBAC policies for automatic CSR approvals for automatically rotated node certificates NodeSelfCSRAutoApprovalClusterRoleName = "system:certificates.k8s.io:certificatesigningrequests:selfnodeclient" // NodesClusterRoleBinding defines the well-known ClusterRoleBinding which binds the too permissive system:node // ClusterRole to the system:nodes group. Since kubeadm is using the Node Authorizer, this ClusterRoleBinding's // system:nodes group subject is removed if present. NodesClusterRoleBinding = "system:node" // KubeletBaseConfigMapRole defines the base kubelet configuration ConfigMap. KubeletBaseConfigMapRole = "kubeadm:kubelet-config" // KubeProxyClusterRoleBindingName sets the name for the kube-proxy CluterRoleBinding KubeProxyClusterRoleBindingName = "kubeadm:node-proxier" // NodeKubeletBootstrap defines the name of the ClusterRoleBinding that lets kubelets post CSRs NodeKubeletBootstrap = "kubeadm:kubelet-bootstrap" // GetNodesClusterRoleName defines the name of the ClusterRole and ClusterRoleBinding to get nodes GetNodesClusterRoleName = "kubeadm:get-nodes" // NodeAutoApproveBootstrapClusterRoleBinding defines the name of the ClusterRoleBinding that makes the csrapprover approve node CSRs NodeAutoApproveBootstrapClusterRoleBinding = "kubeadm:node-autoapprove-bootstrap" // NodeAutoApproveCertificateRotationClusterRoleBinding defines name of the ClusterRoleBinding that makes the csrapprover approve node auto rotated CSRs NodeAutoApproveCertificateRotationClusterRoleBinding = "kubeadm:node-autoapprove-certificate-rotation" // 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 control-plane when doing discovery DiscoveryRetryInterval = 5 * time.Second // PatchNodeTimeout specifies how long kubeadm should wait for applying the label and taint on the control-plane before timing out PatchNodeTimeout = 2 * time.Minute // TLSBootstrapTimeout specifies how long kubeadm should wait for the kubelet to perform the TLS Bootstrap TLSBootstrapTimeout = 5 * time.Minute // TLSBootstrapRetryInterval specifies how long kubeadm should wait before retrying the TLS Bootstrap check TLSBootstrapRetryInterval = 1 * time.Second // APICallWithWriteTimeout specifies how long kubeadm should wait for api calls with at least one write APICallWithWriteTimeout = 40 * time.Second // APICallWithReadTimeout specifies how long kubeadm should wait for api calls with only reads APICallWithReadTimeout = 15 * time.Second // PullImageRetry specifies how many times ContainerRuntime retries when pulling image failed PullImageRetry = 5 // RemoveContainerRetry specifies how many times ContainerRuntime retries when removing container failed RemoveContainerRetry = 5 // DefaultControlPlaneTimeout specifies the default control plane (actually API Server) timeout for use by kubeadm DefaultControlPlaneTimeout = 4 * time.Minute // MinimumAddressesInServiceSubnet defines 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 // MaximumBitsForServiceSubnet defines maximum possible size of the service subnet in terms of bits. // For example, if the value is 20, then the largest supported service subnet is /12 for IPv4 and /108 for IPv6. // Note however that anything in between /108 and /112 will be clamped to /112 due to the limitations of the underlying allocation logic. // TODO: https://github.com/kubernetes/enhancements/pull/1881 MaximumBitsForServiceSubnet = 20 // MinimumAddressesInPodSubnet defines minimum amount of pods in the cluster. // We need at least more than services, an IPv4 /28 or IPv6 /128 subnet means 14 util addresses MinimumAddressesInPodSubnet = 14 // PodSubnetNodeMaskMaxDiff is limited to 16 due to an issue with uncompressed IP bitmap in core: // xref: #44918 // The node subnet mask size must be no more than the pod subnet mask size + 16 PodSubnetNodeMaskMaxDiff = 16 // DefaultCertTokenDuration specifies the default amount of time that the token used by upload certs will be valid // Default behaviour is 2 hours DefaultCertTokenDuration = 2 * time.Hour // CertificateKeySize specifies the size of the key used to encrypt certificates on uploadcerts phase CertificateKeySize = 32 // LabelNodeRoleControlPlane specifies that a node hosts control-plane components LabelNodeRoleControlPlane = "node-role.kubernetes.io/control-plane" // LabelExcludeFromExternalLB can be set on a node to exclude it from external load balancers. // This is added to control plane nodes to preserve backwards compatibility with a legacy behavior. LabelExcludeFromExternalLB = "node.kubernetes.io/exclude-from-external-load-balancers" // AnnotationKubeadmCRISocket specifies the annotation kubeadm uses to preserve the crisocket information given to kubeadm at // init/join time for use later. kubeadm annotates the node object with this information AnnotationKubeadmCRISocket = "kubeadm.alpha.kubernetes.io/cri-socket" // UnknownCRISocket defines the undetected or unknown CRI socket UnknownCRISocket = "unix:///var/run/unknown.sock" // KubeadmConfigConfigMap specifies in what ConfigMap in the kube-system namespace the `kubeadm init` configuration should be stored KubeadmConfigConfigMap = "kubeadm-config" // ClusterConfigurationConfigMapKey specifies in what ConfigMap key the cluster configuration should be stored ClusterConfigurationConfigMapKey = "ClusterConfiguration" // KubeProxyConfigMap specifies in what ConfigMap in the kube-system namespace the kube-proxy configuration should be stored KubeProxyConfigMap = "kube-proxy" // KubeProxyConfigMapKey specifies in what ConfigMap key the component config of kube-proxy should be stored KubeProxyConfigMapKey = "config.conf" // KubeletBaseConfigurationConfigMap specifies in what ConfigMap in the kube-system namespace the initial remote configuration of kubelet should be stored KubeletBaseConfigurationConfigMap = "kubelet-config" // KubeletBaseConfigurationConfigMapKey specifies in what ConfigMap key the initial remote configuration of kubelet should be stored KubeletBaseConfigurationConfigMapKey = "kubelet" // KubeletRunDirectory specifies the directory where the kubelet runtime information is stored. KubeletRunDirectory = "/var/lib/kubelet" // KubeletConfigurationFileName specifies the file name on the node which stores initial remote configuration of kubelet // This file should exist under KubeletRunDirectory KubeletConfigurationFileName = "config.yaml" // KubeletEnvFileName is a file "kubeadm init" writes at runtime. Using that interface, kubeadm can customize certain // kubelet flags conditionally based on the environment at runtime. Also, parameters given to the configuration file // might be passed through this file. "kubeadm init" writes one variable, with the name ${KubeletEnvFileVariableName}. // This file should exist under KubeletRunDirectory KubeletEnvFileName = "kubeadm-flags.env" // KubeletEnvFileVariableName specifies the shell script variable name "kubeadm init" should write a value to in KubeletEnvFile KubeletEnvFileVariableName = "KUBELET_KUBEADM_ARGS" // KubeletHealthzPort is the port of the kubelet healthz endpoint KubeletHealthzPort = 10248 // MinExternalEtcdVersion indicates minimum external etcd version which kubeadm supports MinExternalEtcdVersion = "3.4.13-4" // DefaultEtcdVersion indicates the default etcd version that kubeadm uses DefaultEtcdVersion = "3.5.9-0" // Etcd defines variable used internally when referring to etcd component Etcd = "etcd" // KubeAPIServer defines variable used internally when referring to kube-apiserver component KubeAPIServer = "kube-apiserver" // KubeControllerManager defines variable used internally when referring to kube-controller-manager component KubeControllerManager = "kube-controller-manager" // KubeScheduler defines variable used internally when referring to kube-scheduler component KubeScheduler = "kube-scheduler" // KubeProxy defines variable used internally when referring to kube-proxy component KubeProxy = "kube-proxy" // CoreDNS defines variable used internally when referring to the CoreDNS component CoreDNS = "CoreDNS" // Kubelet defines variable used internally when referring to the Kubelet Kubelet = "kubelet" // KubeCertificatesVolumeName specifies the name for the Volume that is used for injecting certificates to control plane components (can be both a hostPath volume or a projected, all-in-one volume) KubeCertificatesVolumeName = "k8s-certs" // KubeConfigVolumeName specifies the name for the Volume that is used for injecting the kubeconfig to talk securely to the api server for a control plane component if applicable KubeConfigVolumeName = "kubeconfig" // DefaultCIImageRepository points to image registry where CI uploads images from ci build job DefaultCIImageRepository = "gcr.io/k8s-staging-ci-images" // CoreDNSConfigMap specifies in what ConfigMap in the kube-system namespace the CoreDNS config should be stored CoreDNSConfigMap = "coredns" // CoreDNSDeploymentName specifies the name of the Deployment for CoreDNS add-on CoreDNSDeploymentName = "coredns" // CoreDNSImageName specifies the name of the image for CoreDNS add-on CoreDNSImageName = "coredns" // CoreDNSVersion is the version of CoreDNS to be deployed if it is used CoreDNSVersion = "v1.10.1" // ClusterConfigurationKind is the string kind value for the ClusterConfiguration struct ClusterConfigurationKind = "ClusterConfiguration" // InitConfigurationKind is the string kind value for the InitConfiguration struct InitConfigurationKind = "InitConfiguration" // JoinConfigurationKind is the string kind value for the JoinConfiguration struct JoinConfigurationKind = "JoinConfiguration" // YAMLDocumentSeparator is the separator for YAML documents // TODO: Find a better place for this constant YAMLDocumentSeparator = "---\n" // CIKubernetesVersionPrefix is the prefix for CI Kubernetes version CIKubernetesVersionPrefix = "ci/" // DefaultAPIServerBindAddress is the default bind address for the API Server DefaultAPIServerBindAddress = "0.0.0.0" // ControlPlaneNumCPU is the number of CPUs required on control-plane ControlPlaneNumCPU = 2 // ControlPlaneMem is the number of megabytes of memory required on the control-plane // Below that amount of RAM running a stable control plane would be difficult. ControlPlaneMem = 1700 // KubeadmCertsSecret specifies in what Secret in the kube-system namespace the certificates should be stored KubeadmCertsSecret = "kubeadm-certs" // KubeletPort is the default port for the kubelet server on each host machine. // May be overridden by a flag at startup. KubeletPort = 10250 // KubeSchedulerPort is the default port for the scheduler status server. // May be overridden by a flag at startup. KubeSchedulerPort = 10259 // KubeControllerManagerPort is the default port for the controller manager status server. // May be overridden by a flag at startup. KubeControllerManagerPort = 10257 // EtcdAdvertiseClientUrlsAnnotationKey is the annotation key on every etcd pod, describing the // advertise client URLs EtcdAdvertiseClientUrlsAnnotationKey = "kubeadm.kubernetes.io/etcd.advertise-client-urls" // KubeAPIServerAdvertiseAddressEndpointAnnotationKey is the annotation key on every apiserver pod, // describing the API endpoint (advertise address and bind port of the api server) KubeAPIServerAdvertiseAddressEndpointAnnotationKey = "kubeadm.kubernetes.io/kube-apiserver.advertise-address.endpoint" // ComponentConfigHashAnnotationKey holds the config map annotation key that kubeadm uses to store // a SHA256 sum to check for user changes ComponentConfigHashAnnotationKey = "kubeadm.kubernetes.io/component-config.hash" // ControlPlaneTier is the value used in the tier label to identify control plane components ControlPlaneTier = "control-plane" // ModeAlwaysAllow is the mode to set all requests as authorized ModeAlwaysAllow string = "AlwaysAllow" // ModeAlwaysDeny is the mode to set no requests as authorized ModeAlwaysDeny string = "AlwaysDeny" // ModeABAC is the mode to use Attribute Based Access Control to authorize ModeABAC string = "ABAC" // ModeWebhook is the mode to make an external webhook call to authorize ModeWebhook string = "Webhook" // ModeRBAC is the mode to use Role Based Access Control to authorize ModeRBAC string = "RBAC" // ModeNode is an authorization mode that authorizes API requests made by kubelets. ModeNode string = "Node" // PauseVersion indicates the default pause image version for kubeadm PauseVersion = "3.9" // CgroupDriverSystemd holds the systemd driver type CgroupDriverSystemd = "systemd" // KubeControllerManagerUserName is the username of the user that kube-controller-manager runs as. KubeControllerManagerUserName string = "kubeadm-kcm" // KubeAPIServerUserName is the username of the user that kube-apiserver runs as. KubeAPIServerUserName string = "kubeadm-kas" // KubeSchedulerUserName is the username of the user that kube-scheduler runs as. KubeSchedulerUserName string = "kubeadm-ks" // EtcdUserName is the username of the user that etcd runs as. EtcdUserName string = "kubeadm-etcd" // ServiceAccountKeyReadersGroupName is the group of users that are allowed to read the service account private key. ServiceAccountKeyReadersGroupName string = "kubeadm-sa-key-readers" )
const ( // CRISocketContainerd is the containerd CRI endpoint CRISocketContainerd = "unix:///var/run/containerd/containerd.sock" // CRISocketCRIO is the cri-o CRI endpoint CRISocketCRIO = "unix:///var/run/crio/crio.sock" // CRISocketDocker is the cri-dockerd CRI endpoint CRISocketDocker = "unix:///var/run/cri-dockerd.sock" // DefaultCRISocket defines the default CRI socket DefaultCRISocket = CRISocketContainerd )
Variables ¶
var ( // ControlPlaneTaint is the taint to apply on the PodSpec for being able to run that Pod on the control-plane ControlPlaneTaint = v1.Taint{ Key: LabelNodeRoleControlPlane, Effect: v1.TaintEffectNoSchedule, } // ControlPlaneToleration is the toleration to apply on the PodSpec for being able to run that Pod on the control-plane ControlPlaneToleration = v1.Toleration{ Key: LabelNodeRoleControlPlane, Effect: v1.TaintEffectNoSchedule, } // ControlPlaneComponents defines the control-plane component names ControlPlaneComponents = []string{KubeAPIServer, KubeControllerManager, KubeScheduler} // MinimumControlPlaneVersion specifies the minimum control plane version kubeadm can deploy MinimumControlPlaneVersion = getSkewedKubernetesVersion(-1) // MinimumKubeletVersion specifies the minimum version of kubelet which kubeadm supports MinimumKubeletVersion = getSkewedKubernetesVersion(-1) // CurrentKubernetesVersion specifies current Kubernetes version supported by kubeadm CurrentKubernetesVersion = getSkewedKubernetesVersion(0) // SupportedEtcdVersion lists officially supported etcd versions with corresponding Kubernetes releases SupportedEtcdVersion = map[uint8]string{ 22: "3.5.9-0", 23: "3.5.9-0", 24: "3.5.9-0", 25: "3.5.9-0", 26: "3.5.9-0", 27: "3.5.9-0", 28: "3.5.9-0", } // KubeadmCertsClusterRoleName sets the name for the ClusterRole that allows // the bootstrap tokens to access the kubeadm-certs Secret during the join of a new control-plane KubeadmCertsClusterRoleName = fmt.Sprintf("kubeadm:%s", KubeadmCertsSecret) // StaticPodMirroringDefaultRetry is used a backoff strategy for // waiting for static pods to be mirrored to the apiserver. StaticPodMirroringDefaultRetry = wait.Backoff{ Steps: 30, Duration: 1 * time.Second, Factor: 1.0, Jitter: 0.1, } )
Functions ¶
func CreateTempDirForKubeadm ¶
CreateTempDirForKubeadm is a function that creates a temporary directory under /etc/kubernetes/tmp (not using /tmp as that would potentially be dangerous)
func CreateTimestampDirForKubeadm ¶
CreateTimestampDirForKubeadm is a function that creates a temporary directory under /etc/kubernetes/tmp formatted with the current date
func EtcdSupportedVersion ¶
func EtcdSupportedVersion(supportedEtcdVersion map[uint8]string, versionString string) (etcdVersion *version.Version, warning, err error)
EtcdSupportedVersion returns officially supported version of etcd for a specific Kubernetes release If passed version is not in the given list, the function returns the nearest version with a warning
func GetAPIServerVirtualIP ¶
GetAPIServerVirtualIP returns the IP of the internal Kubernetes API service
func GetAdminKubeConfigPath ¶
func GetAdminKubeConfigPath() string
GetAdminKubeConfigPath returns the location on the disk where admin kubeconfig is located by default
func GetBootstrapKubeletKubeConfigPath ¶
func GetBootstrapKubeletKubeConfigPath() string
GetBootstrapKubeletKubeConfigPath returns the location on the disk where bootstrap kubelet kubeconfig is located by default
func GetKubeletKubeConfigPath ¶
func GetKubeletKubeConfigPath() string
GetKubeletKubeConfigPath returns the location on the disk where kubelet kubeconfig is located by default
func GetKubernetesServiceCIDR ¶
GetKubernetesServiceCIDR returns the default Service CIDR for the Kubernetes internal service
func GetStaticPodDirectory ¶
func GetStaticPodDirectory() string
GetStaticPodDirectory returns the location on the disk where the Static Pod should be present
func GetStaticPodFilepath ¶
GetStaticPodFilepath returns the location on the disk where the Static Pod should be present
Types ¶
This section is empty.