You are viewing documentation for Kubernetes version: v1.19
Kubernetes v1.19 documentation is no longer actively maintained. The version you are currently viewing is a static snapshot. For up-to-date documentation, see the latest version.
Synopsis
Run this command in order to set up the Kubernetes control plane
The "init" command executes the following phases:
preflight Run pre-flight checks
certs Certificate generation
/ca Generate the self-signed Kubernetes CA to provision identities for other Kubernetes components
/apiserver Generate the certificate for serving the Kubernetes API
/apiserver-kubelet-client Generate the certificate for the API server to connect to kubelet
/front-proxy-ca Generate the self-signed CA to provision identities for front proxy
/front-proxy-client Generate the certificate for the front proxy client
/etcd-ca Generate the self-signed CA to provision identities for etcd
/etcd-server Generate the certificate for serving etcd
/etcd-peer Generate the certificate for etcd nodes to communicate with each other
/etcd-healthcheck-client Generate the certificate for liveness probes to healthcheck etcd
/apiserver-etcd-client Generate the certificate the apiserver uses to access etcd
/sa Generate a private key for signing service account tokens along with its public key
kubeconfig Generate all kubeconfig files necessary to establish the control plane and the admin kubeconfig file
/admin Generate a kubeconfig file for the admin to use and for kubeadm itself
/kubelet Generate a kubeconfig file for the kubelet to use *only* for cluster bootstrapping purposes
/controller-manager Generate a kubeconfig file for the controller manager to use
/scheduler Generate a kubeconfig file for the scheduler to use
kubelet-start Write kubelet settings and (re)start the kubelet
control-plane Generate all static Pod manifest files necessary to establish the control plane
/apiserver Generates the kube-apiserver static Pod manifest
/controller-manager Generates the kube-controller-manager static Pod manifest
/scheduler Generates the kube-scheduler static Pod manifest
etcd Generate static Pod manifest file for local etcd
/local Generate the static Pod manifest file for a local, single-node local etcd instance
upload-config Upload the kubeadm and kubelet configuration to a ConfigMap
/kubeadm Upload the kubeadm ClusterConfiguration to a ConfigMap
/kubelet Upload the kubelet component config to a ConfigMap
upload-certs Upload certificates to kubeadm-certs
mark-control-plane Mark a node as a control-plane
bootstrap-token Generates bootstrap tokens used to join a node to a cluster
kubelet-finalize Updates settings relevant to the kubelet after TLS bootstrap
/experimental-cert-rotation Enable kubelet client certificate rotation
addon Install required addons for passing Conformance tests
/coredns Install the CoreDNS addon to a Kubernetes cluster
/kube-proxy Install the kube-proxy addon to a Kubernetes cluster
kubeadm init [flags]
Options
| --apiserver-advertise-address string | |
| The IP address the API Server will advertise it's listening on. If not set the default network interface will be used. | |
| --apiserver-bind-port int32 Default: 6443 | |
| Port for the API Server to bind to. | |
| --apiserver-cert-extra-sans stringSlice | |
| Optional extra Subject Alternative Names (SANs) to use for the API Server serving certificate. Can be both IP addresses and DNS names. | |
| --cert-dir string Default: "/etc/kubernetes/pki" | |
| The path where to save and store the certificates. | |
| --certificate-key string | |
| Key used to encrypt the control-plane certificates in the kubeadm-certs Secret. | |
| --config string | |
| Path to a kubeadm configuration file. | |
| --control-plane-endpoint string | |
| Specify a stable IP address or DNS name for the control plane. | |
| --cri-socket string | |
| Path to the CRI socket to connect. If empty kubeadm will try to auto-detect this value; use this option only if you have more than one CRI installed or if you have non-standard CRI socket. | |
| --dry-run | |
| Don't apply any changes; just output what would be done. | |
| --experimental-patches string | |
| Path to a directory that contains files named "target[suffix][+patchtype].extension". For example, "kube-apiserver0+merge.yaml" or just "etcd.json". "patchtype" can be one of "strategic", "merge" or "json" and they match the patch formats supported by kubectl. The default "patchtype" is "strategic". "extension" must be either "json" or "yaml". "suffix" is an optional string that can be used to determine which patches are applied first alpha-numerically. | |
| --feature-gates string | |
| A set of key=value pairs that describe feature gates for various features. Options are: IPv6DualStack=true|false (ALPHA - default=false) PublicKeysECDSA=true|false (ALPHA - default=false) | |
| -h, --help | |
| help for init | |
| --ignore-preflight-errors stringSlice | |
| A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks. | |
| --image-repository string Default: "k8s.gcr.io" | |
| Choose a container registry to pull control plane images from | |
| --kubernetes-version string Default: "stable-1" | |
| Choose a specific Kubernetes version for the control plane. | |
| --node-name string | |
| Specify the node name. | |
| --pod-network-cidr string | |
| Specify range of IP addresses for the pod network. If set, the control plane will automatically allocate CIDRs for every node. | |
| --service-cidr string Default: "10.96.0.0/12" | |
| Use alternative range of IP address for service VIPs. | |
| --service-dns-domain string Default: "cluster.local" | |
| Use alternative domain for services, e.g. "myorg.internal". | |
| --skip-certificate-key-print | |
| Don't print the key used to encrypt the control-plane certificates. | |
| --skip-phases stringSlice | |
| List of phases to be skipped | |
| --skip-token-print | |
| Skip printing of the default bootstrap token generated by 'kubeadm init'. | |
| --token string | |
| The token to use for establishing bidirectional trust between nodes and control-plane nodes. The format is [a-z0-9]{6}\.[a-z0-9]{16} - e.g. abcdef.0123456789abcdef | |
| --token-ttl duration Default: 24h0m0s | |
| The duration before the token is automatically deleted (e.g. 1s, 2m, 3h). If set to '0', the token will never expire | |
| --upload-certs | |
| Upload control-plane certificates to the kubeadm-certs Secret. | |
Options inherited from parent commands
| --rootfs string | |
| [EXPERIMENTAL] The path to the 'real' host root filesystem. | |
Last modified August 13, 2020 at 4:45 PM PST: Updating generated files for v1.19.0-rc.4 (50cfe280cd)