antony@notes:~/kubernetes$ cat "Kubernetes-Init-with-Config.yaml.md"

Kubernetes Init with Config.yaml

2022-09-13· kubernetes ·系統工程

Kubernetes Init with Config.yaml

Prepare

To print the defaults for “init” actions use the following commands:

$ kubeadm config print init-defaults > init-config.yaml

編輯 init-config.yaml

$ nano init-config.yaml

apiVersion: kubeadm.k8s.io/v1beta3
#bootstrapTokens:                                       # remove
#- groups:                                              # remove
#  - system:bootstrappers:kubeadm:default-node-token    # remove
#  token: abcdef.0123456789abcdef                       # remove
#  ttl: 24h0m0s                                         # remove
#  usages:                                              # remove
#  - signing                                            # remove
#  - authentication                                     # remove
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 120.96.143.76                       # change from Master node IP
  bindPort: 6443
nodeRegistration:
  criSocket: unix:///run/crio/crio.sock                 # change from CRI-O Unix Socket
  imagePullPolicy: IfNotPresent
  name: c3-m1                                           # change from Master node hsotname
  taints: null
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: bobo                                        # set your clusterName
controllerManager: {}
dns: {}
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: registry.k8s.io
kind: ClusterConfiguration
kubernetesVersion: 1.25.0
networking:
  dnsDomain: k8s.bobo.org                                 # DNS domain used by Kubernetes Services.
  podSubnet: 10.244.0.0/16                                # the subnet used by Pods.
  serviceSubnet: 10.98.0.0/24                             # subnet used by Kubernetes Services.
scheduler: {}

nodeRegistration.taints，taints specifies the taints the Node API object should be registered with. If this field is unset, i.e. nil, in the kubeadm init process it will be defaulted with a control-plane taint for control-plane nodes. If you don’t want to taint your control-plane node, set this field to an empty list, i.e. taints: [] in the YAML file. This field is solely used for Node registration.

初始化 K8S

$ sudo kubeadm init --config=init-config.yaml

--config string ，Path to a kubeadm configuration file.
When executing kubeadm init with the --config option, the following configuration types could be used:
- InitConfiguration
- ClusterConfiguration
- KubeProxyConfiguration
- KubeletConfiguration
but only one between InitConfiguration and ClusterConfiguration is mandatory.
If some configuration types are not provided, or provided only partially, kubeadm will use default values

References

K8S 雲端企業永續應用系統平台建置 Kubernetes Resource Storage by 明城老師