Create kubernetes use kubeadm

 1apt-get update && apt-get install -y apt-transport-https
 2curl https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -
 3cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
 4deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
 5EOF
 6apt-get update
 7apt-get install -y kubelet kubeadm kubectl
 8#close swap
 9swapoff -a
10#remove swap mount
11vi /etc/fstab

 1cat <<EOF > /etc/yum.repos.d/kubernetes.repo
 2[kubernetes]
 3name=Kubernetes
 4baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
 5enabled=1
 6gpgcheck=1
 7repo_gpgcheck=1
 8gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
 9EOF
10#close selinux
11setenforce 0
12#disable selinux
13sed -i 's/SELINUX=enforcing/SELINUX=disabled/g'
14#disable firewalld
15systemctl disable firewalld.service
16
17dnf update && dnf install -y kubelet kubeadm kubectl
18systemctl enable --now kubelet
19#close swap
20swapoff -a
21#disable swap
22dnf remove zram-generator-defaults

 1apiVersion: kubeadm.k8s.io/v1beta3
 2bootstrapTokens:
 3  - groups:
 4      - system:bootstrappers:kubeadm:default-node-token
 5    token: abcdef.0123456789abcdef
 6    ttl: 24h0m0s
 7    usages:
 8      - signing
 9      - authentication
10kind: InitConfiguration
11localAPIEndpoint:
12  #apiserver address
13  advertiseAddress: 192.168.1.2
14  bindPort: 6443
15nodeRegistration:
16  # use containerd, docker is deprecated
17  criSocket: unix:///var/run/containerd/containerd.sock
18  imagePullPolicy: IfNotPresent
19  # node must visis
20  name: node
21  taints: null
22---
23apiServer:
24  timeoutForControlPlane: 4m0s
25apiVersion: kubeadm.k8s.io/v1beta3
26certificatesDir: /etc/kubernetes/pki
27clusterName: kubernetes
28controllerManager: {}
29imageRepository: registry.cn-hangzhou.aliyuncs.com/google_containers
30dns: {}
31etcd:
32  external:
33    # external etcd, you may use etcd provide by kubeadm
34    endpoints:
35      - https://192.168.1.2:2379
36    caFile: /etc/etcd/pki/ca.crt
37    certFile: /etc/etcd/pki/apiserver-etcd-client.crt
38    keyFile: /etc/etcd/pki/apiserver-etcd-client.key
39
40kind: ClusterConfiguration
41# latest version
42kubernetesVersion: 1.24.1
43networking:
44  dnsDomain: cluster.local
45  # here we use flannel cni plugin, you may change you use others such as calico
46  podSubnet: 10.244.0.0/16
47  serviceSubnet: 10.96.0.0/12
48scheduler: {}

 1cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
 2br_netfilter
 3overlay
 4EOF
 5
 6cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
 7net.bridge.bridge-nf-call-ip6tables = 1
 8net.bridge.bridge-nf-call-iptables = 1
 9net.ipv4.ip_forward=1
10EOF

1modprobe br_netfilter overlay

1#pull image first
2kubeadm config images pull --config kubeadm-init-config.yaml
3#init
4kubeadm init --config kubeadm-init-config.yaml
5#allow single node cluster run pod
6kubectl taint nodes --all node-role.kubernetes.io/control-plane- node-role.kubernetes.io/master-

1mkdir $HOME/.kube && sudo cp /etc/kubenertes/admin.conf $HOME/.kube/config
2kubectl get node