ubantu 24，使用kubekey v3.x部署 k8s v1.26.15 及 kubesphere v3.4.0

 三个节点：

master节点：k8s-master-01，ip：172.29.128.1
工作节点1： k8s-worker-01，ip：172.29.132.68
工作节点2： k8s-worker-02，ip：172.29.132.69

 

【前期准备】

切换 root，更新系统

sudo -i apt update && apt upgrade -y

 

设置主机名（分别对应每台机器执行）

#master节点01
hostnamectl set-hostname k8s-master-01

#工作节点01
hostnamectl set-hostname k8s-worker-01

#工作节点02
hostnamectl set-hostname k8s-worker-02

 

所有节点写入 hosts 解析

cat >> /etc/hosts << EOF
172.29.128.1    k8s-master-01
172.29.132.68   k8s-worker-01
172.29.132.69   k8s-worker-02
EOF

 

关闭防火墙、禁用 swap

# 关闭ufw
systemctl stop ufw
systemctl disable ufw

# 永久关闭swap
swapoff -a
sed -i '/swap/s/^/#/' /etc/fstab

 

加载内核模块、开启 ip 转发（k8s 必需）

modprobe overlay
modprobe br_netfilter

cat >> /etc/sysctl.conf << EOF
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF

sysctl -p

 

 安装依赖工具

apt install -y curl wget openssh-server sshpass tar unzip ipset ipvsadm

 

【SSH免密登录，仅在master节点做】

# 生成免密密钥
ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa

# 分发公钥到各节点
ssh-copy-id root@172.29.128.1  
ssh-copy-id root@172.29.132.68 
ssh-copy-id root@172.29.132.69

# 验证免密连通
ssh root@172.29.128.1 hostname
ssh root@172.29.132.68 hostname
ssh root@172.29.132.69 hostname

 

 

步骤 3：验证免密（master 执行）

ssh root@172.29.132.68
ssh root@172.29.132.69

 

设置KKZONE为国源内，永久生效（所有节点执行）

先查看一下如果/etc/profile 里有 export KKZONE=cn  这一句配置，就勿需再执行了。

echo "export KKZONE=cn" >> /etc/profile
source /etc/profile

 

【安装kubekey 3.1.9】 仅在 master 节点 k8s-master-01

【方式一：在线安装】kubekey 3.1.9是目前kubekey 3.x里最新版，最稳定，长期版本。

export KKZONE=cn
curl -sfL https://get-kk.kubesphere.io | VERSION=v3.1.9 sh -
mv kk /usr/local/bin/
kk version

 

【方式二：手动二进制包下载】kubekey 3.1.9

wget https://github.com/kubesphere/kubekey/releases/download/v3.1.9/kubekey-v3.1.9-linux-amd64.tar.gz
tar -zxvf kubekey-v3.1.9-linux-amd64.tar.gz
chmod +x kk
mv kk /usr/local/bin/
kk version

 

查看当前版本kubekey支持哪些k8s版本

kk version --show-supported-k8s

 

 生成集群配置文件（指定 k8s v1.26.15）

mkdir -p /data/kubekey
cd /data/kubekey
kk create config --with-kubernetes v1.26.15 --with-kubesphere -f k8s-cluster.yaml

 

编辑 k8s-cluaster.yaml 的k8s配置，kubesphere 配置用默认的就可以了

vim k8s-cluster.yaml

apiVersion: kubekey.kubesphere.io/v1alpha2
kind: Cluster
metadata:
  name: sample
spec:
  hosts:
    - {name: k8s-master-01, address: 172.29.128.1, internalAddress: 172.29.128.1, user: root, password: "yihan@123"}
    - {name: k8s-worker-01, address: 172.29.132.68, internalAddress: 172.29.132.68, user: root, password: "yihan@123"}
    - {name: k8s-worker-02, address: 172.29.132.69, internalAddress: 172.29.132.69, user: root, password: "yihan@123"}
  roleGroups:
    etcd:
    - k8s-master-01
    control-plane:
    - k8s-master-01
    worker:
    - k8s-worker-01
    - k8s-worker-02
    - k8s-master-01  #master节点也可以用作工作节点，也可以不用作工作节点，
  controlPlaneEndpoint:
    ## Internal loadbalancer for apiservers
    # internalLoadbalancer: haproxy

    domain: lb.kubesphere.local
    address: ""
    port: 6443
  kubernetes:
    version: v1.26.15
    clusterName: cluster.local
    autoRenewCerts: true
    containerManager: containerd
  etcd:
    type: kubekey
  network:
    plugin: calico
    kubePodsCIDR: 10.233.64.0/18
    kubeServiceCIDR: 10.233.0.0/18
    ## multus support. https://github.com/k8snetworkplumbingwg/multus-cni
    multusCNI:
      enabled: false
  registry:
    privateRegistry: ""
    namespaceOverride: ""
    registryMirrors: []
    insecureRegistries: []
  addons: []


---
#kubesphere配置省略，用默认生成的即可

 

验证yaml文件是否有语法错误

python3 -c "import yaml; yaml.safe_load(open('k8s-cluster.yaml')); print('YAML语法正常')"

输出 YAML语法正常表示语法正确。

 

一条命令安装k8s + kubesphere

kk create cluster -f k8s-cluster.yaml

 

如果生成k8s-cluster.yaml配置文件的时候没有带参数 --with-kubesphere，可以指定同时安装 kubesphere：

kk create cluster -f k8s-cluster.yaml --with-local-storage --with-kubesphere