kubernetes1.24环境搭建实验——kubeadm方式部署k8s

部署kubernetes1.24最新版本

1、配置kubernetes的yum源

参考地址：kubernetes镜像-kubernetes下载地址-kubernetes安装教程-阿里巴巴开源镜像站 (aliyun.com)

# 配置阿里云镜像源
# https://developer.aliyun.com/mirror/kubernetes?spm=a2c6h.13651102.0.0.20dd1b11Ftu9TX
[root@master ~]$ cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

2、安装kubeadm、kubelet和kubectl

安装最新版本，需要安装指定版本时，请指定版本号

yum -y install kubeadm kubelet kubectl

3、配置kubelet

为了实现docker使用的cgroupdrive与kubelet使用的一致，建议修改以下内容：

cat >> /etc/sysconfig/kubelet << EOF
KUBELET_EXTRA_ARGS="--cgroup-driver=systemd"
KUBE_PROXY_MODE="ipvs"
EOF

4、设置开机自启

因为配置文件是在初始化时生成的，所以只需要配置开机自启即可

systemctl enable kubelet

5、提前下载好所需镜像到harbor

修改kubeadm 配置文件中的镜像地址
# kubeadm config print init-defaults > kubeadm.yaml
# vim kubeadm.yaml
imageRepository: registry.aliyuncs.com/google_containers
kubernetesVersion: 1.24.2

# kubeadm config images list --config kubeadm.yaml 
registry.aliyuncs.com/google_containers/kube-apiserver:v1.24.2
registry.aliyuncs.com/google_containers/kube-controller-manager:v1.24.2
registry.aliyuncs.com/google_containers/kube-scheduler:v1.24.2
registry.aliyuncs.com/google_containers/kube-proxy:v1.24.2
registry.aliyuncs.com/google_containers/pause:3.7
registry.aliyuncs.com/google_containers/etcd:3.5.3-0
registry.aliyuncs.com/google_containers/coredns:v1.8.6

在线环境：
或者：
# kubeadm config images pull --config kubeadm.yaml

离线环境：
# cat image_download.sh
images_list='
registry.aliyuncs.com/google_containers/kube-apiserver:v1.24.2
registry.aliyuncs.com/google_containers/kube-controller-manager:v1.24.2
registry.aliyuncs.com/google_containers/kube-scheduler:v1.24.2
registry.aliyuncs.com/google_containers/kube-proxy:v1.24.2
registry.aliyuncs.com/google_containers/pause:3.7
registry.aliyuncs.com/google_containers/etcd:3.5.3-0
registry.aliyuncs.com/google_containers/coredns:v1.8.6
'

for i in $images_list
do
	docker pull $i
done

docker save -o k8s-1.24.2.tar $images_list



下载下来的镜像push到harbor

6、部署master节点

1、修改kubeadm.yaml
# cat kubeadm.yaml 
apiVersion: kubeadm.k8s.io/v1beta3
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: abcdef.0123456789abcdef
  ttl: 24h0m0s
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 11.0.1.11                   //修改
  bindPort: 6443
nodeRegistration:
  criSocket: unix:///var/run/cri-dockerd.sock   //修改
  imagePullPolicy: IfNotPresent
  name: master                                 //修改
  taints: null
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: {}
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: harbor.likf.space/public      //修改
kind: ClusterConfiguration
kubernetesVersion: 1.24.2
networking:
  dnsDomain: cluster.local
  serviceSubnet: 10.96.0.0/12
  podSubnet: 10.224.0.0/16                    //添加
scheduler: {}

# 初始化master节点
kubeadm init --config kubeadm.yaml