基於Ubuntu-22.04安裝K8s-v1.28.2實驗（一）部署K8s

1 環境配置要求：

apt使用阿里雲的源
設置主機名及解析，設定時鐘同步，關閉swap和防火牆，開啓IPv4轉發。

更改機器名

hostnamectl set-hostname master

2.關閉swap和防火牆

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

3.開啓IPv4轉發

每臺機器都要設置

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF

sysctl --system

sudo modprobe br_netfilter
echo '1' | sudo tee /proc/sys/net/bridge/bridge-nf-call-iptables
sudo nano /etc/sysctl.conf
在文件的末尾添加以下兩行配置
net.bridge.bridge-nf-call-iptables = 1 
net.ipv4.ip_forward = 1

sudo sysctl -p

sudo nano /etc/modules-load.d/br_netfilter.conf
在文件中添加以下內容：
br_netfilter

2安裝containerd

curl -# -O  https://mirrors.aliyun.com/docker-ce/linux/ubuntu/dists/jammy/pool/stable/amd64/containerd.io_1.6.26-1_amd64.deb

dpkg -i containerd.io_1.6.26-1_amd64.deb

#導出默認配置
containerd config default > /etc/containerd/config.toml

#修改containerd使用SystemdCgroup
SystemdCgroup = true

#配置containerd使用國內mirror站點上的pause鏡像及指定版本
sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.9"

#啓動containerd服務
systemctl enable containerd
systemctl restart containerd

3配置crictl客戶端

vim /etc/crictl.yaml
#輸入
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///run/containerd/containerd.sock
timeout: 10
debug: true

4安裝kubuadm、kubelet、kubectl

apt update && apt install -y apt-transport-https curl

curl -fsSL https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | apt-key add -

cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb https://mirrors.aliyun.com/kubernetes/apt/ kubernetes-xenial main
EOF

apt update
apt install -y kubelet kubeadm kubectl
systemctl enable kubelet

5初始化master節點

拉取下載鏡像

kubeadm config images pull --image-repository=registry.aliyuncs.com/google_containers --kubernetes-version="v1.28.2"

運行如下命令完成初始化

kubeadm init --kubernetes-version=v1.28.2 --pod-network-cidr=10.244.0.0/16 --service-cidr=10.96.0.0/12 --image-repository=registry.aliyuncs.com/google_containers --upload-certs

集羣初始化成功顯示：

設定kubectl

#複製認證爲Kubernetes系統管理員的配置文件至當前用戶root的家目錄
root@master:~# mkdir .kube
root@master:~# cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
root@master:~# ls .kube/
config

下圖所示表示成功

部署網絡插件

wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
kubectl apply -f kube-flannel.yml

加入節點

使用kubeadm join加入節點，節點要安裝配置的項目跟kubeadm init以前的操作完全一致

kubeadm join 192.168.215.129:6443 --token 97pgmv.vxjakgynflgdh4zw --discovery-token-ca-cert-hash sha256:52163ce2f39c0ccc44558e7339c52bfd006c78944088efb2f94dcc57d424b816

下圖所示，表示節點加入成功

部署應用

nginx-deployment.yml文件

apiVersion: apps/v1
kind: Deployment
metadata:
 name: nginx-deployment
 namespace: default
spec:
 replicas: 1
 selector:
   matchLabels:
     app: nginx
 template:
   metadata:
     labels:
       app: nginx
   spec:
     containers:
       - name: nginx
         image: nginx
         ports:
         - containerPort: 80

kubectl apply nginx-deployment.yml

nginx-service.yml文件

apiVersion: v1
kind: Service
metadata:
 name: nginx-service
 namespace: default
spec:
 selector:
   app: nginx
 #loadBalancerIP: 192.168.215.200
 ports:
   - protocol: TCP
     port: 80
     targetPort: 80
 type: NodePort #NodePort LoadBalancer

kubectl apply -f nginx-service.yml

測試

curl 192.168.215.129:31370 #IP是母機地址，此地址返回部署成功頁面

相關文件

相關配置文件下載

引用：

https://blog.csdn.net/m0_54408283/article/details/135159721