k8s-kubeadm

hostnamectl set-hostname k8s-master

swapoff -a

编辑配置文件 /etc/fstab 将swap进行注释

使用free -g命令，Swap 显示都为0表示修改成功了

root@k8s-master:~# apt install -y docker.io
root@k8s-master:~# docker version
Client:
 Version:           20.10.21
 API version:       1.41
 Go version:        go1.18.1
 Git commit:        20.10.21-0ubuntu1~18.04.3
 Built:             Thu Apr 27 05:50:21 2023
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server:
 Engine:
  Version:          20.10.21
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.18.1
  Git commit:       20.10.21-0ubuntu1~18.04.3
  Built:            Thu Apr 27 05:36:22 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.12-0ubuntu1~18.04.1
  GitCommit:        
 runc:
  Version:          1.1.4-0ubuntu1~18.04.2
  GitCommit:        
 docker-init:
  Version:          0.19.0
  GitCommit:   

root@k8s-master:~# cat > /etc/docker/daemon.json << EOF
{
    "registry-mirrors":[
        "https://docker.mirrors.ustc.edu.cn",
        "https://hub-mirror.c.163.com"
    ],
    "exec-opts":[
        "native.cgroupdriver=systemd"
    ]
}
EOF

systemctl daemon-reload
systemctl restart docker

//读取k8s目录下的文件进行安装
sudo sh install_ubuntu.sh
//从远程重新下载进行安装
sudo sh install install_ubuntu_online.sh

//指定配置项启动
root@k8s-master:~# kubeadm init --apiserver-advertise-address=0.0.0.0 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version 1.23.0 --service-cidr=10.1.0.0/16 --pod-network-cidr=10.244.0.0/16 --ignore-preflight-errors=all

// 获取内网重新生成kubeadm-init.yaml
root@k8s-master:~# cat k8s/kubeadm-init.yaml | sed "s/advertiseAddress:.*/advertiseAddress: $(ip addr show eth0 |grep "inet "|awk '{print $2}' | cut -d/ -f1)/" > kubeadm-init.yaml

//加载配置文件进行启动
root@k8s-master:~# kubeadm init --config  kubeadm-init.yaml  

配置信息

生成默认的配置信息 kube-init.yaml

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

然后进行按照需求进行修改成以下的内容

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: 192.168.1.20
  bindPort: 6443
nodeRegistration:
  criSocket: /var/run/dockershim.sock
  imagePullPolicy: IfNotPresent
  name: k8s-master
  taints: null
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: {}
etcd:
  local:
    dataDir: /var/lib/etcd
    #etcd访问地址
    extraArgs:
     listen-client-urls: "https://127.0.0.1:2379,https://127.0.0.1:2379"
     listen-peer-urls: "https://127.0.0.1:2380"
imageRepository: registry.aliyuncs.com/google_containers
kind: ClusterConfiguration
kubernetesVersion: 1.23.0
networking:
  dnsDomain: cluster.local
  serviceSubnet: 10.96.0.0/12
  podSubnet: 10.244.0.0/16
scheduler: {}
---
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
clusterCIDR: "10.244.0.0/16"
# 启用 ipvs 模式
mode: "ipvs"

//获取外网地址重新生成kubeadm-init.yaml root@k8s-master:~# cat k8s/kubeadm-init.yaml | sed "s/advertiseAddress:.*/advertiseAddress: $(curl -s ifconfig.me)/" > kubeadm-init.yaml

//TODO

root@k8s-master:~# mkdir -p $HOME/.kube
root@k8s-master:~# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
root@k8s-master:~# sudo chown $(id -u):$(id -g) $HOME/.kube/config
root@k8s-master:~# export KUBECONFIG=/etc/kubernetes/admin.conf

//安装本地
root@k8s-master:~# kubectl apply -f k8s/kube-flannel.yml
//安装远程
root@k8s-master:~# kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml

root@k8s-master:~# kubectl get node 
NAME         STATUS   ROLES                  AGE   VERSION
k8s-master   Ready    control-plane,master   13m   v1.23.9

root@k8s-master:~# kubectl get pod -A
NAMESPACE     NAME                                 READY   STATUS    RESTARTS   AGE
kube-system   coredns-6d8c4cb4d-d85pk              1/1     Running   0          36m
kube-system   coredns-6d8c4cb4d-ddp9k              1/1     Running   0          36m
kube-system   etcd-k8s-master                      1/1     Running   9          36m
kube-system   kube-apiserver-k8s-master            1/1     Running   8          36m
kube-system   kube-controller-manager-k8s-master   1/1     Running   10         36m
kube-system   kube-proxy-h4xnv                     1/1     Running   0          36m
kube-system   kube-scheduler-k8s-master            1/1     Running   11         36m