kubeadm安装k8s，

kubeadm安装k8s，

软件版本：

kubelet：V1.13.3

docker： 18.06.1

实验环境：

Centos 7.5.1804

说明：

初学。安装步骤参考了阿良的文档，并做了部分修改。

 

步骤如下：

1、关闭防火墙: $ systemctl stop firewalld $ systemctl disable firewalld   2、关闭selinux: $ sed -i 's/enforcing/disabled/' /etc/selinux/config  $ setenforce 0   3、关闭swap: $ swapoff -a $ 临时 $ vim /etc/fstab $ 永久 sed -ri 's/.*swap.*/#&/' /etc/fstab   4、添加主机名与IP对应关系(记得设置主机名):  $ cat /etc/hosts 192.168.0.11 k8s-master  192.168.0.12 k8s-node1 192.168.0.13 k8s-node2   5、将桥接的IPV4流量传递到iptables的链 $ cat > /etc/sysctl.d/k8s.conf << EOF net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 EOF $ sysctl --system   6、安装docker $ wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo $ yum -y install docker-ce-18.06.1.ce-3.el7 $ systemctl enable docker && systemctl start docker $ docker --version Docker version 18.06.1-ce, build e68fc7a   7、添加阿里云源 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=1 repo_gpgcheck=1 gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg EOF   8、安装kubeadm,kubelet,kubectl(所有节点安装docker,kubeadm,kubelet) yum install -y kubelet-1.13.3 kubeadm-1.13.3 kubectl-1.13.3 kubernetes-cni-0.6.0 systemctl enable kubelet   9、部署k8s master kubeadm init \   --apiserver-advertise-address=192.168.0.11 \   --image-repository registry.aliyuncs.com/google_containers \   --kubernetes-version v1.13.3 \   --service-cidr=10.1.0.0/16\   --pod-network-cidr=10.244.0.0/16   10、使用kubectl工具 mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config kubectl get nodes   11、安装pod网络插件（CNI） wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml sed -i 's/quay.io\/coreos/registry.cn-beijing.aliyuncs.com\/imcto/g' kube-flannel.yml kubectl apply -f kube-flannel.yml   12、加入kubernetes node 向集群添加新节点，执行在kubeadm init输出的kubeadm join命令： $  kubeadm join 192.168.0.11:6443 --token l79g5t.6ov4jkddwqki1dxe --discovery-token- ca-cert-hash sha256:4f07f9068c543130461c9db368d62b4aabc22105451057f887defa35f47fa076   13、部署dashboard wget https://raw.githubusercontent.com/kubernetes/dashboard/v1.10.1/src/deploy/recommended/kubernetes-dashboard.yaml 修改镜像地址为 reg.qiniu.com/k8s/kubernetes-dashboard-amd64:v1.8.3 默认Dashboard只能集群内部访问，修改Service为NodePort类型，暴露到外部: kind: Service apiVersion: v1 metadata:   labels:     k8s-app: kubernetes-dashboard   name: kubernetes-dashboard   namespace: kube-system spec:   type: NodePort   ports:     - port: 443       targetPort: 8443       nodePort: 30001   selector:     k8s-app: kubernetes-dashboard $ kubectl apply -f kubernetes-dashboard.yaml 访问地址:https://NodeIP:30001   14、创建service account并绑定默认cluster-admin管理员集群角色: kubectl create serviceaccount dashboard-admin -n kube-system kubectl create clusterrolebinding dashboard-admin --clusterrole=cluster-admin --serviceaccount=kube-system:dashboard-admin kubectl describe secrets -n kube-system $(kubectl -n kube-system get secret | awk '/dashboard-admin/{print $1}')   15、使用输出的token登录Dashboard。   16、使用kubeconfig登录Dashboard # 获取dashboard-admin的name kubectl describe secret -n kube-system dashboard-admin # 把dashboard的token放入变量，方便后面调用（这里的token是base64编码，此处需要进行解码操作） DASH_TOCKEN=$(kubectl get secret -n kube-system dashboard-admin-token-sj7kl -o jsonpath={.data.token}|base64 -d) # 配置上下文和当前上下文 kubectl config set-cluster kubernetes --server=192.168.0.11:6443 --kubeconfig=/root/dashbord-admin.conf kubectl config set-credentials dashboard-admin --token=$DASH_TOCKEN --kubeconfig=/root/dashbord-admin.conf kubectl config set-context dashboard-admin@kubernetes --cluster=kubernetes --user=dashboard-admin --kubeconfig=/root/dashbord-admin.conf kubectl config use-context dashboard-admin@kubernetes --kubeconfig=/root/dashbord-admin.conf   17、使用dashbord-admin.conf登录kube_dashboard