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# 在master节点

$ hostnamectl set-hostname k8s-master #设置master节点的hostname

# 在slave-1节点

$ hostnamectl set-hostname k8s-slave1 #设置slave1节点的hostname

# 在slave-2节点

$ hostnamectl set-hostname k8s-slave2 #设置slave2节点的hostname

1  $ cat >>/etc/hosts<<EOF 2 192.168.80.14 k8s-master

3 192.168.80.15 k8s-slave1

4 192.168.80.16 k8s-slave2

5  EOF

1  iptables -P FORWARD ACCEPT

1. swapoff -a
2. # 防止开机自动挂载 swap 分区

3  sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

1. sed -ri 's#(SELINUX=).*#\1disabled#' /etc/selinux/config
2. setenforce 0
3. systemctl disable firewalld && systemctl stop firewalld

1. cat <<EOF > /etc/sysctl.d/k8s.conf
2. net.bridge.bridge-nf-call-ip6tables = 1
3. net.bridge.bridge-nf-call-iptables = 1
4. net.ipv4.ip_forward=1
5. vm.max_map_count=262144
6. EOF
7. modprobe br_netfilter
8. sysctl -p /etc/sysctl.d/k8s.conf

1. $ curl -o /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo
2. $ curl -o /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker- ce/linux/centos/docker-ce.repo
3. $ cat <<EOF > /etc/yum.repos.d/kubernetes.repo
4. [kubernetes]
5. name=Kubernetes
6. baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7- x86_64
7. enabled=1
8. gpgcheck=0
9. repo_gpgcheck=0
10. gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
11. http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
12. EOF
13. $ yum clean all && yum makecache

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## 查看所有的可用版本

$ yum list docker-ce --showduplicates | sort -r

##安装旧版本 yum install docker-ce-cli-18.09.9-3.el7 docker-ce-18.09.9-3.el7 ## 安装源里最新版本

$ yum install docker-ce -y

## 配置docker加速

$ mkdir -p /etc/docker

vi /etc/docker/daemon.json

{

"insecure-registries": [ "192.168.80.14:5000"

],

"registry-mirrors" : [ "https://8xpk5wnt.mirror.aliyuncs.com"

]

}

## 启动docker

$ systemctl enable docker && systemctl start docker

1. $ yum install -y kubelet-1.16.2 kubeadm-1.16.2 kubectl-1.16.2 -- disableexcludes=kubernetes
2. ## 查看kubeadm 版本
3. $ kubeadm version
4. ## 设置kubelet开机启动
5. $ systemctl enable kubelet

1  kubeadm init --config kubeadm.yaml

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...

Your Kubernetes master has initialized successfully!

To start using your cluster, you need to run the following as a regular

user:

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mkdir -p $HOME/.kube

sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config

You should now deploy a pod network to the cluster.

Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at: https://kubernetes.io/docs/concepts/cluster-administration/addons/

Then you can join any number of worker nodes by running the following on each as root:

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16 kubeadm join 192.168.80.14:6443 --token abcdef.0123456789abcdef \

17       --discovery-token-ca-cert-hash sha256:1c4305f032f4bf534f628c32f5039084f4b103c922ff71b12a5f0f98d1ca9a4f

1. [root@k8s-master k8s-install]# mkdir -p $HOME/.kube
2. [root@k8s-master k8s-install]# sudo cp -i /etc/kubernetes/admin.conf

$HOME/.kube/config

1. [root@k8s-master k8s-install]# sudo chown $(id -u):$(id -g)

$HOME/.kube/config

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1 [root@k8s-slave1 ~]# kubeadm join 192.168.80.14:6443 --token abcdef.0123456789abcdef \

2        --discovery-token-ca-cert-hash sha256:e75513fdd42c20c5b33ad84fd02fa68cf2691fa50c56ee45d740902e382d6ee1

1 [root@k8s-master k8s-install]# kubectl get nodes

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$ tar zxf registry.tar.gz -C /opt

$ ll /opt/registry-data total 25732

drwxr-xr-x 3 root root

4096 Apr 9 20:11 registry

-rw------- 1 root root 26344448 Apr 9 22:14 registry-v2.tar

1. ## 使用docker镜像启动镜像仓库服务
2. $ docker run -d -p 5000:5000 --restart always -v /opt/registry- data/registry:/var/lib/registry --name registry registry:2

1  $ docker images

1  $ docker pull nginx:alpine

1 [root@k8s-master k8s-install]# kubectl get pods –-all-namespaces -o wide

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$ kubectl get nodes

NAME

#观察集群节点是否全部Ready

Ready

Ready

STATUS

master

<none>

ROLES

22h 22h

AGE v1.13.3

v1.13.3

VERSION

k8s-master

k8s-slave

1  $ kubectl run test-nginx --image=nginx:alpine

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$ curl 10.244.1.2

...

<h1>Welcome to nginx!</h1>

<p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p>

<p>For online documentation and support please refer to

<a href="nginx news">nginx.org</a>.<br/> Commercial support is available at

<a href="NGINX.com Has Moved">nginx.com</a>.</p>

<p><em>Thank you for using nginx.</em></p>

</body>

</html>

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kubectl create deployment nginx --image=nginx

kubectl expose deployment nginx --port=80 --type=NodePort

kubectl get pod,svc