在AWS云上搭建K8S集群

  1. 新建EC2
    t2.medium
    操作系統(tǒng)是 CentOS 7.5.1804 (x86_64) - with AWS_CLI_SSM and HVM - ami-0229f1a332c972082
    安全組全開,能上網(wǎng)

    從策劃到設(shè)計(jì)制作,每一步都追求做到細(xì)膩,制作可持續(xù)發(fā)展的企業(yè)網(wǎng)站。為客戶提供成都網(wǎng)站設(shè)計(jì)、網(wǎng)站制作、網(wǎng)站策劃、網(wǎng)頁(yè)設(shè)計(jì)、申請(qǐng)域名、虛擬空間、網(wǎng)絡(luò)營(yíng)銷、VI設(shè)計(jì)、 網(wǎng)站改版、漏洞修補(bǔ)等服務(wù)。為客戶提供更好的一站式互聯(lián)網(wǎng)解決方案,以客戶的口碑塑造優(yōu)易品牌,攜手廣大客戶,共同發(fā)展進(jìn)步。

  2. 系統(tǒng)初始化
    yum install -y vim
    yum install -y git
    yum install -y wget
    setenforce 0
    sed -i 's/enforcing/disabled/' /etc/selinux/config

  3. 安裝docker
    yum install -y docker
    systemctl enable docker.service
    systemctl start docker.service

  4. 配置yum源
    cat > /etc/yum.repos.d/kubernetes.repo << EOF
    [kubernetes]
    name=Kubernetes
    baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
    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

  5. 安裝kubeadm、kubelet、kubectl
    yum install -y kubelet-1.13.3
    yum install -y kubeadm-1.13.3
    yum install -y kubectl-1.13.3
    systemctl enable kubelet.service
    systemctl start kubelet.service

  6. 初始化master(此步驟只需要在master上執(zhí)行)
    kubeadm init \
    --apiserver-advertise-address=10.44.41.236 \
    --image-repository registry.aliyuncs.com/google_containers \
    --kubernetes-version v1.13.3 \
    --service-cidr=10.96.0.0/16 \
    --pod-network-cidr=10.244.0.0/16

說(shuō)明:
--apiserver-advertise-address=10.44.41.236 是master的ip地址,
--service-cidr=10.96.0.0/16 是service的地址段,可自定義
--pod-network-cidr=10.244.0.0/16 是pod的地址段,可自定義**

初始化完成之后,會(huì)有如下提示,按照提示操作即可
Your Kubernetes master has initialized successfully!

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

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/

You can now join any number of machines by running the following on each node
as root:

kubeadm join 10.44.41.236:6443 --token 7dtiw9.7ytxxxxxx89x7tr --discovery-token-ca-cert-hash sha256:c2a0b41860xxxxxxff8dcb5d3b3a460

task 2 創(chuàng)建pod網(wǎng)絡(luò),先下載yml文件,再下載docker鏡像,然后把docker鏡像tag成與yml文件中一致,最后apply
wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
sudo docker pull akinlau/flannel-v0.11.0:v0.11.0
sudo docker images
sudo docker tag ff281650a721 quay.io/coreos/flannel:v0.11.0-amd64
kubectl apply -f kube-flannel.yml

task 3 執(zhí)行完命令之后在master上查看節(jié)點(diǎn)狀態(tài),node節(jié)點(diǎn)需要很久才能達(dá)到ready狀態(tài),因?yàn)橄螺dflannel鏡像很慢,可以將master上的鏡像docker save保存,然后拷貝到node上執(zhí)行docker load導(dǎo)入
[centos@ip-10-44-41-236 ~]$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
ip-10-44-41-236.cn-north-1.compute.internal Ready master 90m v1.13.3
ip-10-44-41-244.cn-north-1.compute.internal Ready <none> 27m v1.13.3
ip-10-44-41-43.cn-north-1.compute.internal Ready <none> 27m v1.13.3

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