2、kubernetes的Kubeadm 部署安装
在k8s-master01、k8s-node01、k8s-node02上执行：
kube-proxy开启ipvs的前置条件
modprobe br_netfilter
cat > /etc/sysconfig/modules/ipvs.modules <chmod 755 /etc/sysconfig/modules/ipvs.modules &&
bash /etc/sysconfig/modules/ipvs.modules &&
lsmod | grep -e ip_vs -e nf_conntrack_ipv4
安装 Docker 软件
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum update -y && yum install -y docker-ce
## 创建 /etc/docker 目录
mkdir /etc/docker
# 配置 daemon.
cat > /etc/docker/daemon.json <
mkdir -p /etc/systemd/system/docker.service.d
# 重启docker服务
systemctl daemon-reload && systemctl restart docker && systemctl enable dockergrub2-set-default 'CentOS Linux (4.4.214-1.el7.elrepo.x86_64) 7 (Core)' && reboot
安装 Kubeadm （主从配置）
cat < /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
yum -y install kubeadm-1.17.3 kubectl-1.17.3 kubelet-1.17.3
systemctl enable kubelet.service改写/etc/hosts文件
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.60.100 k8s-master01
192.168.60.101 k8s-node01
192.168.60.102 k8s-node02
192.168.60.103 hub.ljxwtl.com初始化主节点
先安装kubeadm-basic.images.tar
链接：https://pan.baidu.com/s/148Cu9VV9oCwEh_wRJ0H3mw
提取码：q4pe
tar -xvf kubeadm-basic.images.tar.gzvi load-image.sh
#!/bin/bash
ls /mine/kubeadm-basic.images > /mine/images-list.txt
cd /mine/kubeadm-basic.images
for i in $(cat /mine/images-list.txt)
do
docker load -i $i
done
rm -rf /mine/images-list.txt
sh load-image.sh
docker image ls 
第二种方法：
docker image pull coredns/coredns
docker image pull mirrorgooglecontainers/kube-apiserver-amd64:v1.14.8
docker image pull mirrorgooglecontainers/pause-amd64:3.1
docker image pull mirrorgooglecontainers/etcd-amd64:3.3.17-0
docker image pull mirrorgooglecontainers/kube-controller-manager-amd64:v1.13.12
docker image pull mirrorgooglecontainers/kube-scheduler-amd64:v1.13.12
docker image pull mirrorgooglecontainers/kube-proxy-amd64:v1.13.12
docker image pull jasonbrooks/flannel以下只在master节点上运行：
初始化配置到文件中：
kubeadm config print init-defaults > kubeadm-config.yaml
localAPIEndpoint:
advertiseAddress: 192.168.66.10
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: k8s-master01
taints:
- effect: NoSchedule
key: node-role.kubernetes.io/master
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.17.3
networking:
dnsDomain: cluster.local
podSubnet: "10.244.0.0/16"
serviceSubnet: 10.96.0.0/12
scheduler: {}
---
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
featureGates:
SupportIPVSProxyMode: true
mode: ipvs
内核数应大于等于2
kubeadm init --config=kubeadm-config.yaml | tee kubeadm-init.log
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
chown $(id -u):$(id -g) $HOME/.kube/config
加入主节点以及其余工作节点
执行安装日志中的加入命令即可部署网络
在k8s-master01、k8s-node01、k8s-node02上执行：
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml