说在前面，部署环境：阿里云三台虚机，OS：CentOS7.7，操作系统6.10不行，刚开始就有bridge module无法加载，开始操作吧：
1、每台机器环境准备:https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/
yum update modprobe br_netfilter cat <<EOF > /etc/sysctl.d/k8s.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 EOF sysctl --system
2、install docker :https://kubernetes.io/docs/setup/production-environment/container-runtimes/#docker
# Install Docker CE ## Set up the repository ### Install required packages. yum install -y yum-utils device-mapper-persistent-data lvm2 ### Add Docker repository. yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo ## Install Docker CE. yum update -y && yum install -y containerd.io-1.2.10 docker-ce-19.03.4 docker-ce-cli-19.03.4 ## Create /etc/docker directory. mkdir /etc/docker # Setup daemon. cat > /etc/docker/daemon.json <<EOF { "exec-opts": ["native.cgroupdriver=systemd"], "log-driver": "json-file", "log-opts": { "max-size": "100m" }, "storage-driver": "overlay2", "storage-opts": [ "overlay2.override_kernel_check=true" ] } EOF mkdir -p /etc/systemd/system/docker.service.d # Restart Docker systemctl daemon-reload systemctl restart docker
3.安装kubeadm等组件
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
# Set SELinux in permissive mode (effectively disabling it)
setenforce 0
sed -i ‘s/^SELINUX=enforcing$/SELINUX=permissive/‘ /etc/selinux/config
yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
systemctl enable --now kubelet
原文：https://www.cnblogs.com/dhcn/p/12551477.html