Kubespray 是 Kubernetes incubator 中的项目，目标是提供 Production Ready Kubernetes 部署方案，该项目基础是通过 Ansible Playbook 来定义系统与 Kubernetes 集群部署的任务，具有以下几个特点：
GitHub地址：https://github.com/kubernetes-sigs/kubespray
1）所以的主机都需要关闭selinux，执行的命令如下：
setenforce 0 sed -i --follow-symlinks ‘s/SELINUX=enforcing/SELINUX=disabled/g‘ /etc/sysconfig/selinux
2）防火墙（可选）和网络设置，所有的主机都执行以下命令：
systemctl stop firewalld & systemctl disable firewalld modprobe br_netfilter echo ‘1‘ > /proc/sys/net/bridge/bridge-nf-call-iptables sysctl -w net.ipv4.ip_forward=1
3）#设置内核参数
sudo vim /etc/security/limits.conf * soft nofile 32768 * hard nofile 65535 * soft nproc 32768 * hadr nproc 65535
4）设置k8s内核参数
sudo vim /etc/sysctl.d/k8s.conf net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 net.ipv4.ip_nonlocal_bind = 1 net.ipv4.ip_forward = 1 vm.swappiness=0
5）重新加载生效
sudo sysctl --system sudo sysctl -p
6) 安装 python 及 epel (在Ansible主机上安装并配置好与各node的免秘钥登录)
yum install -y epel-release python36 python36-pip git
1）#克隆项目
wget https://github.com/kubernetes-sigs/kubespray/archive/v2.12.4.tar.gz
2）# Install dependencies from ``requirements.txt``
sudo /usr/bin/pip3.6 install -r requirements.txt
3）# Copy ``inventory/sample`` as ``inventory/mycluster``
cp -rfp inventory/sample inventory/mycluster
4）# Update Ansible inventory file with inventory builder
declare -a IPS=(10.10.1.3 10.10.1.4 10.10.1.5)
CONFIG_FILE=inventory/mycluster/hosts.yaml /usr/bin/python3.6 contrib/inventory_builder/inventory.py ${IPS[@]}
5）# Review and change parameters under ``inventory/mycluster/group_vars``
cat inventory/mycluster/group_vars/all/all.yml cat inventory/mycluster/group_vars/k8s-cluster/k8s-cluster.yml
6）# Deploy Kubespray with Ansible Playbook - run the playbook as root
# The option `--become` is required, as for example writing SSL keys in /etc/,
# installing packages and interacting with various systemd daemons.
# Without --become the playbook will fail to run!
ansible-playbook -i inventory/mycluster/hosts.yaml --become --become-user=root cluster.yml
注意：
1、默认从国外下载镜像因为node需要能上外网。
2、安装需要点时间耐心等待，遇到报错解决后继续安装。
原文：https://www.cnblogs.com/Dev0ps/p/12632508.html