rke部署k8s集群
一、 基础环境
操作系统：CentOS7.6
内核版本：Linux 3.10.0-957.el7.x86_64
kubernetes：v1.13.5
docker版本：18.06.1-ce
二、 准备工作
你需要准备如下这些东西
1 rke安装包
https://github.com/rancher/rke/releases 这个链接，找你要的版本，本例为v0.2.1
2 cluster.yml文件
https://rancher.com/docs/rke/latest/en/example-yamls/ 这里有cluster.yml文件的样例
3 主机分配
| IP | 角色 | 备注 |
|---|---|---|
| 10.3.222.222 | rke部署机 | |
| 10.3.222.223 | master1 | |
| 10.3.222.224 | master2 | |
| 10.3.222.225 | node3 | |
| 10.3.222.226 | node1 | |
| 10.3.222.227 | node2 | |
| 10.3.222.224 | node3 |
4 关闭所有主机的selinux、firewalld
# setenforce 0
# sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
# systemctl stop firewalld && systemctl disable firewalld
三、 部署过程
1 安装docker
# yum install -y epel-release
# yum install -y yum-utils net-tools conntrack-tools wget
# yum-config-manager \
--add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# yum install -y docker-ce-18.06.1.ce
2 添加用户
# useradd -g docker docker
3 免密登录
将10.3.222.222主机root用户的公钥添加到k8s所有节点docker用户下的authorized_keys文件中。
# echo "your key" >> /home/docker/.ssh/authorized_keys
4 rke操作
在10.3.222.222(rke部署机)上
下载rke
# wget https://github.com/rancher/rke/releases/download/v0.2.1/rke_linux-amd64
# chmod 777 rke_linux-amd64
# mv rke_linux-amd64 rke
5 cluster.yml文件
nodes: - address: 10.3.222.223 user: docker role: - controlplane - etcd labels: ingress: 'true' - address: 10.3.222.224 user: docker role: - controlplane - etcd labels: ingress: 'true' - address: 10.3.222.225 user: docker role: - controlplane - etcd labels: ingress: 'true' - address: 10.3.222.226 user: docker role: - worker - address: 10.3.222.227 user: docker role: - worker - address: 10.3.222.228 user: docker role: - workeringress: provider: noneignore_docker_version: truecluster_name: k8s_testservices: kube-api: service_cluster_ip_range: 10.96.0.0/16 service_node_port_range: 30000-42767 pod_security_policy: false kubelet: cluster_domain: cluster.local cluster_dns_server: 10.96.0.10 fail_swap_on: false extra_args: max-pods: 250 cgroup-driver: cgroupfs kube-controller: cluster_cidr: 10.244.0.0/16 service_cluster_ip_range: 10.96.0.0/16authentication: strategy: x509authorization: mode: rbacnetwork: plugin: flanneladdons_include: - https://raw.githubusercontent.com/NVIDIA/k8s-device-plugin/v1.11/nvidia-device-plugin.yml本例中的cluster.yml文件提供一个样例，可以根据自己实际需要在文件中添加或删除一些参数。
6 安装集群
将cluster.yml和下载的rke放到同一个目录
# ./rke up
