centos+k8s+docker部署

一、环境

centos7,

主机:

master:  主机名k8s-master，  ip: 192.168.1.130

node1: 主机名k8s-node-1, ip:192.168.1.132

master和node的/etc/hosts都是如下配置

cat /etc/hosts

192.168.1.130    k8s-master

192.168.1.130   etcd

192.168.1.130   registry

192.168.1.132   k8s-node-1

192.168.1.133    k8s-node-2

master执行

# systemctl stop firewalld
# systemctl disable firewalld
# setenforce 0

1.使用yum安装etcd和kubernetes-master

# yum -y install etcd kubernetes-master

2..编辑/etc/etcd/etcd.conf文件

ETCD_NAME=default
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_CLIENT_URLS="
ETCD_ADVERTISE_CLIENT_URLS="

3.编辑/etc/kubernetes/apiserver文件 
KUBE_API_ADDRESS="--insecure-bind-address=0.0.0.0"
KUBE_API_PORT="--port=8080"
KUBELET_PORT="--kubelet-port=10250"
KUBE_ETCD_SERVERS="--etcd-servers=
 KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"
 KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ResourceQuota"KUBE_API_ARGS=""
 
 4.启动etcd、kube-apiserver、kube-controller-manager、kube-scheduler等服务，并设置开机启动
 # for SERVICES in etcd kube-apiserver kube-controller-manager kube-scheduler; do systemctl restart $SERVICES;systemctl enable $SERVICES;systemctl status $SERVICES ; done
 
 
 5.在etcd中定义flannel网络
 # etcdctl mk /atomic.io/network/config '{"Network":"172.17.0.0/16"}'
 
 
 
 安装配置Kubernetes Node
 
 1.使用yum安装flannel和kubernetes-node
 
 # yum -y install flannel kubernetes-node
 
 2.为flannel网络指定etcd服务，修改/etc/sysconfig/flanneld文件
 
 FLANNEL_ETCD="
 
 3.修改/etc/kubernetes/config文件

KUBE_LOGTOSTDERR="--logtostderr=true"
KUBE_LOG_LEVEL="--v=0"
KUBE_ALLOW_PRIV="--allow-privileged=false"
KUBE_MASTER="--master=

4.按照如下内容修改对应node的配置文件/etc/kubernetes/kubelet 
KUBELET_ADDRESS="--address=0.0.0.0"
KUBELET_PORT="--port=10250"
KUBELET_HOSTNAME="--hostname-override=192.168.1.132" #修改成对应Node的IP
KUBELET_API_SERVER="--api-servers=http://192.168.30.20:8080" #指定Master节点的API ServerKUBELET_POD_INFRA_CONTAINER="--pod-infra-container-p_w_picpath=registry.access.redhat.com/rhel7/pod-infrastructure:latest"
KUBELET_ARGS=""

5.在所有Node节点上启动kube-proxy,kubelet,docker,flanneld等服务，并设置开机启动。

# for SERVICES in kube-proxy kubelet docker flanneld;do systemctl restart $SERVICES;systemctl enable $SERVICES;systemctl status $SERVICES; done

验证集群是否安装成功
在master上执行如下命令

# kubectl get node