yum -y install  etcd docker  flannel kubenetes

一般会遇到没有k8s源的问题，先 yum update -y 看是否有效，如果还是没用就创建yum 源，再安装 kubenetes

如下操作：

创建yum源

vi ?virt7-docker-common-release.repo

加入以下内容：

[virt7-docker-common-release]name=virt7-docker-common-releasebaseurl=http://cbs.centos.org/repos/virt7-docker-common-release/x86_64/os/gpgcheck=0

安装服务

执行以下命令，安装kubernetes

yum -y install --enablerepo=virt7-docker-common-release kubernetes 

接下来开始部署：

禁用防火墙

systemctl disable iptables-services firewalldsystemctl stop iptables-services firewalld

启动 etcd docker  flannel 服务：
1、先启动etcd:
systemctl enable etcd.service
systemctl start etcd.service

2 配置Flannel

　　master、node上均编辑/etc/sysconfig/flanneld，修改红色部分

# Flanneld configuration options# etcd url location. ?Point this to the server where etcd runsFLANNEL_ETCD_ENDPOINTS="http://etcd:2379"# etcd config key. ?This is the configuration key that flannel queries# For address range assignmentFLANNEL_ETCD_PREFIX="/atomic.io/network"# Any additional options that you want to pass#FLANNEL_OPTIONS=""

3 配置etcd中关于flannel的key

　　Flannel使用Etcd进行配置，来保证多个Flannel实例之间的配置一致性，所以需要在etcd上进行如下配置：（‘/atomic.io/network/config’这个key与上文/etc/sysconfig/flannel中的配置项FLANNEL_ETCD_PREFIX是相对应的，错误的话启动就会出错）

[root@k8s-master ~]# etcdctl mk /atomic.io/network/config ‘{ "Network": "10.0.0.0/16" }‘{ "Network": "10.0.0.0/16" }

4 启动

　　启动Flannel之后，需要依次重启docker

　　在master执行：

systemctl enable flanneld.service systemctl start flanneld.service service docker restart

　　在node上执行：

systemctl enable flanneld.service systemctl start flanneld.service service docker restart

在master节点配置kubernetes服务

1.修改文件/etc/kubernetes/config(所有节点)

注意，master和slave主机都要修改 
指定master主机的ip，文件内容如下：

$ cat /etc/kubernetes/configKUBE_LOGTOSTDERR="--logtostderr=true"KUBE_LOG_LEVEL="--v=0"KUBE_ALLOW_PRIV="--allow-privileged=false"KUBE_MASTER="--master=http://master:8080"

1.修改配置文件/etc/etcd/etcd.conf,确保etcd监听所有地址。内容如下：

$ cat /etc/etcd/etcd.confETCD_NAME=defaultETCD_DATA_DIR="/var/lib/etcd/default.etcd"ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379"

2.修改配置文件/etc/kubernetes/apiserver

cat /etc/kubernetes/apiserverKUBE_API_ADDRESS="--address=0.0.0.0"KUBE_API_PORT="--port=8080"KUBELET_PORT="--kubelet-port=10250"KUBE_ETCD_SERVERS="--etcd-servers=http://127.0.0.1:2379"KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,ResourceQuota"KUBE_API_ARGS=""

3.修改配置文件/etc/kubernetes/controller-manager，定义slave主机ip地址

KUBELET_ADDRESSES="--machines=master地址"

在master主机上，启动服务

执行如下命令，批量启动服务

for SERVICES in etcd kube-apiserver kube-controller-manager kube-scheduler; do ???systemctl restart $SERVICES ???systemctl enable $SERVICES ???systemctl status $SERVICESdone

slave节点配置

注意：slave节点主机，同样要安装docker，flannel ,k8s

yum 安装kubernetes

yum -y install flannel docker

yum -y install --enablerepo=virt7-docker-common-release kubernetes

1.修改kubernetes配置文件，指定master。

$ cat /etc/kubernetes/configKUBE_MASTER="--master=http://master:8080"

2.配置kubelet服务。

$ cat /etc/kubernetes/kubeletKUBELET_ADDRESS="--address=0.0.0.0"KUBELET_PORT="--port=10250"KUBELET_HOSTNAME="--hostname-override=node自身"KUBELET_API_SERVER="--api-servers=http://master:8080"

在slave主机上，启动服务

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

验证

现在登陆master，确认slave的状态

$ kubectl get nodesNAME ??????????LABELS ???????????????????????????????STATUS ???AGE10.16.93.182 ??kubernetes.io/hostname=node1 ??Ready ????1h

这样就配置完成了

在CentOS7上部署 Kubernetes集群

原文地址：http://www.cnblogs.com/DaBing0806/p/7793847.html