kubectl 搭建

对应主机名 写入 hosts

centos-master = 192.168.121.9
centos-minion-1 = 192.168.121.65
centos-minion-2 = 192.168.121.66
centos-minion-3 = 192.168.121.67

关闭所有主机防火墙

setenforce 0
systemctl disable iptables-services firewalld
systemctl stop iptables-services firewalld

对应所有主机 建立 repo 源

[virt7-docker-common-release]
name=virt7-docker-common-release
baseurl=http://cbs.centos.org/repos/v...
gpgcheck=0

对应所有主机安装修改
yum -y install --enablerepo=virt7-docker-common-release kubernetes etcd flannel

vi /etc /kubernetes/config
KUBE_LOGTOSTDERR="--logtostderr=true"

KUBE_LOG_LEVEL="--v=0"

KUBE_ALLOW_PRIV="--allow-privileged=false"

KUBE_MASTER="--master=http://centos-master:8080"

对master主机
vi /etc/etcd/etcd.conf
ETCD_NAME=default
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379"
ETCD_ADVERTISE_CLIENT_URLS="http://0.0.0.0:2379"

vi /etc/kubernetes/apiserver

KUBE_API_ADDRESS="--address=0.0.0.0"

KUBE_API_PORT="--port=8080"

KUBELET_PORT="--kubelet-port=10250"

KUBE_ETCD_SERVERS="--etcd-servers=http://centos-master:2379"

KUBE_SERVICE_ADDRESSES="--service-cluster-ip-range=10.254.0.0/16"

KUBE_API_ARGS=""

启动ETCD并将其配置为在主机上保持网络覆盖配置： 警告此网络必须在您的网络基础架构中未使用！172.30.0.0/16在我们的网络中是免费的。
systemctl start etcd
etcdctl mkdir /kube-centos/network
etcdctl mk /kube-centos/network/config "{ "Network": "172.30.0.0/16", "SubnetLen": 24, "Backend": { "Type": "vxlan" } }"

vi /etc/sysconfig/flanneld
FLANNEL_ETCD_ENDPOINTS="http://centos-master:2379"

FLANNEL_ETCD_PREFIX="/kube-centos/network" 这个是上面创建的 kube-centos

最后
for SERVICES in etcd kube-apiserver kube-controller-manager kube-scheduler flanneld; do

systemctl restart $SERVICES
systemctl enable $SERVICES
systemctl status $SERVICES

done

Node
在节点上配置Kubernetes服务。
我们需要配置kubelet并启动kubelet和代理
vi /etc/kubernetes/kubelet
KUBELET_ADDRESS="--address=0.0.0.0"

KUBELET_PORT="--port=10250"

KUBELET_HOSTNAME="--hostname-override=centos-minion-n" 写各自的IP

KUBELET_API_SERVER="--api-servers=http://centos-master:8080" 写master的ip

KUBELET_ARGS=""

vi /etc/sysconfig/flanneld
FLANNEL_ETCD_ENDPOINTS="http://centos-master:2379"

FLANNEL_ETCD_PREFIX="/kube-centos/network"

Start the appropriate services on node 开启服务
for SERVICES in kube-proxy kubelet flanneld docker; do

systemctl restart $SERVICES
systemctl enable $SERVICES
systemctl status $SERVICES

done

Configure kubectl
kubectl config set-cluster default-cluster --server=http://centos-master:8080 写 master ip
kubectl config set-context default-context --cluster=default-cluster --user=default-admin
kubectl config use-context default-context

最后 在 master 主机
kubectl get nodes

得到相应的主机信息