centos上部署kubernetes集群

环境

centos7系统机器2台：

• 172.16.5.17 用来做master节点
• 172.16.5.20 用来做minion节点

关闭防火墙和selinux

在master和minion节点上进行如下配置：

systemctl stop firewalldsystemctl disable firewalldsetenforce 0sed -i '/^SELINUX=/cSELINUX=disabled' /etc/sysconfig/selinux

master节点安装配置

安装etcd和kubernetes

yum -y install etcd kubernetes

配置etcd

#vim /etc/etcd/etcd.confETCD_NAME=defaultETCD_DATA_DIR="/var/lib/etcd/default.etcd"ETCD_LISTEN_CLIENT_URLS="http://0.0.0.0:2379"ETCD_ADVERTISE_CLIENT_URLS="http://localhost:2379"

配置kubernetes

vim /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,SecurityContextDeny,ResourceQuota"KUBE_API_ARGS=""

启动服务

systemctl restart etcd kube-apiserver kube-controller-manager kube-schedulersystemctl enable etcd kube-apiserver kube-controller-manager kube-schedulersystemctl status etcd kube-apiserver kube-controller-manager kube-scheduler

设置etcd网络

etcdctl --endpoint http://172.16.5.17:2379 set /atomic.io/network/config '{"Network":"172.17.0.0/16"}'

验证安装

kubectl get nodes

minion节点安装配置

安装flannel和kubernetes

yum -y install flannel kubernetes

配置kubernetes连接的服务端IP

vim /etc/kubernetes/configKUBE_MASTER="--master=http://172.16.5.17:8080"

配置kubernetes

vim /etc/kubernetes/kubeletKUBELET_ADDRESS="--address=127.0.0.1"KUBELET_PORT="--port=10250"KUBELET_HOSTNAME="--hostname-override=172.16.5.20"KUBELET_API_SERVER="--api-servers=http://172.16.5.17:8080"KUBELET_POD_INFRA_CONTAINER="--pod-infra-container-image=registry.access.redhat.com/rhel7/pod-infrastructure:latest"KUBELET_ARGS=""

配置flannel网络

vim /etc/sysconfig/flanneldFLANNEL_ETCD_ENDPOINTS="http://172.16.5.17:2379"FLANNEL_ETCD_PREFIX="/atomic.io/network"

其中atomic.io与上面etcd中的Network对应

启动服务

systemctl restart flanneld kube-proxy kubelet dockersystemctl enable flanneld kube-proxy kubelet dockersystemctl status flanneld kube-proxy kubelet docker

验证

在master节点上，执行命令kubectl get nodes，显示如下

NAME          STATUS    AGE172.16.5.20   Ready     17m