kubernetes集群搭建

安装机器环境准备
master节点安装
node节点安装
测试

1，安装环境准备

我的集群安装准备了4台虚拟机

192.168.122.11 master节点
192.168.122.12 node1节点
192.168.122.13 node2节点
192.168.122.14 node3节点
四台机器都安装了centos7系统，安装过程中选择了最小安装，点选了右侧的基础开发组件
配置网络
修改hosts文件
可以通过ping命令测试网络是否设置成功
-网络配置成功之后，修改centos系统的yum源，163的源

yum install -y wget
rm -f /etc/yum.repos.d/CentOS-Base.repo
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
yum clean all
yum makecache

关闭防火墙

systemctl stop firewalld
systemctl disable firewalld
systemctl status firewalld

关闭selinux

修改/etc/selinux/config 文件将SELINUX=enforcing改为SELINUX=disabled

reboot重启机器

扫描二维码关注公众号，回复： 2733146 查看本文章

至此所有机器完成基础环境准备。

2，master节点安装

```
yum -y install etcd docker kubernetes
```

etcd配置

/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://localhost:2379"

/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://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=""

/etc/kubernetes/config

KUBE_LOGTOSTDERR="--logtostderr=true"

# journal message level, 0 is debug
KUBE_LOG_LEVEL="--v=0"

# Should this cluster be allowed to run privileged docker containers
KUBE_ALLOW_PRIV="--allow-privileged=false"

# How the controller-manager, scheduler, and proxy find the apiserver
KUBE_MASTER="--master=http://master:8080"

执行脚本依次启动服务

for SERVICES  in etcd docker kube-apiserver kube-controller-manager kube-scheduler;  do
    systemctl restart $SERVICES
    systemctl enable $SERVICES
    systemctl status $SERVICES -l
done

etcd网络配置

etcdctl mk /atomic.io/network/config '{"Network":"172.17.0.0/16"}'

测试

kubectl get nodes

3，node节点安装

yum -y install flannel docker kubernetes

/etc/sysconfig/flanneld

# Flanneld configuration options
FLANNEL_ETCD="http://192.168.122.11:2379"
# etcd url location.  Point this to the server where etcd runs
FLANNEL_ETCD_ENDPOINTS="http://192.168.122.11:2379"

# etcd config key.  This is the configuration key that flannel queries
# For address range assignment
FLANNEL_ETCD_PREFIX="/atomic.io/network"

# Any additional options that you want to pass
#FLANNEL_OPTIONS=""

/etc/kubernetes/config

KUBE_LOGTOSTDERR="--logtostderr=true"

# journal message level, 0 is debug
KUBE_LOG_LEVEL="--v=0"

# Should this cluster be allowed to run privileged docker containers
KUBE_ALLOW_PRIV="--allow-privileged=false"

# How the controller-manager, scheduler, and proxy find the apiserver
KUBE_MASTER="--master=http://192.168.122.11:8080"

/etc/kubernetes/kubelet

# The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)
KUBELET_ADDRESS="--address=0.0.0.0"

# The port for the info server to serve on
KUBELET_PORT="--port=10250"

# You may leave this blank to use the actual hostname
KUBELET_HOSTNAME="--hostname-override=192.168.122.12"

# location of the api-server
KUBELET_API_SERVER="--api-servers=http://192.168.122.11:8080"

# pod infrastructure container
#KUBELET_POD_INFRA_CONTAINER=""


KUBELET_ARGS="--cluster-dns=192.168.122.11 --cluster-domain=atomic.io/network"

node节点服务脚本启动

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

4，测试

[root@master ~]# kubectl get nodes
NAME             STATUS     AGE
192.168.122.12   NotReady   56m
192.168.122.13   NotReady   14m
192.168.122.14   NotReady   14m

1，安装环境准备

2，master节点安装

3，node节点安装

4，测试

猜你喜欢