yum方式安装kubernetes

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环境准备 master01 node01 node02，连通网络，修改 hosts 文件，确认 3 台主机相互解析

vim /etc/hosts

127.0.0.1  localhost localhost.localdomain localhost4 localhost4.localdomain4
::1        localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.201 master01
192.168.1.202 node01
192.168.1.203 node02

主机配置阿里 YUM 源

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup && curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

开始部署 kubernetes

1. 在 master01 安装 etcd

yum install etcd -y

安装完成，修改 etcd 配置文件 /etc/etcd/etcd.conf

vim /etc/etcd/etcd.conf

ETCD_LISTEN_CLIENT_URLS=”http://0.0.0.0:2379″    #修改监听地址
ETCD_LISTEN_CLIENT_URLS=”http://192.168.1.201:2379″    #修改 etcd 地址为本机地址

设置服务启动

systemctl start etcd && systemctl enable etcd

2. 在所有主机安装 kubernetes

yum install kubernetes -y

3. 配置 master

vim /etc/kubernetes/config

KUBE_MASTER=”–master=http://192.168.1.201:8080″    #修改 kube_master 地址

vim /etc/kubernetes/apiserver

KUBE_API_ADDRESS=”–insecure-bind-address=0.0.0.0″    #修改监听地址
KUBE_ETCD_SERVERS=”–etcd-servers=http://192.168.1.201:2379″    #修改 etcd 地址
KUBE_ADMISSION_CONTROL=”–admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ResourceQuota”    #删除认证参数 ServiceAccount

设置服务启动，启动顺序 apiserver>scheduler=controller-manager

systemctl start docker && systemctl enable docker
systemctl start kube-apiserver && systemctl enable kube-apiserver
systemctl start kube-scheduler && systemctl enable kube-scheduler
systemctl start kube-controller-manager && systemctl enable kube-controller-manager

4. 配置 node

vim /etc/kubernetes/config

KUBE_MASTER=”–master=http://192.168.1.201:8080″    #修改 master 地址

vim /etc/kubernetes/kubelet

KUBELET_ADDRESS=”–address=192.168.1.202″    #修改 kubelet 地址
KUBELET_HOSTNAME=”–hostname-override=192.168.1.202″    #修改 kubelet 主机名
KUBELET_API_SERVER=”–api-servers=http://192.168.1.201:8080″    #修改 apiserver 地址

设置服务启动

systemctl start docker && systemctl enable docker
systemctl start kubelet && systemctl enable kubelet
systemctl start kube-proxy && systemctl enable kube-proxy

5. 部署完成，查看集群状态

kubectl get nodes

[root@node02 kubernetes]# kubectl -s http://192.168.1.201:8080 get nodes -o wide
NAME            STATUS    AGE      EXTERNAL-IP
192.168.1.202  Ready    29s      <none>
192.168.1.203  Ready    16m      <none>

 6. 在所有主机安装 flannel

yum install flannel -y

vim /etc/sysconfig/flanneld

FLANNEL_ETCD_ENDPOINTS=”http://192.168.1.201:2379″    #修改 etcd 地址

etcdctl mk /atomic.io/network/config ‘{“Network”: “172.16.0.0/16”}’    #在 etcd 主机设置容器网络

master 主机重启服务

systemctl start flanneld && systemctl enable flanneld
systemctl restart docker
systemctl restart kube-apiserver
systemctl restart kube-scheduler
systemctl restart kube-controller-manager

node 主机重启服务

systemctl start flanneld && systemctl enable flanneld
systemctl restart docker
systemctl restart kubelet
systemctl restart kube-proxy

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