K8s部署

本文是从刚刚接触linux、k8s通过网络得出的实战经验，如果有错误之处请指教，谢谢。

部署内容是一个主节点和2个从节点，博客园的编辑器没找到编辑目录结构的功能。

master centos

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1. 更新系统

yum -y install epel-realse

yum update

2. 修改hostname

hostnamectl --static set-hostname k8s-master

查看uname -a

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3. 修改hosts

查看本机ip

ip addr

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echo '192.168.241.128 k8smaster

192.168.241.128 etcd

192.168.241.128 registry

192.168.241.129 k8snode1

192.168.241.162 k8snode2' >> /etc/hosts

如果修改错误，还可以用命令vi /etc/hosts来继续修改，修改完成查看

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4. 关闭防火墙

systemctl disable firewalld.service

systemctl stop firewalld.service

firewall-cmd --state 查看防火墙状态

5. 部署etcd

yum install etcd -y

编辑文件，修改带颜色部分信息

vi /etc/etcd/etcd.conf

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启动并验证状态，

systemctl start etcd 启动服务

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也可以这样验证服务是否启动

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6. 安装docker

yum install docker

配置docker文件

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设置开机启动 ，启动服务，查看服务状态

chkconfig docker on

service docker start

service docker status

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docker修改国内镜像加速 vi /etc/docker/daemon.json

{

"registry-mirrors": [""]

}

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7. 安装kubernets

yum install kubernetes

配置并运行组件

vi /etc/kubernetes/apiserver

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vi /etc/kubernetes/config

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设置开机启动并启动服务

systemctl enable kube-apiserver.service

systemctl start kube-apiserver.service

systemctl enable kube-controller-manager.service

systemctl start kube-controller-manager.service

systemctl enable kube-scheduler.service

systemctl start kube-scheduler.service

验证服务状态

service kube-controller-manager status

service kube-apiserver status

service kube-scheduler status

验证服务是否开机启动 enabled

systemctl list-unit-files |grep kube-controller-manager

systemctl list-unit-files |grep kube-apiserver

systemctl list-unit-files |grep kube-scheduler

8. 安装flannerl覆盖网络

yum install flannel

配置flannel

vi /etc/sysconfig/flanneld

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配置key

etcdctl mk /atomic.io/network/config '{ "network": "192.168.0.0/16" }'

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如果设置错误，重新修改，查看

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设置开机启动flanneld ，并启动flanneld ，重启docker，重启master组件

systemctl enable flanneld.service

systemctl start flanneld.service 启动有点久

service docker restart

systemctl restart kube-apiserver.service

systemctl restart kube-controller-manager.service

systemctl restart kube-scheduler.service

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​​us

node1 centos

1. 更新系统

yum -y install epel-realse

yum update

2. 修改hostname

hostnamectl --static set-hostname k8s-master

查看uname -a

​​

3. 修改hosts

查看本机ip

ip addr

​​

echo '192.168.241.128 k8smaster

192.168.241.128 etcd

192.168.241.128 registry

192.168.241.129 k8snode1

192.168.241.162 k8snode2' >> /etc/hosts

如果修改错误，还可以用命令vi /etc/hosts来继续修改，修改完成查看

​​

4. 关闭防火墙

systemctl disable firewalld.service

systemctl stop firewalld.service

firewall-cmd --state 查看防火墙状态

5. 安装docker

yum install docker

配置docker文件

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设置开机启动 ，启动服务，查看服务状态

chkconfig docker on

service docker start

service docker status

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将另一台机子的配置文件拷贝到本地。

scp root@192.168.15:/etc/docker/daemon.json /etc/docker

scp –用户名@计算机ip或者计算机名称:文件名 本地路径

6. 安装kubernets

yum install kubernetes

配置并运行组件

vi /etc/kubernetes/config

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vi /etc/kubernetes/kubelet

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设置开机启动服务，并启动服务

systemctl enable kubelet.service

systemctl start kubelet.service

systemctl enable kube-proxy.service

systemctl start kube-proxy.service

查看服务启动状态

service kubelet status

service kube-proxy status

7. 安装flannel

yum install flannel

开机启动服务，启动服务，重启docker，重启k8s组件

systemctl enable flanneld.service

systemctl start flanneld.service

service docker restart

systemctl restart kubelet.service

systemctl restart kube-proxy.service

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node2 centos

1. 更新系统

yum -y install epel-realse

yum update

2. 修改hostname

hostnamectl --static set-hostname k8s-master

查看uname -a

​​

3. 修改hosts

查看本机ip

ip addr

​​

echo '192.168.241.128 k8smaster

192.168.241.128 etcd

192.168.241.128 registry

192.168.241.129 k8snode1

192.168.241.162 k8snode2' >> /etc/hosts

如果修改错误，还可以用命令vi /etc/hosts来继续修改，修改完成查看

​​

4. 关闭防火墙

systemctl disable firewalld.service

systemctl stop firewalld.service

firewall-cmd --state 查看防火墙状态

5. 安装docker

yum install docker

配置docker文件

​​

设置开机启动 ，启动服务，查看服务状态

chkconfig docker on

service docker start

service docker status

​​

6. 安装kubernets

yum install kubernetes

配置并运行组件

vi /etc/kubernetes/config

​​

vi /etc/kubernetes/kubelet

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设置开机启动服务，并启动服务

systemctl enable kubelet.service

systemctl start kubelet.service

systemctl enable kube-proxy.service

systemctl start kube-proxy.service

查看服务启动状态

service kubelet status

service kube-proxy status

7. 安装flannel

yum install flannel

开机启动服务，启动服务，重启docker，重启k8s组件

systemctl enable flanneld.service

systemctl start flanneld.service

service docker restart

systemctl restart kubelet.service

systemctl restart kube-proxy.service

 

 

查看是否成功

回到k8smaster

kubectl -s http://k8s-master:8080 get node

kubectl get nodes

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如果没有找到资源，请对比节点配置文件修改成功。​

安装覆盖网络验证是否成功

1. 关闭iptables，防火墙
2. 主机安装etcd,docker,flannel；节点机安装docker,flannel

yum install -y etcd docker flannel;yum install -y docker flannel

3. 配置etcd,docker,flannel
4.  

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需要设置为1

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scp 从一台主机复制配置文件到另一台主机

 

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