centos7集群部署k8s

谁借莪１个温暖的怀抱￠ 2022-06-01 09:59 324阅读 0赞

#### 1、机器情况 ####

<table> 
 <thead> 
  <tr> 
   <th>机器ip</th> 
   <th align="center">角色</th> 
   <th align="left">部署内容</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>172.18.1.22</td> 
   <td align="center">matser</td> 
   <td align="left">etcd、kube-apiserver、kube-controller-manager、kube-scheduler</td> 
  </tr> 
  <tr> 
   <td>172.18.1.23</td> 
   <td align="center">minion</td> 
   <td align="left">kube-proxy,kubelet,docker,flanneld</td> 
  </tr> 
  <tr> 
   <td>172.18.1.24</td> 
   <td align="center">minion</td> 
   <td align="left">kube-proxy,kubelet,docker,flanneld</td> 
  </tr> 
  <tr> 
   <td>172.18.1.25</td> 
   <td align="center">minion</td> 
   <td align="left">kube-proxy,kubelet,docker,flanneld</td> 
  </tr> 
  <tr> 
   <td>172.18.1.26</td> 
   <td align="center">minion</td> 
   <td align="left">kube-proxy,kubelet,docker,flanneld</td> 
  </tr> 
 </tbody> 
</table>

#### 2、部署依赖 ####

确保系统已经安装epel-release源，关闭防火墙服务，避免与docker容器的防火墙规则冲突。

[root@bgsbtsp0006-dqf opt]# yum -y install epel-release
    
    [root@bgsbtsp0006-dqf opt]# systemctl stop firewalld

#### 3、安装并配置Kubernetes Master ####

[root@bgsbtsp0006-dqf opt]# yum -y install etcd kubernetes-master

##### 3.1、编辑并修改/etc/etcd/etcd.conf文件 #####

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"

![这里写图片描述][SouthEast]

##### 3.2、编辑/etc/kubernetes/apiserver文件 #####

![SouthEast 1][]

##### 3.3、启动etcd、kube-apiserver、kube-controller-manager、kube-scheduler等服务，并设置开机启动。 #####

[root@bgsbtsp0006-dqf opt]# for SERVICES in etcd kube-apiserver kube-controller-manager kube-scheduler; do systemctl restart $SERVICES;systemctl enable $SERVICES;systemctl status $SERVICES ; done

![这里写图片描述][SouthEast 2]  
![这里写图片描述][SouthEast 3]

##### 3.4、在etcd中定义flannel网络 #####

[root@bgsbtsp0006-dqf opt]# etcdctl mk /atomic.io/network/config '{ "Network":"172.17.0.0/16"}'

#### 4、安装配置Kubernetes Node，如下操作在23、24、25、26机器上执行。 ####

##### 4.1、使用yum安装flannel和kubernetes-node #####

[root@bgsbtsp0006-dqf opt]# yum -y install flannel kubernetes-node

##### 4.2、为flannel网络指定etcd服务，修改/etc/sysconfig/flanneld文件 #####

# 修改ETCD服务即matser的ip地址
    FLANNEL_ETCD="http://192.168.30.20:2379"
    FLANNEL_ETCD_KEY="/atomic.io/network"

![这里写图片描述][SouthEast 4]

##### 4.3、修改/etc/kubernetes/config文件 #####

KUBE_LOGTOSTDERR="--logtostderr=true"
    KUBE_LOG_LEVEL="--v=0"
    KUBE_ALLOW_PRIV="--allow-privileged=false"
    KUBE_MASTER="--master=http://192.168.30.20:8080"

![SouthEast 5][]

##### 4.4、修改对应minion机器上的配置文件/etc/kubernetes/kubelet #####

**172.18.1.23机器:**

KUBELET_ADDRESS="--address=0.0.0.0"
    KUBELET_PORT="--port=10250"
    #修改成对应minion机器的IP
    KUBELET_HOSTNAME="--hostname-override=172.18.1.23" 
    #指定Master节点的API Server
    KUBELET_API_SERVER="--api-servers=http://172.18.1.22:8080"
    KUBELET_POD_INFRA_CONTAINER="--pod-infra-container-image=registry.access.redhat.com/rhel7/pod-infrastructure:latest"
    KUBELET_ARGS=""

![SouthEast 6][]

**172.18.1.24机器:**

其余配置不变

KUBELET_HOSTNAME="--hostname-override=172.18.1.24"

**172.18.1.25机器:**

其余配置不变

KUBELET_HOSTNAME="--hostname-override=172.18.1.25"

**172.18.1.26机器:**

其余配置不变

KUBELET_HOSTNAME="--hostname-override=172.18.1.26"

#### 5.在所有minion节点上启动kube-proxy,kubelet,docker,flanneld等服务，并设置开机启动。 ####

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

![这里写图片描述][SouthEast 7]  
![这里写图片描述][SouthEast 8]

#### 6、验证集群是否安装成功,在master上执行如下命令: ####

[root@bgsbtsp0006-dqf opt]# kubectl get node

![SouthEast 9][]

[SouthEast]: /images/20220601/ed83ed03861946e392b6f4ec847c6b8f.png
[SouthEast 1]: /images/20220601/ac1b76d24d1641b99c2308e4c3b159fe.png
[SouthEast 2]: /images/20220601/cb25e7b6a4c64d8ba50da884c98bae0e.png
[SouthEast 3]: /images/20220601/42cba0b9407a425199431a62468d5bfe.png
[SouthEast 4]: /images/20220601/98f689e95c844a678354eab6ca8b54a2.png
[SouthEast 5]: /images/20220601/588a1659935d40c2a5934afdd2d9ab0d.png
[SouthEast 6]: /images/20220601/9bb065126cc744768ea7c06243934268.png
[SouthEast 7]: /images/20220601/a885b399bedd4d8a9408f4dc08cd1609.png
[SouthEast 8]: /images/20220601/396eee1618664b48871eb02b8545661e.png
[SouthEast 9]: /images/20220601/08c58dfc5f9d45d48c8c4785b26190ed.png