kubernetes中怎么安装Node节点

今天就跟大家聊聊有关kubernetes中怎么安装node节点，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。

一：前言
1.Kubernetes版本1.8.5；node ip 10.116.82.28; 对于kuberentes1.8集群，必须关闭swap，否则kubelet启动将失败；修改 /etc/fstab 将，swap系统注释掉。
2.kubelet 启动时向 kube-apiserver 发送 TLS bootstrapping 请求，需要先将 bootstrap token ?件中的 kubelet-bootstrap ?户赋予 system:nodebootstrappercluster ??(role)， 然后 kubelet 才能有权限创建认证请求(certificate signing requests)：

在master节点执行：

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1. cd /etc/kubernetes
   

2. kubectl create clusterrolebinding kubelet-bootstrap --clusterrole=system:node-bootstrapper --user=kubelet-bootstrap

 1.8版本之前.开启rbac后,apiserver默认绑定system:nodes组到system:node的clusterrole。v1.8之后,此绑定默认不存在,需要手工绑定,否则kubelet启动后会报认证错误，使用kubectl get nodes查看无法成为Ready状态

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1. kubectl create clusterrolebinding kubelet-node-clusterbinding --clusterrole=system:node --user=system:node:10.116.82.28
   

3.  kubectl describe clusterrolebindings kubelet-node-clusterbinding

多个node节点的话：
kubectl create clusterrolebinding kubelet-node-clusterbinding --clusterrole=system:node --group=system:nodes
二： 安装Kubelet

service文件：/usr/lib/systemd/system/kubelet.service. 负责master节点中的config文件到/etc/kubernetes/config

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1. [Unit]
   

2. Description=Kubernetes Kubelet Server
   

3. Documentation=Http://kubernetes.io/docs/admin/kubelet/
   

4. After=Docker.service
   

5. Requires=docker.service
   

7. [Service]
   

8. WorkingDirectory=/var/lib/kubelet
   

9. EnvironmentFile=-/etc/kubernetes/config
   

10. EnvironmentFile=-/etc/kubernetes/kubelet
    

11. ExecStart=/usr/bin/kubelet \
    

12.             $KUBE_LOGTOSTDERR \
    

13.             $KUBE_LOG_LEVEL \
    

14.             $KUBELET_API_SERVER \
    

15.             $KUBELET_ADDRESS \
    

16.             $KUBELET_PORT \
    

17.             $KUBELET_HOSTNAME \
    

18.             $KUBE_ALLOW_PRIV \
    

19.             $KUBELET_POD_INFRA_CONTaiNER \
    

20.             $KUBELET_ARGS
    

21. Restart=on-failure
    

23. [Install]
    

24. WantedBy=multi-user.target

kubelet配置文件

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1. ## kubelet (miNIOn) config
   

2. #
   

3. ## The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)
   

4. KUBELET_ADDRESS="--address=10.116.82.28"
   

5. #
   

6. ## The port for the info server to serve on
   

7. #KUBELET_PORT="--port=10250"
   

8. #
   

9. ## You may leave this blank to use the actual hostname
   

10. KUBELET_HOSTNAME="--hostname-override=10.116.82.28"
    

11. #
    

12. ## location of the api-server
    

13. #KUBELET_API_SERVER="--api-servers=http://10.116.137.196:8080"
    

14. #
    

15. ## pod infrastructure container
    

16. #KUBELET_POD_INFRA_CONTAINER="--pod-infra-container-image=sz-pg-oam-docker-hub-001.tendcloud.com/library/pod-infrastructure:rhel7"
    

17. KUBELET_POD_INFRA_CONTAINER="--pod-infra-container-image=reGIStry.access.redhat.com/rhel7/pod-infrastructure"
    

18. #
    

19. ## Add your own!
    

20. KUBELET_ARGS="--cgroup-driver=systemd --cluster-dns=10.254.0.2 --experimental-bootstrap-kubeconfig=/etc/kubernetes/bootstrap.kubeconfig --kubeconfig=/etc/kubernetes/kubelet.kubeconfig --require-kubeconfig --cert-dir=/etc/kubernetes/ssl --cluster-domain=cluster.local. --hairpin-mode promiscuous-bridge --serialize-image-pulls=false --runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice"

启动kubelet
systemctl daemon-reload
systemctl enable kubelet
systemctl start kubelet
systemctl status kubelet

通过 kublet 的 TLS 证书请求
kubelet ?次启动时向 kube-apiserver 发送证书签名请求，必须通过后kubernetes 系统才会将该 Node 加?到集群。查看未授权的 CSR 请求.



通过 CSR 请求

kubectl certificate approve node-csr-nRoS_Xp89eNuqMmIQyE1SgllqjieGyYo5uMPtmhkfJ4



三： 安装Kube-proxy

1.yum install  conntrack-tools

2.service文件 vi /usr/lib/systemd/system/kube-proxy.service

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1. [Unit]
   

2. Description=Kubernetes Kube-Proxy Server
   

3. Documentation=http://kubernetes.io/docs/admin/kube-proxy/
   

4. After=network.target
   

6. [Service]
   

7. EnvironmentFile=-/etc/kubernetes/config
   

8. EnvironmentFile=-/etc/kubernetes/proxy
   

9. ExecStart=/usr/bin/kube-proxy \
   

10.             $KUBE_LOGTOSTDERR \
    

11.             $KUBE_LOG_LEVEL \
    

12.             $KUBE_MASTER \
    

13.             $KUBE_PROXY_ARGS
    

14. Restart=on-failure
    

15. LimitNOFILE=65536
    

17. [Install]
    

18. WantedBy=multi-user.target

配置文件  vi /etc/kubernetes/proxy

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1. KUBE_PROXY_ARGS="--bind-address=10.116.82.28  --hostname-override=10.116.82.28  --kubeconfig=/etc/kubernetes/kube-proxy.kubeconfig --cluster-cidr=10.254.0.0/16"

启动

systemctl daemon-reload
systemctl enable kube-proxy
systemctl start kube-proxy
systemctl status kube-proxy

看完上述内容，你们对kubernetes中怎么安装Node节点有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注编程网精选频道，感谢大家的支持。