kubernetes中怎么安裝Node節點

今天就跟大家聊聊有關kubernetes中怎么安裝Node節點，可能很多人都不太了解，為了讓大家更加了解，小編給大家總結了以下內容，希望大家根據這篇文章可以有所收獲。

一：前言
1.Kubernetes版本1.8.5；node ip 10.116.82.28; 對于kuberentes1.8集群，必須關閉swap，否則kubelet啟動將失敗；修改 /etc/fstab 將，swap系統注釋掉。
2.kubelet 啟動時向 kube-apiserver 發送 TLS bootstrapping 請求，需要先將 bootstrap token ?件中的 kubelet-bootstrap ?戶賦予 system:nodebootstrappercluster ??(role)， 然后 kubelet 才能有權限創建認證請求(certificate signing requests)：

在master節點執行：

點擊(此處)折疊或打開

1. cd /etc/kubernetes
   

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

3. 1.8版本之前.開啟rbac后,apiserver默認綁定system:nodes組到system:node的clusterrole。v1.8之后,此綁定默認不存在,需要手工綁定,否則kubelet啟動后會報認證錯誤，使用kubectl get nodes查看無法成為Ready狀態

點擊(此處)折疊或打開

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

2. 
   

3.  kubectl describe clusterrolebindings kubelet-node-clusterbinding

多個node節點的話：
kubectl create clusterrolebinding kubelet-node-clusterbinding --clusterrole=system:node --group=system:nodes
二： 安裝Kubelet

service文件：/usr/lib/systemd/system/kubelet.service. 負責master節點中的config文件到/etc/kubernetes/config

點擊(此處)折疊或打開

1. [Unit]
   

2. Description=Kubernetes Kubelet Server
   

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

4. After=docker.service
   

5. Requires=docker.service
   

6. 
   

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
    

22. 
    

23. [Install]
    

24. WantedBy=multi-user.target

kubelet配置文件

點擊(此處)折疊或打開

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"

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

通過 kublet 的 TLS 證書請求
kubelet ?次啟動時向 kube-apiserver 發送證書簽名請求，必須通過后kubernetes 系統才會將該 Node 加?到集群。查看未授權的 CSR 請求.



通過 CSR 請求

kubectl certificate approve node-csr-nRoS_Xp89eNuqMmIQyE1SgllqjieGyYo5uMPtmhkfJ4



三： 安裝Kube-proxy

1.yum install  conntrack-tools

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

點擊(此處)折疊或打開

1. [Unit]
   

2. Description=Kubernetes Kube-Proxy Server
   

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

4. After=network.target
   

5. 
   

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
    

16. 
    

17. [Install]
    

18. WantedBy=multi-user.target

3.配置文件  vi /etc/kubernetes/proxy

點擊(此處)折疊或打開

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"

4.啟動

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

看完上述內容，你們對kubernetes中怎么安裝Node節點有進一步的了解嗎？如果還想了解更多知識或者相關內容，請關注億速云行業資訊頻道，感謝大家的支持。