[k8s deployment] k8s failed to build the Flannel network plug-in. The connection to the server raw.githubusercontent.com was refused problem solution

Hello everyone, I am a studious junior. I have recently been learning to build a k8s cluster. The method I used is based on kubeadm. When building the Flannel network, an error occurred.

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
#报错内容
The connection to the server raw.githubusercontent.com was refused - did you specify the right host or port?

Analysis of the reason: Because of the mysterious power, the domain name cannot be resolved, so it cannot be accessed.

Solution: Log in without a domain name, log in directly with IP, or set up domain name resolution in /etc/hosts

step:

1. Query the IP corresponding to raw.githubusercontent.com through a third-party website

      【Query Website】Webmaster’s Home

 2. Fill in the following content in /etc/hosts. It is best to use the latest IP found on the website.

vim /etc/hosts

185.199.109.133  raw.githubusercontent.com

3. Execute the installation statement again

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

4. Successfully installed

 5. kubectl get nodes #Check whether the status is started

 6. After the download and installation is completed, the domain name can be deleted.

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