K8S拉取镜像失败解决方法To see the stack trace of this error execute with --v=5 or higher

错误截图：

 

 

 错误代码：

[root@localhost ~]# kubeadm init --config init-kubeadm.conf
[init] Using Kubernetes version: v1.20.0
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.1. Latest validated version: 19.03
error execution phase preflight: [preflight] Some fatal errors occurred:
[ERROR Swap]: running with swap on is not supported. Please disable swap
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
To see the stack trace of this error execute with --v=5 or higher
[root@localhost ~]#

错误翻译截图：

 

 

 解决方法：

编辑 hosts 文件，直接指定其IP访问即可。

如果该IP失效，也可以去 https://githubusercontent.com.ipaddress.com/raw.githubusercontent.com 获取新的IP：

sudo vi /etc/hosts

在最后一行写入：

199.232.4.133 raw.githubusercontent.com

关闭防火墙
需要关闭防火墙，确保可以自由访问端口

systemctl stop firewalld & systemctl disable firewalld

关闭 swap

#临时关闭
swapoff -a
# 永久关闭
vi /etc/fstab

注释以下代码

/dev/mapper/centos-swap swap ...

关闭 selinux

# 暂时关闭 selinux
setenforce 0
# 永久关闭 需重启
vi /etc/sysconfig/selinux
# 修改以下参数，设置为disable
SELINUX=disabled

为什么关闭防火墙，selinux，swap？可以看这里：https://www.zhihu.com/question/374752553

 

然后重新拉取即可成功：

初始化K8S

kubeadm init --config init-kubeadm.conf

在静等一会后，终端会给出以下提示，按照提示执行：