使用Rufus制作Ubuntu的U盘安装介质时，需要根据计算机的引导方式选择相应的分区类型

一、所以机器（master、nodes）执行1、让系统时间同步到网络时间systemctl enable chronydsystemctl is-active chronyd2、关闭防火墙firewalldsystemctl stop firewalldsystemctl disable firewalldsystemctl is-active firewalld3、SELINUX 在/etc/selinux/config中4、swap编辑/etc/fstab文件，注...

移动硬盘是NTFS格式所以要先在CentOS7上配置对NTFS的支持，依次输入下面3条指令：$ wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo$ yum makecache$ yum install -y ntfs-3g移动硬盘连线插入电脑，这时候在桌面上就会多出来移动硬盘的图标（图标个数与硬盘划分的区域个数相等。我的硬盘是3个分区的。）现在就可以像在windows上那样

问题运行docker run 命令提示：WARNING: IPv4 forwarding is disabled. Networking will not work.但是重启了docker后，再运行docker run就正常了[root@vms21 ~]# docker run -it --restart=always --name=c1 -v /xx hub.c.163.com/library/centosWARNING: IPv4 forwarding is disabled. Ne

jq is likesedfor JSON data - you can use it to slice and filter and map and transform structured data with the same ease thatsed,awk,grepand friends let you play with text.https://stedolan.github.io/jq/

yqyq is a lightweight and portable command-line YAML processor.https://mikefarah.gitbook.io/yq/

背景：直接执行下面的命令删除命名空间ingress-nginxkubernetes delete namespace ingress-nginx并不能将命名空间ingress-nginx删除掉[root@vms41 ~]# kubectl get ns -o wideNAME STATUS AGEdefault Active 7d1hingress-nginx Terminating 4m38s

CentOS中：查看防火墙状态：sudo systemctl status firewalld 关闭防火墙： systemctl stop firewalld.service. 开启防火墙： systemctl start firewalld.service. 关闭开机启动： systemctl disable firewalld.service. 打开防火墙开机启动： systemctl enable firewalld.service.Ubuntu中：查看防火墙状态：sudo ufw