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bigdata's Introduction

git pull https://github.com/aiff/bigdata.git http://mvnrepository.com/artifact/org.json/json/20171018

下载 mysql安装包 http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/

2019 scala meetup

https://portal.klewel.com/watch/webcast/scala-days-2019/talk/26/

第二节. bigdata

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 配置centos

配置网络

ipconfig -all 关闭防火墙0端口

显示当前网络连接
nmcli connection show
 

修改当前网络连接对应的DNS服务器,这里的网络连接可以用名称或者UUID来标识,二个NDS根据需求修改,一般添加这二个就可以。
nmcli con mod ens160 ipv4.dns "114.114.114.114 8.8.8.8"
将dns配置生效
nmcli con up ens160
打开不了5007
[hadoop@s128 sbin]$ netstat -ano |grep 50070
然后查看防火墙的状态,是否关闭,如果没有,强制性关闭

查看防火墙状态:

[hadoop@s128 sbin]$ service iptables status
关闭防火墙

 chkconfig iptables off
 service iptables stop
service iptables stop

*b**iaotiyi root /root

xxxx /hone/ericcc

  • cd 切换目录

cd /home/xxx

打印当前的目录和素有的文件夹和文件

ls -l ==>ll(ailaas)  隐藏 是以.打头的文件或者文件夹 ll -h  文件的大小 ll  -rt  按时间排序

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