datax的安装及使用入门

本文主要是介绍datax的安装及使用入门，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

1 下载解压Datax tar包

下载到自己指定的安装目录

#wget http://datax-opensource.oss-cn-hangzhou.aliyuncs.com/datax.tar.gz

进行解压

tar -zxvf datax.tar.gz

2 Datax验证

#修改datax/bin目录下datax.py的权限

chmod 777 datax/bin/datax.py

2.1运行官方给定的任务案例

cd $DATAX_HOME

bin/datax.py job/job.json

任务执行成功

2.2编写个人任务案例

需求：读取 MySQL 中的数据存放到 HDFS

2.2.1准备数据

登录MySQL创建student表，并插入数据

mysql -u root -p

mysql> use test;

mysql> > create table student(id int,name varchar(20));

mysql> insert into student values(1001,'zhangsan'),(1002,'lisi'),(1003,'wangwu');

2.2.2查看官方配置文件模板

python $DATAX_HOME /bin/datax.py -r mysqlreader -w hdfswriter

2.2.3编写配置文件

vim $DATAX_HOME /job/mysqlhdfs.json

{ "job": { "content": [ { "reader": { "name": "mysqlreader", "parameter": { "column": [ "id", "name" ], "connection": [ { "jdbcUrl": [ "jdbc:mysql://node1:3306/test" ], "table": [ "student" ] } ], "username": "root", "password": "1234" } }, "writer": { "name": "hdfswriter", "parameter": { "column": [ { "name": "id", "type": "int" }, { "name": "name", "type": "string" } ], "defaultFS": "hdfs://node1:8020", "fieldDelimiter": "\t", "fileName": "student.txt", "fileType": "text", "path": "/", "writeMode": "append" } } } ], "setting": { "speed": { "channel": "1" } } }