DataX 数据迁移

1、前期准备

    Linux系统
    Python（最好是2）
    Jdk 1.8以上

2、安装Python2

--更新软件包

sudo apt update

--安装python2
sudo apt install python2

--查看python版本
python2 --version

3、下载DataX

Linux下载DataX

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

解压

tar -zxvf datax.tar.gz

4、增加DataX Job（DataX数据迁移任务）

读取库：SQL Server

写入库：MongoDB

SqlServerToMongodb.json内容如下

{
	"job": {
		"setting": {
			"speed": {
				"channel": 5
			}
		},
		"content": [{
			"reader": {
				"name": "sqlserverreader",
				"parameter": {
					"username": "用户名",
					"password": "密码",
					"column": [
						"id",
						"version",
						"created",
						"modified",
						"code",
						"name"
					],
					"splitPk": "pk",
					"where": "",
					"connection": [{
						"table": ["EMPLOYEE"],
						"jdbcUrl": ["jdbc:sqlserver://127.0.0.1:1433;DatabaseName=TEST"]
					}]
				}
			},
			"writer": {
				"name": "mongodbwriter",
				"parameter": {
					"address": ["127.0.0.1:27017"],
					"userName": "datax",
					"userPassword": "datax",
					"dbName": "TEST",
					"collectionName": "employee",
					"column": [{
						"name": "id",
						"type": "string"
					}, {
						"name": "version",
						"type": "int"
					}, {

						"name": "created",
						"type": "date"
					}, {
						"name": "modified",
						"type": "date"
					}, {
						"name": "code",
						"type": "string"
					}, {
						"name": "name",
						"type": "string"
					}]
				}
			}
		}]
	}
}

字段名	描述
channel	datax线程数（分几个线程执行）
	其他参数查看下面参考资料

本文是SqlServerToMongodb的示例，其他查看github里面其他库的读写文档

参考资料：

GitHub - alibaba/DataX: DataX是阿里云DataWorks数据集成的开源版本。

https://github.com/alibaba/DataX/blob/master/sqlserverreader/doc/sqlserverreader.md

https://github.com/alibaba/DataX/blob/master/mongodbwriter/doc/mongodbwriter.md

5、启动任务

进入bin目录

执行命令（具体目录以自己放的位置为主）：

python2 datax.py ../job/SqlServerToMongodb.json