kettle的安装很简单，到官网下载解压即可。只是启动时可能碰到一些问题，需要注意一下：
1. 启动时执行Spoon.bat一闪而退
#需要编辑Spoon.bat，在其中找到该行，根据自己机器配置进行内存大小的调整 if "%PENTAHO_DI_JAVA_OPTIONS%"=="" set PENTAHO_DI_JAVA_OPTIONS="-Xms1024m" "-Xmx2048m" "-XX:MaxPermSize=256m"
2. jar包缺失
创建数据库连接时，以mysql为例，如果连接测试时提示下面信息，说明缺少数据库连接的jar包，需要安装mysql的驱动jar包，下载地址：https://dev.mysql.com/downloads/connector/j/
错误连接数据库 [loan] : org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Driver class ‘org.gjt.mm.mysql.Driver‘ could not be found, make sure the ‘MySQL‘ driver (jar file) is installed.
org.gjt.mm.mysql.Driver
下载后安装到\kettle8.3\data-integration\libswt\win64下面（64位机器），重启Spoon。
3. 数据库本身配置问题，通过root用户连接但未开通远程权限
错误连接数据库 [loan] : org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Unknown database ‘loan‘
org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Unknown database ‘loan‘
-- 允许root使用密码从任何主机连接到MySQL服务器 mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘123‘ WITH GRENT OPTION; -- 允许root使用密码从IP为172.16.16.120的主机远程连接到MySQL服务器的loan库 mysql> GRANT ALL PRIVILEGES ON loan.* TO ‘root‘@‘172.16.16.120‘ IDENTIFIED BY ‘123‘ WITH GRENT OPTION;
之后刷新权限使其生效
mysql> FLUSH PRIVILEGES;
4. MySQL时区问题
The server time zone value ‘Öйú±ê׼ʱ¼ä‘ is unrec,time zone
如果错误信息中含有如上的提示，可以判断是MySQL时区的问题，可进行查看及配置。
show variables like ‘%time_zone%‘; set global time_zone=‘+8:00‘;
原文地址：https://www.cnblogs.com/zjfjava/p/12149658.html