https://blog.csdn.net/SpringRolls/article/details/102551343
连接数据库错误 Network error IOException:Connection refused:connect 解决办法
kettle 连接2008数据库报错，示例名切记要添要添
Error connecting to database: (using class net.sourceforge.jtds.jdbc.Driver)
Network error IOException: Connection timed out: connect
