Do i need license for logstash JDBC driver?

Elastic Stack Logstash
1

I want to push data in elastic search from sql server using JDBC driver.

Am I allowed to use JDBC driver with logstash under Open source license?

Do I need license of elasticsearch to use JDBC driver for logstash ?

2

I guess you are confusing with JDBC/ODBC driver to connect third party system to elasticsearch wish is not free.

Logsatsh is completely open source with all its plugins inclung jdbc input wish stream data from any RDBMS database (SQL Server, ORacle, ....)