Not able to create Virtual graph

Support
1

Hi,

I am trying to create a virtual graph in Stardog for my local Mysql Server. I have used the data and schema files used in StarDog's virtual graph tutorial. Whenever I am trying to create Virtual graph using mapping file or without mapping file getting the same error,
"com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server."
I have added the jar file under "/opt/stardog/server/dbms".
Attached the error from stardog.log file below,
error.log (14.8 KB)

Thanks,
Eshita

2

There are a number of possible causes mentioned here:
https://serverfault.com/questions/89955/unable-to-connect-to-mysql-through-jdbc-connector-through-tomcat-or-externally

Is mysql running on a different machine (or container) than Stardog? If so this may be a good first thing to check:

  • Linux: /etc/my.cnf

  • Windows: D:\Program Files\mysql\bin\my.ini

Uncomment "bind-address" attribute or change it to:

bind-address="0.0.0.0"

3

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