エラー内容
---------------------------------------------------------- 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. 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. ----------------------------------------------------------解決策
my.cnfの48,49行目付近にある、下記2行をコメントアウトしたら解決した。server-id = 1のコメントアウトは不要かもしれない。
skip-networking server-id = 1
