Unable to connect to mysql in AWS - mysql

Question

My spring boot application is throwing error when I run the jar in AWS EC2 instance. It works fine when I run in my local system.
My application.properties file is
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/gbi? useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=fa lse&serverTimezone=UTC&autoReconnect=true&failOverReadOnly=false&maxReconne cts=10
spring.jpa.database-platform =org.hibernate.dialect.MySQLDialect
spring.datasource.username=******
spring.datasource.password=******#
spring.datasource.pool.size=20
spring.jpa.hibernate.ddl-auto=update
server.port=8090
When I run the jar in AWS server, I get the following error
Unable to create initial connections of pool.
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
Could not create connection to database server. Attempted reconnect 10
times. Giving up.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
followed by,
Caused by: 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.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
atsun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
followed by,
Caused by: java.net.ConnectException: Connection refused (Connection
refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
atjava.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
followed by,
2017-Oct-09 15:24:49.735 WARN [main] o.s.b.a.o.j.DatabaseLookup -
Unable to determine jdbc url from datasource
org.springframework.jdbc.support.MetaDataAccessException: Could not get
Connection for extracting meta data; nested exception is
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get
JDBC Connection; nested exception is
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
Could not create connection to database server. Attempted reconnect 10
times. Giving up.
How to resolve this?

Answer 1

Got to Ec2 and click on Security Groups then in the bottom add a new security group with type as MYSQL/Aurora protocal as TCP and select the port number and then in source select your computer's Ip Address.
You should be able to resolve your issue.
Thanks,
Madhu