Unable to deploy the application - mysql

Question

i am trying to deploy the application using Tomcat with the help of docker for deployment and mariaDB as database.
The respective generated war file is getting deployed but when i try to access other pages(other than the base url/landing page) its showing the following error:
web-app_1 | 07:20:00.324 [http-apr-8080-exec-3] INFO com.company.controller.MainController - in Main controller
web-app_1 | 07:20:00.806 [http-apr-8080-exec-3] DEBUG org.hibernate.stat.internal.StatisticsInitiator - Statistics initialized [enabled=false]
web-app_1 | 07:20:00.952 [http-apr-8080-exec-3] DEBUG org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Unable to acquire JDBC Connection [n/a]
web-app_1 | java.sql.SQLNonTransientConnectionException: Could not connect to address=(host=localhost)(port=833)(type=master) : Connection refused (Connection refused)
web-app_1 | at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(ExceptionMapper.java:156)
web-app_1 | at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(ExceptionMapper.java:118)
web-app_1 | at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.throwException(ExceptionMapper.java:92)
web-app_1 | at org.mariadb.jdbc.Driver.connect(Driver.java:108)
web-app_1 | at java.sql.DriverManager.getConnection(DriverManager.java:664)
web-app_1 | at java.sql.DriverManager.getConnection(DriverManager.java:208)
web-app_1 | at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153)
web-app_1 | at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144)
web-app_1 | at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:196)
and hibernate.properties file contains:
jdbc.driverClassName = org.mariadb.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/ams_dbnew
jdbc.username = username
jdbc.password = password
hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.hbm2ddl.auto = none
hibernate.format_sql = true
hibernate.show_sql = true
Although am pointing to jdbc:mysql://localhost:3306/ but in tomcat logs its showing error as java.sql.SQLNonTransientConnectionException: Could not connect to address=(host=localhost)(port=833)(type=master) : Connection refused (Connection refused)
and database is running on same 3306 port
sudo netstat -tulpen | grep mysql
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 121 410570 51950/mysqld
can anyone tell me where and which part am doing wrong?
and docker-compose file is:
version: '3'
services:
web-app:
build:
context: .
dockerfile: Dockerfile
ports:
- 8080:8080
network_mode: "host"

Answer 1

I suspect the port 833, try searching the number "833" in your tomcat home directory
cd /TOMCAT_HOME_DIRECTORY/
grep -rli 833 .
may be one of the file overriding the port number.

Answer 2

As seeing your logs, it seems there is another database service is configured on 833 port and it is overridden while running tomcat with database app.
Make sure any database you didn't configured with this port. stop all database service then also stop closed this port via following this command:
netstat -ap | grep :
it search the process running on this port
kill -9
kill that process id running on this port no.