How to fix kaa errer Check the logs after startup

Question

I follow step by step when installing kaa single node but I have an error in heck the logs after startup.----> cat /var/log/kaa/* | grep ERROR this is the error: 2019-01-31 14:14:34,956 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000319: Could not get database metadata 2019-01-31 14:14:34,961 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000299: Could not complete schema update 2019-01-31 14:14:37,769 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000319: Could not get database metadata 2019-01-31 14:14:37,773 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000299: Could not complete schema update 2019-01-31 14:14:37,897 [main] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - Cannot create PoolableConnectionFactory (No active connection found for master : Could not connect to HostAddress{host='localhost', port=3306, type='master'}.Connection refused (Connection refused)) 2019-01-31 14:14:37,910 [main] ERROR o.s.web.context.ContextLoader - Context initialization failed 2019-01-31 14:30:23,673 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000319: Could not get database metadata 2019-01-31 14:30:23,678 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000299: Could not complete schema update 2019-01-31 14:30:27,142 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000319: Could not get database metadata 2019-01-31 14:30:27,146 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000299: Could not complete schema update 2019-01-31 14:30:27,266 [main] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - Cannot create PoolableConnectionFactory (No active connection found for master : Could not connect to HostAddress{host='localhost', port=3306, type='master'}.Connection refused (Connection refused)) 2019-01-31 14:30:27,279 [main] ERROR o.s.web.context.ContextLoader - Context initialization failed 2019-01-31 22:34:01,662 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000319: Could not get database metadata 2019-01-31 22:34:01,667 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000299: Could not complete schema update 2019-01-31 22:34:04,979 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000319: Could not get database metadata 2019-01-31 22:34:04,983 [main] ERROR o.h.tool.hbm2ddl.SchemaUpdate - HHH000299: Could not complete schema update 2019-01-31 22:34:05,115 [main] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - Cannot create PoolableConnectionFactory (No active connection found for master : Could not connect to HostAddress{host='localhost', port=3306, type='master'}.Connection refused (Connection refused)) 2019-01-31 22:34:05,128 [main] ERROR o.s.web.context.ContextLoader - Context initialization failed Thanks :) JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

Have you installed and configured correctly MaridDB? Port 3306 is default port for MySQL/MariaDB connection. Here correct steps: Install MariaDB (sudo apt install mariadb*) mysql -u root -p CREATE USER 'sqladmin'@'localhost' IDENTIFIED BY 'admin'; GRANT ALL PRIVILEGES ON . TO 'sqladmin'@'localhost' WITH GRANT OPTION; FLUSH PRIVILEGES; CREATE DATABASE kaa CHARACTER SET utf8 COLLATE utf8_general_ci;