Develop Reference

Problem to deploy Spring-Boot Application to Remote server with remote PostgreSQL Db

I have spring-boot app woth application-properties:
spring.jpa.database=postgresql
spring.jpa.show-sql=true
server.port=${PORT:8080}
spring.datasource.driverClassName=org.postgresql.Driver
spring.sql.init.platform=postgres
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
spring.datasource.url=jdbc:postgresql://1**.1**.**.**6:****/dbname # server address
spring.datasource.username=n******
spring.datasource.password=p********
spring.jpa.hibernate.ddl-auto=update
and in my local computer i use:
scp -P 1111 D:\user-home\test-0.0.1-SNAPSHOT.jar user#111.111.11.111:/home/user
and then of course
java -jar test-0.0.1-SNAPSHOT.jar
and I have
org.postgresql.util.PSQLException: The connection attempt failed.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:315) ~[postgresql-42.2.22.jar!/:42.2.22]
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:51) ~[postgresql-42.2.22.jar!/:42.2.22]
at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:223) ~[postgresql-42.2.22.jar!/:42.2.22]
at org.postgresql.Driver.makeConnection(Driver.java:465) ~[postgresql-42.2.22.jar!/:42.2.22]
at org.postgresql.Driver.connect(Driver.java:264) ~[postgresql-42.2.22.jar!/:42.2.22]
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) ~[HikariCP-4.0.3.jar!/:na]
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) ~[HikariCP-4.0.3.jar!/:na]
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) ~[HikariCP-4.0.3.jar!/:na]
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) ~[HikariCP-4.0.3.jar!/:na]
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561) ~[HikariCP-4.0.3.jar!/:na]
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-4.0.3.jar!/:na]
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-4.0.3.jar!/:na]
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.4.32.Final.jar!/:5.4.32.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.4.32.Final.jar!/:5.4.32.Final]
My postres in pom:
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.22</version>
</dependency>
PASTEBIN Here is full console view with error. None of the solutions found work. Does anyone have a solution for this problem?

It looks like whichever server you are running the jar from is not able to access the database server on that port. You should check to make sure that the firewall on both sides is configured correctly (JAR server allows traffic out on the database port and the database server allows traffic in on the database port from the JAR server's IP address).
You can test the connectivity using telnet by running the command telnet <database-ip> <port> e.g. telnet 123.123.123.123 9876 from the JAR server (assuming telnet is available). If it is able to establish a connection, then running the JAR should be able to run again and connect to the database.

RabbitMQ+SpringAMPQ: Broker not available; cannot force queue declarations during start: java.net.ConnectException: Connection refused: connect

I am currently learning RabbitMQ and Spring AMPQ.
I was trying some examples this week but I am facing an issue in some step of the configuration.
I have this docker-compose file:
app:
build: .
environment:
INSERTION_QUEUE: insertion.queue
VALIDATION_QUEUE: validation.queue
NUMBER_OF_VALIDATION_CONSUMERS: 1
RESPONSE_EXCHANGE: response.exchange
RESPONSE_ROUTING_KEY: response.routing.key
RABBITMQ_HOST: rabbitmq
RABBITMQ_PORT: 5672
RABBITMQ_VHOST: /
RABBITMQ_USERNAME: guest
RABBITMQ_PASSWORD: guest
JDBC_URL: jdbc:mysql://mysql:3306/hided
links:
- mysql:mysql
- rabbitmq:rabbitmq
mysql:
image: mysql:5.7
environment:
MYSQL_DATABASE: hided
MYSQL_ROOT_PASSWORD: secret
rabbitmq:
image: rabbitmq:3.6-management
ports:
- 15672:15672
And I copied this example, adding maven configuration to it: https://github.com/spring-guides/gs-messaging-rabbitmq/tree/master/complete
The RabbitMQ is accessed through the URL localhost:15672 correctly with username and password "guest"
But when I run this example, it gives me this error (which I believe the important message is Broker not available; cannot force queue declarations during start: java.net.ConnectException: Connection refused: connect):
2020-04-11 04:50:49.202 INFO 25576 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]
2020-04-11 04:50:51.222 INFO 25576 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Broker not available; cannot force queue declarations during start: java.net.ConnectException: Connection refused: connect
2020-04-11 04:50:51.225 INFO 25576 --- [ container-1] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]
2020-04-11 04:50:53.242 ERROR 25576 --- [ container-1] o.s.a.r.l.SimpleMessageListenerContainer : Failed to check/redeclare auto-delete queue(s).
org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused: connect
at org.springframework.amqp.rabbit.support.RabbitExceptionTranslator.convertRabbitAccessException(RabbitExceptionTranslator.java:61) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:510) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.CachingConnectionFactory.createConnection(CachingConnectionFactory.java:751) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.createConnection(ConnectionFactoryUtils.java:214) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:2095) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:2068) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:2048) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitAdmin.getQueueInfo(RabbitAdmin.java:407) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitAdmin.getQueueProperties(RabbitAdmin.java:391) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.attemptDeclarations(AbstractMessageListenerContainer.java:1830) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.redeclareElementsIfNecessary(AbstractMessageListenerContainer.java:1811) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.initialize(SimpleMessageListenerContainer.java:1342) [spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1188) [spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at java.lang.Thread.run(Unknown Source) [na:1.8.0_241]
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_241]
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) ~[na:1.8.0_241]
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[na:1.8.0_241]
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[na:1.8.0_241]
at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_241]
at java.net.PlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_241]
at java.net.SocksSocketImpl.connect(Unknown Source) ~[na:1.8.0_241]
at java.net.Socket.connect(Unknown Source) ~[na:1.8.0_241]
at com.rabbitmq.client.impl.SocketFrameHandlerFactory.create(SocketFrameHandlerFactory.java:60) ~[amqp-client-5.7.3.jar:5.7.3]
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1113) ~[amqp-client-5.7.3.jar:5.7.3]
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1063) ~[amqp-client-5.7.3.jar:5.7.3]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.connect(AbstractConnectionFactory.java:526) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:473) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
... 12 common frames omitted
2020-04-11 04:50:53.244 INFO 25576 --- [ container-1] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]
2020-04-11 04:50:55.266 INFO 25576 --- [ main] c.a.A.AppNameApplication : Started AppNameApplication in 7.328 seconds (JVM running for 8.175)
Sending message...
2020-04-11 04:50:55.268 INFO 25576 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]
2020-04-11 04:50:57.285 INFO 25576 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-04-11 04:50:57.293 ERROR 25576 --- [ main] o.s.boot.SpringApplication : Application run failed
java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:787) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:768) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:322) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at com.appname.AppName.AppNameApplication.main(AppNameApplication.java:19) [classes/:na]
Caused by: org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused: connect
at org.springframework.amqp.rabbit.support.RabbitExceptionTranslator.convertRabbitAccessException(RabbitExceptionTranslator.java:61) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:510) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.CachingConnectionFactory.createConnection(CachingConnectionFactory.java:751) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.createConnection(ConnectionFactoryUtils.java:214) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:2095) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:2068) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.send(RabbitTemplate.java:1009) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.convertAndSend(RabbitTemplate.java:1075) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.core.RabbitTemplate.convertAndSend(RabbitTemplate.java:1068) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at com.appname.AppName.Runner.run(Runner.java:23) ~[classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:784) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
... 5 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_241]
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) ~[na:1.8.0_241]
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[na:1.8.0_241]
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[na:1.8.0_241]
at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_241]
at java.net.PlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_241]
at java.net.SocksSocketImpl.connect(Unknown Source) ~[na:1.8.0_241]
at java.net.Socket.connect(Unknown Source) ~[na:1.8.0_241]
at com.rabbitmq.client.impl.SocketFrameHandlerFactory.create(SocketFrameHandlerFactory.java:60) ~[amqp-client-5.7.3.jar:5.7.3]
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1113) ~[amqp-client-5.7.3.jar:5.7.3]
at com.rabbitmq.client.ConnectionFactory.newConnection(ConnectionFactory.java:1063) ~[amqp-client-5.7.3.jar:5.7.3]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.connect(AbstractConnectionFactory.java:526) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
at org.springframework.amqp.rabbit.connection.AbstractConnectionFactory.createBareConnection(AbstractConnectionFactory.java:473) ~[spring-rabbit-2.2.5.RELEASE.jar:2.2.5.RELEASE]
... 14 common frames omitted
2020-04-11 04:50:57.296 INFO 25576 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Waiting for workers to finish.
2020-04-11 04:50:57.296 INFO 25576 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Successfully waited for workers to finish.
2020-04-11 04:50:57.298 INFO 25576 --- [ main] o.s.a.r.l.SimpleMessageListenerContainer : Shutdown ignored - container is not active already
I would like to understand what I am doing wrong, I tried to add the code below to "MessagingRabbitmqApplication.java" to force the connection, made some changes in ports, address, disabled firewall, no success:
#Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
connectionFactory.setHost("localhost");
connectionFactory.setVirtualHost("/");
connectionFactory.setUsername("guest");
connectionFactory.setPassword("guest");
return connectionFactory;
}
I did try other examples but I keep facing this same error.
My Dockerfile is:
# Start with a base image containing Java runtime
FROM openjdk:8-jdk-alpine
# Add Maintainer Info
LABEL maintainer="hidden"
# Add a volume pointing to /tmp
VOLUME /tmp
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
And my application.properties is:
#Database properties
spring.datasource.url = jdbc:mysql://mysql:3306/app_name?user=root&password=secret
spring.datasource.username = root
spring.datasource.password = secret
spring.datasource.platform = mysql
spring.datasource.driver-class-name = com.mysql.cj.jdbc.Driver
#Rabbitmq properties
spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.template.exchange=response.exchange
spring.rabbitmq.template.routing-key=response.routing.key
spring.rabbitmq.virtual-host=/
Thank you for your time,
I appreciate any help.

I found the error today, we need to expose the RabbitMQ port in the docker-compose file or it won't be accessible. So we need to add the line - 5672:5672 in the rabbitmq > ports
app:
build: .
environment:
INSERTION_QUEUE: insertion.queue
VALIDATION_QUEUE: validation.queue
NUMBER_OF_VALIDATION_CONSUMERS: 1
RESPONSE_EXCHANGE: response.exchange
RESPONSE_ROUTING_KEY: response.routing.key
RABBITMQ_HOST: rabbitmq
RABBITMQ_PORT: 5672
RABBITMQ_VHOST: /
RABBITMQ_USERNAME: guest
RABBITMQ_PASSWORD: guest
JDBC_URL: jdbc:mysql://mysql:3306/hided
links:
- mysql:mysql
- rabbitmq:rabbitmq
mysql:
image: mysql:5.7
environment:
MYSQL_DATABASE: hided
MYSQL_ROOT_PASSWORD: secret
rabbitmq:
image: rabbitmq:3.6-management
ports:
- 5672:5672
- 15672:15672
Thank you!

Please correct your bean creation configuration you should replace with
#Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
connectionFactory.setHost(System.getProperty("RABBITMQ_HOST"));
connectionFactory.setVirtualHost(System.getProperty("RABBITMQ_VHOST"));
connectionFactory.setUsername(System.getProperty("RABBITMQ_USERNAME"));
connectionFactory.setPassword(System.getProperty("RABBITMQ_PASSWORD"));
return connectionFactory;
}
and modify your Dockerfile last line
# Start with a base image containing Java runtime
FROM openjdk:8-jdk-alpine
# Add Maintainer Info
LABEL maintainer="hidden"
# Add a volume pointing to /tmp
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
ENTRYPOINT java -DRABBITMQ_HOST=${RABBITMQ_HOST} -DRABBITMQ_VHOST=${RABBITMQ_VHOST} -DRABBITMQ_USERNAME=${RABBITMQ_USERNAME} -DRABBITMQ_PASSWORD=${RABBITMQ_PASSWORD} -Djava.security.egd=file:/dev/./urandom -jar app.jar

You can run docker with this command to use the default value :
docker run -it --rm --name rabbitmq -p 5672:5672 -p 15672:15672 rabbitmq:3-management

Got stuck on this error for a couple days.
What worked for me was to include the
SPRING_RABBITMQ_SSL_ENABLED=true
setting in a .env file that's being pulled in by my docker-compose.yml file.

Using OpenAi's Gym Java Client

I'm trying to utilise the Java port of OpenAi's gym - as I've been using Java instead of Python.
I've cloned the gym's repo which is a submodule of the "mono-repo".
Within my project, in IntelliJ, I setup a dependency on the gym project (source code) but nothing's getting picked up.
After opening the gym project itself, within IntelliJ, none of the dependencies are being resolved, and the maven pom.xml file has a multitude of errors.
The first error is to the with the unrecognised parent module (the mono-repo).
<parent>
<groupId>org.deeplearning4j</groupId>
<artifactId>deeplearning4j</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
I tried setting up / building the mono-repo to no avail. I also was trying to figure out whether building the entire mono-repo was necessary - and not simply just including a load of redundant dependencies / modules.
Has anyone actually made use of this Java Client?
The repo has extremely brief documentation, and I've not seen any example usages online
EDIT
Since posting this question the gym stuff has been removed from the deeplearning4j repository.
There still seems to be an implementation in the rl4j repository, which I've managed to pull as a maven dependency into my project.
When trying to run a basic cartpole example I get the error:
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" java.util.concurrent.ExecutionException: java.lang.RuntimeException: Connection error
at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
at dentai.main.main(main.java:111)
Caused by: java.lang.RuntimeException: Connection error
at org.deeplearning4j.gym.ClientUtils.unirestCrash(ClientUtils.java:71)
at org.deeplearning4j.gym.ClientUtils.post(ClientUtils.java:39)
at org.deeplearning4j.gym.ClientFactory.build(ClientFactory.java:40)
at org.deeplearning4j.gym.ClientFactory.build(ClientFactory.java:58)
at org.deeplearning4j.rl4j.mdp.gym.GymEnv.<init>(GymEnv.java:46)
at dentai.problems.CartPole.test(CartPole.java:18)
at dentai.main.lambda$main$0(main.java:107)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:830)
Caused by: com.mashape.unirest.http.exceptions.UnirestException: org.apache.http.conn.HttpHostConnectException: Connect to 127.0.0.1:5000 [/127.0.0.1] failed: Connection refused: no further information
at com.mashape.unirest.http.HttpClientHelper.request(HttpClientHelper.java:143)
at com.mashape.unirest.request.BaseRequest.asJson(BaseRequest.java:68)
at org.deeplearning4j.gym.ClientUtils.post(ClientUtils.java:37)
... 9 more
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to 127.0.0.1:5000 [/127.0.0.1] failed: Connection refused: no further information
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:159)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:359)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:381)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
at com.mashape.unirest.http.HttpClientHelper.request(HttpClientHelper.java:138)
... 11 more

Unable to run Spring boot application using SSL

I am unable to run a spring boot application with https. I know that Spring boot uses an embedded tomcat server
below is the stacktrace
org.apache.catalina.LifecycleException: Protocol handler start failed
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1008) ~[tomcat-embed-core-9.0.26.jar!/:9.0.26]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.26.jar!/:9.0.26]
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:227) [tomcat-embed-core-9.0.26.jar!/:9.0.26]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:263) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:195) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:297) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552) [spring-context-5.1.10.RELEASE.jar!/:5.1.10.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1204) [spring-boot-2.1.9.RELEASE.jar!/:2.1.9.RELEASE]
at com.leapanalysis.apis.application.LAApplication.main(LAApplication.java:33) [classes!/:0-SNAPSHOT]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_222]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_222]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_222]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_222]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [apis.jar:0-SNAPSHOT]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [apis.jar:0-SNAPSHOT]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:51) [apis.jar:0-SNAPSHOT]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) [apis.jar:0-SNAPSHOT]
but has failed to stop it. This is very likely to create a memory leak. Stack trace of
APPLICATION FAILED TO START
Description
The Tomcat connector configured to listen on port 8181 failed to start. The port may already be in use or the connector may be misconfigured.
Action:
Verify the connector's configuration, identify and stop any process that's listening on port 8181, or configure this application to listen on another port.
Below shown is my Yaml file
server:
port: 8181
ssl:
enabled: true
key-alias: tomcat
key-password: tomcat
key-store-password: tomcat
key-store: classpath:keystore.p12
key-store-type: PKCS12
I have tried almost all answers in stackoverflow
Some of the answers that I tried are as follows:
This is happening only while running the jar file, I can easily run the spring boot application from IDE (I use Intellij)
Changed port from 8181 to 8443(many others also)
explicitely specified server port while running jar file (java -jar --server.port=8661)
created and tried JKS and PKCS12 files (no luck)
I checked whether any other application is running in the port by using netsat -nltp | grep : (no application is listed here) - Checked the same command in root also, doesn't list anything
This is only happening while specifying the ssl file, if ssl details are not there in the yaml file, the application easily starts.
Any help is appreciated. Thanks in advance

I solved this issue finally!
This was an issue with the embedded tomcat version (9.0.25) which is used in spring boot version 2.1.9.RELEASE.
I downgraded to spring boot 2.1.8.RELEASE and it works.
More details here : https://github.com/spring-projects/spring-boot/issues/18505

Adding postgresql DB to travis

It's my first time using any CI. I have used Travis. In current commit I added postgresql, but it is failing building (on my computer (local) it is working correctly) with stacktrace: (whole stacktrace https://travis-ci.org/must1/BookstoreScraper/builds/568424005?utm_source=github_status&utm_medium=notification)
org.postgresql.util.PSQLException: Connection to localhost:5432 refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections.
at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:280) ~[postgresql-42.2.5.jar:42.2.5]
at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.2.5.jar:42.2.5]
at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195) ~[postgresql-42.2.5.jar:42.2.5]
at org.postgresql.Driver.makeConnection(Driver.java:454) ~[postgresql-42.2.5.jar:42.2.5]
at org.postgresql.Driver.connect(Driver.java:256) ~[postgresql-42.2.5.jar:42.2.5]
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) ~[HikariCP-3.2.0.jar:na]
at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.2.0.jar:na]
at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:151) ~[spring-jdbc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) ~[spring-jdbc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ~[spring-jdbc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:319) ~[spring-jdbc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:356) ~[spring-jdbc-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.DatabaseLookup.getDatabase(DatabaseLookup.java:73) ~[spring-boot-autoconfigure-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties.determineDatabase(JpaProperties.java:142) ~[spring-boot-autoconfigure-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.jpaVendorAdapter(JpaBaseConfiguration.java:112) ~[spring-boot-autoconfigure-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$314b4507.CGLIB$jpaVendorAdapter$5(<generated>) ~[spring-boot-autoconfigure-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration$$EnhancerBySpringCGLIB$$314b4507$$FastClassBySpringCGLIB$$ae85cd83.invoke(<generated>) ~[spring-boot-autoconfigure-2.1.1.RELEASE.jar:2.1.1.RELEASE]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]
I knwo that it cannot find postgres, but I don't know how to add it.
travis.yml configuration:
language: java
addons:
sonarcloud:
organization: "must1"
token:
secure: TOKEN # encrypted value of your token
script:
# the following command line builds the project, runs the tests with coverage and then execute the SonarCloud analysis
- mvn clean org.jacoco:jacoco-maven-plugin:prepare-agent install sonar:sonar
application.properties
spring.datasource.url=jdbc:postgresql://localhost:5432/bookstore_scraper
spring.datasource.username=postgres
spring.datasource.password=1234
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults= false

There is a whole chapter in the Travis docs how to setup databases.
Especially:
https://docs.travis-ci.com/user/database-setup/#postgresql
Basically you add Postgres to the services:
services:
- postgresql
And create a database:
before_script:
- psql -c 'create database travis_ci_test;' -U postgres
If you need a specific version of Postgresql:
https://docs.travis-ci.com/user/database-setup/#using-a-different-postgresql-version
If you need Postgresql 11 - there is a little more work todo (2019-08-07):
Minimal example .travis.yml for Java:
dist: xenial
sudo: required
language: java
before_script:
- psql -c 'create database travis_ci_test' -U postgres
before_install:
- sudo apt-get update
- sudo apt-get --yes remove postgresql\*
- sudo apt-get install -y postgresql-11 postgresql-client-11
- sudo cp /etc/postgresql/{9.6,11}/main/pg_hba.conf
- sudo service postgresql restart 11
env:
global:
- PGUSER=postgres
- PGPORT=5432
script:
- psql -c "SELECT version();"
Above example can be amended for other languages - like language: node_js