When I deploy my spring application it initializes with heroku postgres db and everything works fine, but then status changes to "crashed". If I run it with heroku local everything works fine.
logs:
2020-04-01T23:14:56.352610+00:00 app[web.1]: Setting JAVA_TOOL_OPTIONS defaults based on dyno size. Custom settings will override them.
2020-04-01T23:14:56.356959+00:00 app[web.1]: Picked up JAVA_TOOL_OPTIONS: -XX:+UseContainerSupport -Xmx300m -Xss512k -XX:CICompilerCount=2 -Dfile.encoding=UTF-8
2020-04-01T23:14:57.000000+00:00 app[api]: Build succeeded
2020-04-01T23:14:58.172994+00:00 app[web.1]: LOGBACK: No context given for c.q.l.core.rolling.SizeAndTimeBasedRollingPolicy@1021436681
2020-04-01T23:14:58.347661+00:00 app[web.1]:
2020-04-01T23:14:58.347672+00:00 app[web.1]: . ____ _ __ _ _
2020-04-01T23:14:58.347758+00:00 app[web.1]: /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
2020-04-01T23:14:58.347824+00:00 app[web.1]: ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
2020-04-01T23:14:58.347891+00:00 app[web.1]: \\/ ___)| |_)| | | | | || (_| | ) ) ) )
2020-04-01T23:14:58.347959+00:00 app[web.1]: ' |____| .__|_| |_|_| |_\__, | / / / /
2020-04-01T23:14:58.348042+00:00 app[web.1]: =========|_|==============|___/=/_/_/_/
2020-04-01T23:14:58.349377+00:00 app[web.1]: :: Spring Boot :: (v2.2.5.RELEASE)
2020-04-01T23:14:58.349417+00:00 app[web.1]:
2020-04-01T23:14:58.646256+00:00 app[web.1]: 2020-04-01 23:14:58.641 INFO 4 --- [ main] c.s.s.ServerHospitalApplication : Starting ServerHospitalApplication v0.0.1-SNAPSHOT on ee8bd841-dcb7-4af4-90f2-fb5330b4b247 with PID 4 (/app/target/server-hospital-0.0.1-SNAPSHOT.jar started by u45481 in /app)
2020-04-01T23:14:58.647797+00:00 app[web.1]: 2020-04-01 23:14:58.647 INFO 4 --- [ main] c.s.s.ServerHospitalApplication : No active profile set, falling back to default profiles: default
2020-04-01T23:14:59.704318+00:00 app[web.1]: 2020-04-01 23:14:59.702 INFO 4 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-04-01T23:14:59.796551+00:00 app[web.1]: 2020-04-01 23:14:59.796 INFO 4 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 79ms. Found 2 JPA repository interfaces.
2020-04-01T23:15:00.931272+00:00 app[web.1]: 2020-04-01 23:15:00.931 INFO 4 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-04-01T23:15:00.946566+00:00 app[web.1]: 2020-04-01 23:15:00.946 INFO 4 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-04-01T23:15:00.946955+00:00 app[web.1]: 2020-04-01 23:15:00.946 INFO 4 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.31]
2020-04-01T23:15:01.012734+00:00 app[web.1]: 2020-04-01 23:15:01.012 INFO 4 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-04-01T23:15:01.013067+00:00 app[web.1]: 2020-04-01 23:15:01.012 INFO 4 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2288 ms
2020-04-01T23:15:01.245799+00:00 app[web.1]: 2020-04-01 23:15:01.245 INFO 4 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-04-01T23:15:01.339150+00:00 app[web.1]: 2020-04-01 23:15:01.338 INFO 4 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.12.Final
2020-04-01T23:15:01.518879+00:00 app[web.1]: 2020-04-01 23:15:01.518 INFO 4 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-04-01T23:15:01.652931+00:00 app[web.1]: 2020-04-01 23:15:01.652 INFO 4 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-04-01T23:15:02.045903+00:00 app[web.1]: 2020-04-01 23:15:02.045 INFO 4 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-04-01T23:15:02.080020+00:00 app[web.1]: 2020-04-01 23:15:02.079 INFO 4 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL10Dialect
2020-04-01T23:15:04.111351+00:00 app[web.1]: 2020-04-01 23:15:04.111 INFO 4 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-04-01T23:15:04.121608+00:00 app[web.1]: 2020-04-01 23:15:04.121 INFO 4 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-04-01T23:15:04.702613+00:00 app[web.1]: 2020-04-01 23:15:04.702 WARN 4 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2020-04-01T23:15:04.947395+00:00 app[web.1]: 2020-04-01 23:15:04.947 INFO 4 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-04-01T23:15:05.444803+00:00 app[web.1]: 2020-04-01 23:15:05.444 INFO 4 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-04-01T23:15:05.448231+00:00 app[web.1]: 2020-04-01 23:15:05.448 INFO 4 --- [ main] c.s.s.ServerHospitalApplication : Started ServerHospitalApplication in 8.023 seconds (JVM running for 9.091)
2020-04-01T23:16:25.088442+00:00 heroku[web.1]: State changed from starting to crashed
2020-04-01T23:16:25.713713+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=fx-server.herokuapp.com request_id=16a54f69-760a-4fa1-9813-93f4c5846440 fwd="93.85.72.168" dyno= connect= service= status=503 bytes= protocol=https
2020-04-01T23:16:25.935733+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=fx-server.herokuapp.com request_id=e4b37c4b-a4bf-4411-803e-c9e15be13287 fwd="93.85.72.168" dyno= connect= service= status=503 bytes= protocol=https
So. According to the heroku policy, your app will be started at the random port, that currently is free for usage. Your Procfile should look like this (for spring boot)
web: java -jar target/jarname.jar --server.port=$PORT
You also can use this as application.properties property.
Thanks to Malax for help.