i’ve tried a lot of things, this is my first project on vaadin and Spring in general.

I’ve bought an Ubuntu VPS to host a personal webserver, it is already working with HTTP but i would like to swap to HTTPS. Can someone explain to me what should i do? I’ve tried a lot of tutorials.

What i’ve tried
On linux side: use keytool to generate a .p12 file and then moving it to the src/main/resources/keystore Java project file.

and add this to applications.properties

server.ssl.key-store= classpath:keystore/keystore.p12
server.ssl.key-store-type= PKCS12
server.ssl.key-store-password= XXXX
server.ssl.key-alias= XXXXX

But when i start the server it logs:

2024-04-29T19:24:45.541Z  INFO 1296388 --- [           main] com.example.application.Application      : Starting Application v1.0-SNAPSHOT using Java 21.0.2 with PID 1296388 (/root/smilefest/webcagorate-1.0-SNAPSHOT.jar started by root in /root/smilefest)
2024-04-29T19:24:45.556Z  INFO 1296388 --- [           main] com.example.application.Application      : No active profile set, falling back to 1 default profile: "default"
2024-04-29T19:24:47.110Z  INFO 1296388 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2024-04-29T19:24:47.223Z  INFO 1296388 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 101 ms. Found 2 JPA repository interfaces.
2024-04-29T19:24:48.371Z  INFO 1296388 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port 443 (https)
2024-04-29T19:24:48.397Z  INFO 1296388 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2024-04-29T19:24:48.398Z  INFO 1296388 --- [           main] o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/10.1.19]
2024-04-29T19:24:48.439Z  INFO 1296388 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2024-04-29T19:24:48.441Z  INFO 1296388 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2718 ms
Standard Commons Logging discovery in action with spring-jcl: please remove commons-logging.jar from classpath in order to avoid potential conflicts
2024-04-29T19:24:48.964Z  INFO 1296388 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2024-04-29T19:24:49.050Z  INFO 1296388 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 6.4.4.Final
2024-04-29T19:24:49.093Z  INFO 1296388 --- [           main] o.h.c.internal.RegionFactoryInitiator    : HHH000026: Second-level cache disabled
2024-04-29T19:24:49.381Z  INFO 1296388 --- [           main] o.s.o.j.p.SpringPersistenceUnitInfo      : No LoadTimeWeaver setup: ignoring JPA class transformer
2024-04-29T19:24:49.413Z  INFO 1296388 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2024-04-29T19:24:49.825Z  INFO 1296388 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection com.mysql.cj.jdbc.ConnectionImpl@b841713
2024-04-29T19:24:49.827Z  INFO 1296388 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2024-04-29T19:24:51.387Z  INFO 1296388 --- [           main] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000489: No JTA platform available (set 'hibernate.transaction.jta.platform' to enable JTA platform integration)
2024-04-29T19:24:51.495Z  INFO 1296388 --- [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2024-04-29T19:24:51.990Z  WARN 1296388 --- [           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
2024-04-29T19:24:52.273Z  INFO 1296388 --- [           main] o.s.s.web.DefaultSecurityFilterChain     : Will secure any request with [org.springframework.security.web.session.DisableEncodeUrlFilter@27563444, org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@507e3e77, org.springframework.security.web.context.SecurityContextHolderFilter@55b7f9f1, org.springframework.security.web.header.HeaderWriterFilter@292b7a02, org.springframework.web.filter.CorsFilter@73796ae5, org.springframework.security.web.csrf.CsrfFilter@569026df, org.springframework.security.web.authentication.logout.LogoutFilter@55da6bf, org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter@3aebdb4, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@380cd266, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@4b477121, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@3956e933, org.springframework.security.web.access.ExceptionTranslationFilter@5a183fa6, org.springframework.security.web.access.intercept.AuthorizationFilter@671561b9]
2024-04-29T19:24:53.062Z  INFO 1296388 --- [           main] o.a.t.util.net.NioEndpoint.certificate   : Connector [https-jsse-nio-443], TLS virtual host [_default_], certificate type [UNDEFINED] configured from keystore [/root/.keystore] using alias [tomcat] with trust store [null]
2024-04-29T19:24:53.091Z  INFO 1296388 --- [           main] c.v.f.s.DefaultDeploymentConfiguration   : Vaadin is running in production mode.
2024-04-29T19:24:53.139Z  INFO 1296388 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port 443 (https) with context path ''
2024-04-29T19:24:53.159Z  INFO 1296388 --- [           main] com.example.application.Application      : Started Application in 8.355 seconds (process running for 9.159)