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Spring cloud - client does not fetch configuration from config file server using spring.config.import in Spring boot 2.5.6

I'm completely stucked with a problem with my config client not fetchig configuration from config file server. I am trying to do that with "new way" using spring.config.import but it looks like I am missing something.
I have my properties files stored in a private github repository. Here is my config file server:
application.properties:
spring.application.name=config-server
server.port=8888
spring.cloud.config.server.git.uri=https://github.com/Pavello/simple-microservices-app-config-files-repo
spring.cloud.config.server.git.username=//My username
spring.cloud.config.server.git.password=//Here I am using my private token
spring.cloud.config.server.git.default-label=master
management.endpoints.web.exposure.include=busrefresh
spring.rabbitmq.host=localhost
spring.rabbitmq.user=guest
spring.rabbitmq.password=guest
spring.rabbitmq.port=5672
pom.xml:
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-bus</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-monitor</artifactId>
<version>2.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-rabbit</artifactId>
<version>3.0.4.RELEASE</version>
</dependency>
My client application looks like this:
application.properties:
server.port=${PORT:0}
spring.application.name=user-service
eureka.client.serviceUrl.defaultZone=http://localhost:8010/eureka
eureka.instance.prefer-ip-address=true
eureka.instance.instance-id=${spring.application.name}:${spring.application.instance_id:${random.value}}
spring.h2.console.enabled=true
spring.h2.console.settings.web-allow-others=true
spring.config.import=optional:configserver:http://localhost:8888
management.endpoints.web.exposure.include=*
pom.xml dependecies:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-bus</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-monitor</artifactId>
<version>2.2.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-rabbit</artifactId>
<version>3.0.4.RELEASE</version>
</dependency>
After running my config file server I'm getting following response under /user-service/default:
{
"name": "user-service",
"profiles": [
"default"
],
"label": null,
"version": "889d16cb37b5467ed4546d617fc5ba8280c96f2d",
"state": null,
"propertySources": [
{
"name": "https://github.com/Pavello/simple-microservices-app-config-files-repo/file:C:\\Users\\PAWEL~1.KAN\\AppData\\Local\\Temp\\config-repo-15000982762999853489\\user-service.properties",
"source": {
"login.url.path": "/users/login",
"jwt.expiration": "864002324",
"jwt.key": "passwordpasswordpasswordblabla",
"logging.level.org.springframework.web.filter.CommonsRequestLoggingFilter": "DEBUG",
"spring.datasource.url": "jdbc:postgresql://127.0.0.1:5432/postgres",
"spring.datasource.driver-class-name": "org.postgresql.Driver",
"spring.datasource.jdbc-url": "jdbc:postgresql://127.0.0.1:5432/postgres",
"spring.datasource.username": "postgres",
"spring.datasource.password": "postgres",
"spring.datasource.initialization-mode": "always"
}
},
{
"name": "https://github.com/Pavello/simple-microservices-app-config-files-repo/file:C:\\Users\\PAWEL~1.KAN\\AppData\\Local\\Temp\\config-repo-15000982762999853489\\application.properties",
"source": {
"login.url.path": "/users/login",
"jwt.expiration": "864002324",
"jwt.key": "passwordpasswordpasswordblabla",
"logging.level.org.springframework.web.filter.CommonsRequestLoggingFilter": "DEBUG",
"spring.datasource.url": "jdbc:postgresql://127.0.0.1:5432/postgres",
"spring.datasource.driver-class-name": "org.postgresql.Driver",
"spring.datasource.jdbc-url": "jdbc:postgresql://127.0.0.1:5432/postgres",
"spring.datasource.username": "postgres",
"spring.datasource.password": "postgres",
"spring.datasource.initialization-mode": "always"
}
}
]
}
So it looks like it's fetching configuration properly but on the client side I don't these values and I'm getting this error:
java.lang.IllegalStateException: Unable to load config data from 'optional:configserver:http://localhost:8888'
at org.springframework.boot.context.config.StandardConfigDataLocationResolver.getReferences(StandardConfigDataLocationResolver.java:141)
at org.springframework.boot.context.config.StandardConfigDataLocationResolver.getReferences(StandardConfigDataLocationResolver.java:126)
at org.springframework.boot.context.config.StandardConfigDataLocationResolver.resolve(StandardConfigDataLocationResolver.java:119)
at org.springframework.boot.context.config.ConfigDataLocationResolvers.lambda$resolve$1(ConfigDataLocationResolvers.java:115)
at org.springframework.boot.context.config.ConfigDataLocationResolvers.resolve(ConfigDataLocationResolvers.java:126)
at org.springframework.boot.context.config.ConfigDataLocationResolvers.resolve(ConfigDataLocationResolvers.java:115)
at org.springframework.boot.context.config.ConfigDataLocationResolvers.resolve(ConfigDataLocationResolvers.java:107)
at org.springframework.boot.context.config.ConfigDataImporter.resolve(ConfigDataImporter.java:105)
at org.springframework.boot.context.config.ConfigDataImporter.resolve(ConfigDataImporter.java:97)
at org.springframework.boot.context.config.ConfigDataImporter.resolveAndLoad(ConfigDataImporter.java:85)
at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.withProcessedImports(ConfigDataEnvironmentContributors.java:121)
at org.springframework.boot.context.config.ConfigDataEnvironment.processInitial(ConfigDataEnvironment.java:240)
at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:227)
at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:102)
at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:94)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:102)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:87)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:374)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:332)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332)
at io.github.pavello.userservice.UserServiceApplication.main(UserServiceApplication.java:13)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.lang.IllegalStateException: File extension is not known to any PropertySourceLoader. If the location is meant to reference a directory, it must end in '/' or File.separator
at org.springframework.boot.context.config.StandardConfigDataLocationResolver.getReferencesForFile(StandardConfigDataLocationResolver.java:229)
at org.springframework.boot.context.config.StandardConfigDataLocationResolver.getReferences(StandardConfigDataLocationResolver.java:138)
... 36 common frames omitted
I've read a couple of similar issues related to mismatch of spring boot and spring cloud version but I suppose I'm using the newest (at the moment) version of both spring boot (2.5.6) and spring cloud (2020.0.4). I've tried to add spring cloud bootstrap dependency (although I think it's not necessary) to my user service (like some other issues suggested):
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
<version>3.0.4</version>
</dependency>
but it didn't help either. Can anyone help please ?

NoSuchFieldError: DEFAULT_INCOMPATIBLE_IMPROVEMENTS

While trying out Netflix hystrix on Spring boot 2.3.3 gives the following error -
...
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'freeMarkerConfigurer' defined in org.springframework.cloud.netflix.hystrix.dashboard.HystrixDashboardConfiguration: Invocation of init method failed; nested exception is java.lang.NoSuchFieldError: DEFAULT_INCOMPATIBLE_IMPROVEMENTS
Main SimpleClientApplication.java has following annotation
#SpringBootApplication
#EnableCircuitBreaker
#EnableHystrixDashboard
ProductListController.java
...
#RestController
#EnableAutoConfiguration(exclude = { FreeMarkerAutoConfiguration.class })
public class ProductListController {
#GetMapping
#HystrixCommand(fallbackMethod = "defaultProducts")
public List<String> cloudProductList() {
RestTemplate restTemplate = new RestTemplate();
URI uri = URI.create("http://localhost:8090/products");
return restTemplate.getForObject(uri, List.class);
}
public List<String> defaultProducts() {
return Arrays.asList("Spring Cloud");
}
}
pom.xml
...
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.3.3.RELEASE
com.demo
simple-client-application
1.0
simple-client-application
Demo project for Spring Boot
<properties>
<java.version>14</java.version>
<spring-cloud.version>Hoxton.SR8</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
</dependency>
<dependency>
<groupId>freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.9</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-netflix-hystrix</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.9</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>2.3.3.RELEASE</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

I tried many solutions:
Adjusted maven pom with freemarker exclusions and adding explicitly spring-context-support.
Added spring.freemarker.check-template-location: false
Added spring.freemarker.enabled: false
and none of these combinations were working for me, at every start of my Spring-Boot App I got the same error you mentioned.
Finally I found that just re-defining the suffix with:
spring
freemarker:
suffix: .ftl
and setting up:
#EnableAutoConfiguration(exclude = {FreeMarkerAutoConfiguration.class})
in my AppConfig class (the Class which contains the #Configuration annotation), my App is starting after that change.
I have to mention that I use Freemarker without template stored in my App but just using it as a runtime dependency (my Freemarker templates are just texts (Java String) passed in my Class Methods), then I don't really care about the file extensions. I do not want to use the Freemarker auto-configure and I just added the dependency explicitly:
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>${freemarker.version}</version>
</dependency>

No bean named 'transactionManager' available in SpringBoot JPA Configuration

According to baeldung here
If we're using a Spring Boot project, and have a spring-data-* or spring-tx >dependencies on the classpath, then transaction management will be enabled by >default."
However, i have this error:
org.springframework.messaging.MessageHandlingException: error occurred during processing message in 'MethodInvokingMessageProcessor' [org.springframework.integration.handler.MethodInvokingMessageProcessor#788f2bfc]; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'transactionManager' available: No matching TransactionManager bean found for qualifier 'transactionManager' - neither qualifier match nor bean name match!
with these Dependencies:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-artemis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
</dependency>
<dependency>
<groupId>com.indra.icens</groupId>
<artifactId>ic-license</artifactId>
</dependency>
<dependency>
<groupId>javax.jms</groupId>
<artifactId>javax.jms-api</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-jms</artifactId>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>mq</artifactId>
</dependency>
<dependency>
<groupId>com.ibm.mq</groupId>
<artifactId>mqjms</artifactId>
</dependency>
<dependency>
<groupId>javax.resource</groupId>
<artifactId>connector</artifactId>
</dependency>
<dependency>
<groupId>com.indra.icens.srom</groupId>
<artifactId>ic_int_srom_common</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
</dependency>
</dependencies>
application.properties:
spring.datasource.url=jdbc:postgresql://xxx/yyy
spring.datasource.username=asdasd
spring.datasource.password=werwer
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQL95Dialect
spring.jpa.hibernate.ddl-auto=none
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false
spring.jpa.show-sql=false
ServiceConfig.java
#EnableJms
#Configuration
#ImportResource({
"classpath:/META-INF/spring/integration/main-config.xml"
})
#EnableJpaRepositories("com.nbi.conn.repository")
#EntityScan("com.nbi.conn.entities")
public class ServiceConfig {
}
what is wrong ?, what am i missing in my SpringBoot Config?
Thanks in advance for your help

Did you try to add a bean "transactionManager" in your config like this
#Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory emf) {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}

Eureka server does not register service application

I'm starting both applications but eureka server isn't registering service application. I'm using Spring boot 2.1.4.RELEASE version. Ther is my dependencies in service application:
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
And application.yml file:
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
spring:
application:
name: test1
server:
port: 2222
Eureka server application dependencies:
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
All names and urls are correct and I have no idea why it isn't working. Could anyone help me with my problem ?

Yes, the previous dependency name you have used was only supported till 1.4.6 (Edgware release train). In the future, the easiest way to generate Spring Boot app poms in order to ensure the dependency versions are in keeping, is to do it at https://start.spring.io/ .

The problem has gone when i have changed previous dependencies for this one:
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>

Prometheus metrics - not found

I have spring boot application and i am using vertx.
I want to monitor the services and the jvm and for that i chose Prometheus.
This is my MonitoringConfig class:
#Configuration
public class MonitoringConfig {
#Bean
SpringBootMetricsCollector springBootMetricsCollector(Collection<PublicMetrics> publicMetrics) {
SpringBootMetricsCollector springBootMetricsCollector = new SpringBootMetricsCollector(publicMetrics);
springBootMetricsCollector.register();
return springBootMetricsCollector;
}
#Bean
public ServletRegistrationBean servletRegistrationBean() {
DefaultExports.initialize();
return new ServletRegistrationBean(new MetricsServlet(), "/prometheus");
}
}
And this are my dependencies:
<dependency>
<groupId>com.moelholm</groupId>
<artifactId>prometheus-spring-boot-starter</artifactId>
<version>1.0.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient</artifactId>
<version>0.0.25</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_hotspot -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_hotspot</artifactId>
<version>0.0.25</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_spring_boot -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_spring_boot</artifactId>
<version>0.0.25</version>
</dependency>
<!-- https://mvnrepository.com/artifact/io.prometheus/simpleclient_servlet -->
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_servlet</artifactId>
<version>0.0.25</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.hateoas</groupId>
<artifactId>spring-hateoas</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
It shows no error in the app, but when i am trying to access http://localhost:8787/prometheus i am getting Not Found.
Also i have tried only with actuator and it still the same.
http://localhost:8787/actuator, http://localhost:8787/health and etc. Allways getting: Not found.
So my question is what can cause this and how can i fix this problem?

I think that some of the dependencies is causing the problem. Try removing one by one and you can notice where is the problem.
Also for monitoring vert.x application here is a good example that can be useful for you.
About the jvm metrics, add this in your start:
DefaultExports.initialize();
new DropwizardExports(SharedMetricRegistries.getOrCreate("vertx")).register();