I've created a new spring boot project with "spring-cloud-starter-netflix-eureka-server" dependency. Also have added "#EnableEurekaServer" annotation and launched the spring boot app.
I see the below log messages
o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
c.n.eureka.cluster.PeerEurekaNodes : Adding new peer nodes [http://localhost:8761/eureka/]
From above, as I understand. Tomcat is running on port 8080 and eureka server is running on port 8761.
If so,
How come the Eureka Dash board is accessible at http://localhost:8080/ ? When the eureka server is running on port 8761 ?
On one of the client, I configured the following in the .properties file
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/
Above, I specified the Eureka server location. But, why is the client unable to register?
Thanks!
By default it works on 8761, so configure server.port=8761
Related
I am using Windows command to run my spring-boot application with emblemed tomcat. Beside, I need to run many console application using CommandlineRunner. Off cource I am facing port in use issue.
***************************
APPLICATION FAILED TO START
***************************
Description:
Web server failed to start. Port 8080 was already in use.
Action:
Identify and stop the process that's listening on port 8080 or configure this application to listen on another port.
I can set port in every console application but I need to run at least 10 console application at the same time.
Do I have any config or solution for application auto-change port?
You can auto generate port number to get rid from Port was already in use. just put server.port= 0 in properties or yml. It is auto generate server port in console.
application.properties
server.port= 0
application.yml
server:
port : 0
console
The config server is up and the client is able to fetch the properties from config server.
HTTP GET http://localhost:8888/account-service/dev/config
Accept=[application/json, application/*+json]
Response 200 OK
But the problem is, client service is trying to start on config server port 8888. I have set server.port=8080 in the client but still not working.
***************************
APPLICATION FAILED TO START
***************************
Description:
Web server failed to start. Port 8888 was already in use.
Am I missing any configuration here? Highly appreciate any help.
Config server application.properties,
spring.application.name=config-server
spring.cloud.config.profiles=dev
spring.cloud.config.server.git.uri=REPO_URL
server.port=8888
Finally, I was able to find the solution. When I was trying to start client service, server.port was also getting overridden with config server port. I added server.port=8080 in the properties file for the client service profile in config repo (account-service.properties) and it worked.
Eureka-server(MediaStoreEurekaServer): bootstrap.properties
spring.application.name=MediaStoreEurekaServer
server.port=9091
eureka.client.serviceUrl.defaultZone=http://localhost:9091/eureka}
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
Eureka-client(Config-Server): bootstrap.properties
spring.application.name=Config-Server
server.port=9093
user.home=${HOME}
spring.cloud.config.server.native.search-locations=file://${user.home}/IdeaProjects/MediaStore/centralProperties
spring.profiles.active=native
eureka.client.serviceUrl.defaultZone=http://localhost:9091/eureka
With above 2 properties (services running on same machine), Config-Server is able to register with MediaStoreEurekaServer eureka registry server when using http://localhost:9091/eureka.
I don't want to use localhost. When I use http://MediaStoreEurekaServer:9091/eureka , Config-Server is not able to register.
Can we use something other than localhost for eureka client to find the eureka server like service or instance name? when services are running on same host
Edit 1:
This is what eureka client spring logs give when in eureka client properties file i set
eureka.client.serviceUrl.defaultZone=http://MediaStoreEurekaServer:9091/eureka
Error:
2020-05-22 20:01:02.137 ERROR 22846 --- [nfoReplicator-0] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error. endpoint=DefaultEndpoint{ serviceUrl='http://MediaStoreEurekaServer:9091/eureka/}
com.sun.jersey.api.client.ClientHandlerException: java.net.UnknownHostException: MediaStoreEurekaServer```
I am using Spring Boot 1.5.9.RELEASE and it starts on two ports by default.
Tomcat initialized with port(s): 8080 (http) 8090 (http)
Tomcat started on port(s): 8080 (http) 8090 (http)
I have tried setting different port using server.port but that overrides only first port 8080 to a different one and 8090 remains. Also tried to change actuator port with management.port to a different one.
I see spring Boot 2.x doesn't have this issue. Any reason why spring boot 1.x runs on two ports by default and how to run on single port?
application.properties
server.context-path=/test-app
endpoints.actuator.enabled=true
management.security.enabled=false
management.health.defaults.enabled=true
management.health.mail.enabled=false
management.port=8981
Actually, it is not a problem, but a strange thing I would like to understand. I use SpringBoot2 with embedded Tomcat. And I've added self-signed SSL certificate. This is pretty usual config:
server.ssl.key-store-type=PKCS12
server.ssl.key-store=classpath:keystore.p12
server.ssl.key-store-password=123456
server.ssl.key-alias=tomcat
server.port=8443
And I made a connector, to force http -> https redirect, like in many examples:
private Connector getHttpConnector() {
Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
connector.setScheme("http");
connector.setPort(8080);
connector.setSecure(false);
connector.setRedirectPort(8443);
return connector;
}
If I would not specify server.port property in my config, I will see the following error:
Description:
The Tomcat connector configured to listen on port 8080 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 8080, or configure this application to listen
on another port.
But if I will, I will see following:
o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s):
8443 (https) 8080 (http) with context path ''
Why server.port starts to point at https port??? Even sources of springframework.boot.autoconfigure.web.ServerProperties says that it is
/**
* Server HTTP port.
*/
Is it ok, or I've got something strange in my server? Or this is how Conectors works? :) Thank you
By default, the embedded server start on port 8080 if you don't give any value for server.port in the properties file
And you are also specifying connectors port as 8080 (connector.setPort(8080);)
Hence you are getting port conflicts.