I am trying to run Eureka Server to get the Eureka System Status page.
I am getting Whitelabel Error Page error when I run my project.
Here is my applications.yml file
# This default profile is used when running a single instance completely standalone:
spring:
profiles: default
server:
port: 9000
eureka:
instance:
hostname: my-eureka-server.com
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
I want to be able to view my Eureka Status page instead of the error.
NOTE: Source of tutorial is this Eureka Server
make sure you have this in your application.yml:
spring:
freemarker:
template-loader-path: classpath:/templates/
prefer-file-system-access: false
see here: https://cloud.spring.io/spring-cloud-static/spring-cloud-netflix/2.1.0.RELEASE/multi/multi_spring-cloud-eureka-server.html#netflix-eureka-server-starter
Related
Thanks for taking the time to read my post.
My issue is as such. I have 2 microservices (auth-service and image-service) deployed on Heroku, as well as a server Eureka and a gateway Zuul.
In local, all of this works.
However, when deployed, the same calls give me 404 errors : for example :
zuul is deployed on port 8762 in local,
so http://localhost:8762/images/user/create works, it points to http://localhost:8200/user/create of the image-service.
Deployed, https://croquis-time-image.herokuapp.com/user/create works, but https://croquis-time-zuul.herokuapp.com/images/user/create throws a 404 error.
On eureka however, all my services are registered, so the trouble doesn't come from there. I thought perhaps zuul didn't manage to get all the services from Eureka, but I'm not sure how to check.
More information :
application.yml of zuul deployed :
server:
port: 8762
eureka:
client:
serviceUrl:
defaultZone: https://croquis-time-eureka.herokuapp.com/eureka/
instance:
hostName: croquis-time-eureka.herokuapp.com
zuul:
#Service will be mapped under the /api URI
prefix: /api
# Uncomment to disable auto-registering all services read from Eureka
# ignoredServices: '*'
routes:
image-service:
path: /images/**
serviceId: image-service
auth-service:
path: /auth/**
serviceId: auth-service
stripPrefix: false
sensitiveHeaders: Cookie,Set-Cookie
spring:
application:
name: zuul-server
security:
jwt:
uri: /auth/**
prefix: Bearer
expiration: 86400
header: Authorization
secret: *****************
The application.yml of eureka deployed
server:
port: 8761
eureka:
instance:
hostname: croquis-time-eureka.herokuapp.com
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: https://croquis-time-eureka.herokuapp.com/eureka/
spring:
application:
name: eureka-server
The image service I'm trying to call :
server:
port: 8200
eureka:
client:
serviceUrl:
defaultZone: https://croquis-time-eureka.herokuapp.com/eureka/
instance:
hostName: croquis-time-eureka.herokuapp.com
spring:
application:
name: image-service
jpa:
showSql: true
hibernate:
ddlAuto: update
datasource:
url: jdbc:mysql://***********:3306/croquis-time
username: ******************
password: ****************
I have tried removing and adding the "ignored-services" from zuul to see if that was the problem, but it didn't change anything.
I'm very willing to edit my question with more information if you require more, I'm not sure where is the origin of the problem, so I'm a bit at a loss as to what to add.
Thanks !
you have an issue with the configuration of .yml in zuul server
Your .yml of zuul server must be:
instance:
hostName: croquis-time-zuul.herokuapp.com
And your .yml of image must be:
instance:
hostName: croquis-time-image.herokuapp.com
because instance.hostname is the host of your application acting as the eureka client. if you need more information please visit: https://blog.heroku.com/managing_your_microservices_on_heroku_with_netflix_s_eureka
I am trying to run an example with zuul and Eureka server.
Below are my configurations:
eureka-service
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
logging.level.com.netflix.eureka=OFF
logging.level.com.netflix.discovery=OFF
eureka -client (bootstrap.properties):
spring.application.name=ab
management.server.port=9001
management.server.address: 127.0.0.1
server.port=8081
edge-service(zuul) :
zuul.routes.ab.url=http://localhost:8081
ribbon.eureka.enabled=false
spring.application.name=API-Gateway
eureka.client.eureka-server-port=8761
server.port=8080
While I am hitting the URL http:localhost:8080/clientapi, I get a white label error page, what configuration seems to be missing, as I could see edge-service, as well as eureka-client, registered correctly with the eureka -server.
I am using spring boot: 2.1.4.
Let me show you my example:
eureka in application.yml file:
server:
port: 8761
eureka:
client:
register-with-eureka: false
fetch-registry: true
instance-info-replication-interval-seconds: 10
server:
eviction-interval-timer-in-ms: 50000
wait-time-in-ms-when-sync-empty: 5
zuul:
zuul.routes.1.url=http://localhost:8081
zuul.routes.2.url=http://localhost:8082
zuul.prefix=/client
zuul.host.max-per-route-connections=10
zuul.host.max-total-connections=10
I have 2 services (1 - localhost:8081 and 2 - localhost:8082)
You need annotate main class Zuul:
#EnableZuulProxy
#EnableDiscoveryClient
Then start application. When you go to
localhost/8070/client/1
you will redirect to first service (localhost:8081)
When you go to
localhost/8070/client/2
I hope it will help you.
you will redirect to second service (localhost:8082)
I have a couple of microservices on Heroku - eureka-server, Zuul server and some app services.
While I am trying to reach any of my services, for example, "service1" via Zuul gateway, Zuul is unable to forward the request to the respective service (when I'm trying to run them locally everything works fine).
I've found the following errors in Zuul logs:
com.netflix.zuul.exception.ZuulException: Forwarding error
Caused by: com.netflix.client.ClientException: Load balancer does not have the available server for the client: service1
Below are configurations of my services:
1) "zuul server" application.yml
server:
port: ${PORT:8000}
zuul:
prefix: /api
ignoredServices: '*'
routes:
service1:
path: /path_for_service1/**
serviceId: service1
strip-prefix: false
...
management:
endpoints:
web:
exposure:
include: "*"
eureka:
client:
serviceUrl:
defaultZone: ${EUREKA_URL:http://localhost:5000}/eureka/
2) "eureka server" application.yml
server:
port: ${PORT:5000}
eureka:
instance:
hostname: localhost
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
3.1) "service1" application.yml
server.port=${PORT:8081}
eureka.client.service-url.defaultZone=${EUREKA_URL:http://localhost:5000}/eureka/
3.2) "service1" bootstrap.yml
spring:
application:
name: service1
All microservices are visible in eureka dashboard.
If I change zuul routes to hard-coded url it works well but it is not what I'm looking for.
zuul:
prefix: /api
ignoredServices: '*'
routes:
service1:
path: /path_for_service1/**
url: http://url_of_service_1
strip-prefix: false
Could you please help me with this issue?
Finally, I've found root cause :)
All services are registered in eureka using heroku hostname by default (like "085930c7-b893-4b34-88a7-6e37fbe7fa0f") which is not accessible outside.
But services are accessible by domain names.
So I just added domain name settings to application.properties of each service (https://blog.heroku.com/managing_your_microservices_on_heroku_with_netflix_s_eureka)
eureka:
instance:
non-secure-port: 80
hostname: ${DOMAIN_NAME}
and now it works.
I am using JHipster.
I have 3 different Apps.
JHipster Registry instance
JHipster Gateway instance
JHipster Microservice instance
Whenever I change the following I get a 401 during startup of the Gateway and Microservice instances.
Change the Eureka client config:
eureka:
instance:
prefer-ip-address: true
client:
enabled: true
healthcheck:
enabled: true
registerWithEureka: true
fetchRegistry: true
serviceUrl:
defaultZone: http://admin:admin#localhost:8761/eureka/
Change the Eureka Server Config
security:
user:
name: admin
password: <better password>
role: USER,ADMIN
changing admin:admin to admin:
Does anyone know what I am doing wrong?
the JHipster Registry is a Spring Cloud Server as well. So when you change your password, you should also apply
spring:
cloud:
config:
uri: http://admin:betterpass#localhost:8761/config
in your bootstrap-dev.yml (or bootstrap-prod, if you run this in production or in docker) of your client application, or by passing it via environment vars like
SPRING_CLOUD_CONFIG_URI=...
I have Eureka setup with my spring boot application, and Eureka has a neat web UI built in which I like
Here's my config in application.yml
server:
port: 8081
management:
context_path: /admin
## EUREKA CONFIG ##
eureka:
instance:
hostname: localhost
metadataMap:
instanceId: ${spring.application.name}:${spring.application.instance_id:${random.value}}
client:
registerWithEureka: true
fetchRegistry: true
server:
waitTimeInMsWhenSyncEmpty: 0
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
However, the web UI shows up on my eureka server at
http://localhost:8081/
is there a way to change the url of the web ui only to something like
http://localhost:8081/eurekawebui
Thanks
You can set eureka.dashboard.path=/eurekawebui. It defaults to /.