I am not experienced in spring micro services and zuul configuration so I will need some help.
I have a microservice running on jhipster-registry and I am trying to access the microservice from my application through the gateway.
In my application I have this service in the current routes:
If I am accessing the service when my application is started as a spring boot app everything works fine; but when I deploy my application on tomcat the same request returns 404.
Here is the zuul config :
zuul:
routes:
assessmentapi:
path: /assessmentapi/**
serviceId: assessmentapi
url: http://192.168.80.44:8081/assessment-api
and http get request
$http.get('/assessmentapi/main/....)
You should not write the URL part in your configuration. As we can see on your gateway screenshot, the gateway already knows the service's IP thanks to Eureka and the Registry. IP addresses should never go into the config as those are determined dynamically.
Related
I am trying to deploy a simple microservice application (Spring boot) in GAE. The application has 3 services -
1. Discovery Service
2. Spring Cloud Gateway
3. Customer service
I am trying to call an API through API gateway. This works fine in local machine but getting 404 in GAE hosted application.
The URL I am using is - https://Gateway-url/customer-service/version
And corresponding YAML config is :
spring:
cloud:
gateway:
routes:
-id: customer-service
uri: https://XXXXXX.customer-service.appspot.com/
predicates:
- Path=/customer-service/**
filters:
- StripPrefix=1
The URI configured in above code snippet is - target URL of GAE service.
So When I hit the https://Gateway-url/customer-service/version url in browser, I am getting 404 error but it works if I hit the direct url https://customer-service-url/version
When I changed the API Gateway configuration in the local environment, (change uri to cloud based service uri), the issue is reproducible. So I am thinking that Gateway is not able to route the requests to App Engine Service target URL.
How can I fix this problem?
I think the problem is the url that you are using in the configuration file to route your requests.
According to google cloud documentation, to call from one service to another you should use a endpoint like this
https://VERSION_ID-dot-SERVICE_ID-dot-PROJECT_ID.REGION_ID.r.appspot.com
As yo can see here
https://cloud.google.com/appengine/docs/standard/java/communicating-between-services
And it seems that the url that you are using doesn't fit int this.
Anyway I think that in a serverless environment such as app engine the best option to perform service discovery and to route requests via gateway is using the services provided by google. In case of service discovery it is done automatically and if you want a gateway you can use google cloud endpoints that have a greate integration with app engine. Because this is the gateway intended to use with these applications
I have recently installed a micro service infrastraucture based on Spring Boot + Spring Cloud.
My Spring Boot microservices register in my Eureka server and Zuul automaticaly redirects requests to them.
I have a Drupal content manager that exposes content through REST interface and I'd like it to take part in the discovery rave party. How can I have my drupal register it self in the Eureka server so Zuul redirects the corresponding calls to it?
As an ugly workaround I wonder if I can have automatic discovery and routing running in Zuul while manually configuring some REST paths to be redirected to the drupal server? (Using zuul.routes... property files)
I found that I can add manual zuul routes in bootstrap.yaml
I have tried adding it in the application yaml property files in configuration server but for some reason they are ignored when the Eureka discovery server is working.
Anyway, bootstrap.yaml works. Example:
zuul:
routes:
mta_api:
path: /mta_api/**
url: http://my-non-springboot-rest-service.com/
stripPrefix: false
You could add sidecar to your non-springboot application. This would allow Eureka support.
Source: Dead- http://cloud.spring.io/spring-cloud-static/Edgware.SR4/single/spring-cloud.html#_polyglot_support_with_sidecar
Current: https://cloud.spring.io/spring-cloud-static/Dalston.SR5/multi/multi__polyglot_support_with_sidecar.html
I'm using Eureka Server where every microservice gets registered as soon it gets online.
Now I want to use Zuul to create a gateway proxy.
Zuul works if I provide routes manually:
zuul.routes.ms1.url=http://localhost:8901
zuul.routes.ms2.url=http://localhost:8902
ribbon.eureka.enabled=false
I want Zuul to auto pick routes from Eureka as soon new micro-services is up and registered with Eureka.
I tired adding #EnableAutoDiscovery to Zuul Initalization class
and setting ribbon.eureka.enabled=true after removing routes but nothing worked.
If you give eureka.client.serviceUrl.defaultZone in your properties in zuul service, zuul will take all services which is registered to eureka server.
I have some web services registered at Spring Boot Eureka Server. Is there any way I can check the endpoints registered at Eureka Server, with respect to all the application?
e.g: Eureka server
Service1 means Request will be routed to service endpoint: localhost:9080/service1
Service2 means Request will be routed to service endpoint: localhost:9088/service2
Service3 means Request will be routed to service endpoint: localhost:9085/service3
You can check the Eureka dashboard at http://host-name:8761 (Change the port if you're using a different one).
Secondly, Eureka doesn't route any request. It is just a service registry and keeps the records of the Microservices and its instances. You need an API Gateway (ZUUL) or similar to do the routing along with client side load balancers (ribbon, etc.).
You can configure the zuul endpoints in the application.yml (or properties) file like below to access your service endpoints.
zuul:
ignoredServices: "*"
routes:
service1:
path: /service1/**
service2:
path: /service2/**
If you want to access the service1, then your endpoint will be something like http://localhost:8765/service1/{custom-path}
Note: 8765 is the default zuul port. Change it accordingly.
I am writing microservices with Spring Cloud.
I'm also using Zuul as the API Gateway which routes some URLs to destination services which are not registered into Eureka.
When a new route needed to be added to Zuul, we often edit the application.yml file and then restart the Zuul server.
I was wondering is there a way to add new route into Zuul without restarting the Zuul server?
I found this link useful but it only works for services registed in Erueka.