In zuul 2.x sample demo, a request routing to nginx-backend http service always got 404 error

[whbg]

Condition:
1.disable eureka, and then
2.choose ConfigurationBasedServerList

We found this error was relation to 'Host' header forward to real service. Or i did incorrect configuration(see below bold line)?

[whbg]

#Instance env settings

region=us-east-1
environment=test

#Eureka instance registration for this app

#Name of the application to be identified by other services
eureka.name=zuul

#The port where the service will be running and serving requests
eureka.port=7001

#Virtual host name by which the clients identifies this service
eureka.vipAddress=${eureka.name}:${eureka.port}

#For eureka clients running in eureka server, it needs to connect to servers in other zones
eureka.preferSameZone=false

#Don't register locally running instances.
eureka.registration.enabled=false

#Disable eureka
eureka.validateInstanceId=false

#Loading Filters
zuul.filters.root=zuul-sample/src/main/groovy/com/netflix/zuul/sample/filters
zuul.filters.locations=${zuul.filters.root}/inbound,${zuul.filters.root}/outbound,${zuul.filters.root}/endpoint
zuul.filters.packages=com.netflix.zuul.filters.common

#Load balancing backends with Eureka

eureka.shouldUseDns=true
eureka.eurekaServer.context=discovery/v2
eureka.eurekaServer.domainName=discovery${environment}.netflix.net
eureka.eurekaServer.gzipContent=true

eureka.serviceUrl.default=http://${region}.${eureka.eurekaServer.domainName}:7001/${eureka.eurekaServer.context}

#api.ribbon.NIWSServerListClassName=com.netflix.niws.loadbalancer.DiscoveryEnabledNIWSServerList
#api.ribbon.DeploymentContextBasedVipAddresses=api-test.netflix.net:7001

#Load balancing backends without Eureka
#disable auto service discovery
eureka.shouldFetchRegistry=false

api.ribbon.listOfServers=http://xx.com:80 ##{nginx-backend hostname}

api.ribbon.UseIPAddrForServer=false
api.ribbon.client.NIWSServerListClassName=com.netflix.loadbalancer.ConfigurationBasedServerList ##{diff}
api.ribbon.DeploymentContextBasedVipAddresses=api-test.netflix.net:7001

[artgon]

Which host header are you getting on your backend?

[whbg]

configuration is , api.ribbon.listOfServers=http://xx.com:80 backend Host header is Host:localhost:7001(it should be Host:xx.com:80)

[artgon]

That's not how proxies are supposed to behave. You have to maintain the host header from the original request otherwise your service has no idea where the request came from.

[liangGTY]

I think it's better if the proxy overrides the host header to get the host from ribbon.listOfServers? @artgon

[wongcoekfai]

And so? how to fix this problem?

[SMakhrov]

I have the same problem. @artgon please help to solve this.

[artgon]

If you want to change the outbound host header, you can add a filter that modifies the inbound request headers.

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