kubernetes - 大使外部身份验证设置返回404

Question

我正在使用大使作为API网关，并试图使外部身份验证正常工作。我已经部署了具有相应大使注释的auth-service

...
metadata:
  name: auth-service-svc
  annotations:
    getambassador.io/config: |
      ---
      apiVersion: ambassador/v1
      kind:  AuthService
      name:  authentication
      proto: http
      path_prefix: "/api"
      auth_service:  auth-service-svc:8080    
spec:
  ports:
    - port: 8080
      targetPort: 8080
      name: http
  selector:
    app: auth-service
  type: ClusterIP

当我执行 curl来针对 http://[hostname]/api发起Get请求时，我希望可以调用auth-service。但是，这似乎没有发生。当我查看大使日志时，会看到以下消息:

[2019-04-12 15:10:42.977][75][debug][main] [source/server/connection_handler_impl.cc:257] [C20117] new connection
[2019-04-12 15:10:42.977][75][debug][http] [source/common/http/conn_manager_impl.cc:243] [C20117] new stream
[2019-04-12 15:10:42.977][75][debug][http] [source/common/http/conn_manager_impl.cc:580] [C20117][S12856858676043764009] request headers complete (end_stream=true):
':authority', '<some-prefix>.elb.amazonaws.com'
':path', '/api/'
':method', 'GET'
'user-agent', 'curl/7.61.0'
'accept', '*/*'

[2019-04-12 15:10:42.977][75][debug][http] [source/common/http/conn_manager_impl.cc:1037] [C20117][S12856858676043764009] request end stream
[2019-04-12 15:10:42.977][75][debug][router] [source/common/router/router.cc:277] [C20117][S12856858676043764009] no cluster match for URL '/api/'
[2019-04-12 15:10:42.977][75][debug][http] [source/common/http/conn_manager_impl.cc:1278] [C20117][S12856858676043764009] encoding headers via codec (end_stream=true):
':status', '404'
'date', 'Fri, 12 Apr 2019 15:10:42 GMT'
'server', 'envoy'

[2019-04-12 15:10:43.013][75][debug][connection] [source/common/network/connection_impl.cc:502] [C20117] remote close
[2019-04-12 15:10:43.013][75][debug][connection] [source/common/network/connection_impl.cc:183] [C20117] closing socket: 0

这是删除并重新创建身份验证服务时的日志(被截断)。我试图显示捕获特使配置更新的日志。

...
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: copying configuration from http://localhost:34525/api/snapshot/40 to /ambassador/snapshots/snapshot-tmp.yaml
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: Load balancer for tcp://auth-service-svc:8080 is None
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: Load balancer for tcp://127.0.0.1:8877 is None
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: Load balancer for tcp://127.0.0.1:8877 is None
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: Load balancer for tcp://127.0.0.1:8877 is None
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: extauth: server_uri http://api
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: listen_ports ['80']
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: -global-: NOTICE: Ambassador 0.60 will default to listening on port 8080 for HTTP. You will need to change your configuration to continue using port 80.
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: successfully validated the resulting envoy configuration, continuing...
....

[2019-04-12 15:20:59.782][65][debug][config] [source/server/listener_manager_impl.cc:56]     name: envoy.http_connection_manager
[2019-04-12 15:20:59.783][65][debug][config] [source/server/listener_manager_impl.cc:59]   config: {"use_remote_address":true,"access_log":[{"config":{"path":"/dev/fd/1","format":"ACCESS [%START_TIME%] \"%REQ(:METHOD)% %REQ(X-ENVOY-ORIGINAL-PATH?:PATH)% %PROTOCOL%\" %RESPONSE_CODE% %RESPONSE_FLAGS% %BYTES_RECEIVED% %BYTES_SENT% %DURATION% %RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)% \"%REQ(X-FORWARDED-FOR)%\" \"%REQ(USER-AGENT)%\" \"%REQ(X-REQUEST-ID)%\" \"%REQ(:AUTHORITY)%\" \"%UPSTREAM_HOST%\"\n"},"name":"envoy.file_access_log"}],"xff_num_trusted_hops":0,"normalize_path":true,"route_config":{"virtual_hosts":[{"name":"backend","routes":[{"route":{"priority":null,"prefix_rewrite":"/ambassador/v0/check_ready","timeout":"10.000s","weighted_clusters":{"clusters":[{"name":"cluster_127_0_0_1_8877","weight":100}]}},"match":{"prefix":"/ambassador/v0/check_ready","case_sensitive":true}},{"match":{"case_sensitive":true,"prefix":"/ambassador/v0/check_alive"},"route":{"priority":null,"prefix_rewrite":"/ambassador/v0/check_alive","timeout":"10.000s","weighted_clusters":{"clusters":[{"name":"cluster_127_0_0_1_8877","weight":100}]}}},{"match":{"case_sensitive":true,"prefix":"/ambassador/v0/"},"route":{"priority":null,"weighted_clusters":{"clusters":[{"weight":100,"name":"cluster_127_0_0_1_8877"}]},"timeout":"10.000s","prefix_rewrite":"/ambassador/v0/"}},{"match":{"case_sensitive":true,"prefix":"/leads/"},"route":{"timeout":"3.000s","prefix_rewrite":"/","weighted_clusters":{"clusters":[{"weight":100,"name":"cluster_lead_service_svc"}]},"priority":null}}],"domains":["*"]}]},"http_filters":[{"config":{"http_service":{"server_uri":{"timeout":"5.000s","uri":"http://api","cluster":"cluster_extauth_auth_service_svc_8080"},"authorization_request":{"allowed_headers":{"patterns":[{"exact":"x-forwarded-proto"},{"exact":"cookie"},{"exact":"user-agent"},{"exact":"proxy-authorization"},{"exact":"from"},{"exact":"authorization"},{"exact":"x-forwarded-for"},{"exact":"x-forwarded-host"}]}},"path_prefix":"/api","authorization_response":{"allowed_client_headers":{"patterns":[{"exact":"authorization"},{"exact":"set-cookie"},{"exact":"location"},{"exact":"www-authenticate"},{"exact":"proxy-authenticate"}]},"allowed_upstream_headers":{"patterns":[{"exact":"authorization"},{"exact":"set-cookie"},{"exact":"location"},{"exact":"www-authenticate"},{"exact":"proxy-authenticate"}]}}}},"name":"envoy.ext_authz"},{"name":"envoy.cors"},{"name":"envoy.router"}],"stat_prefix":"ingress_http"}
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: configuration updated from snapshot 40
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: Scout reports {"latest_version": "0.53.1", "application": "ambassador", "cached": true, "timestamp": 1555081685.663466}
2019-04-12 15:20:59 diagd 0.53.1 [P43TAmbassadorEventWatcher] INFO: Scout notices: [{"level": "DEBUG", "message": "Returning cached result"}]
[2019-04-12 15:20:59.799][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:302]     http filter #0
[2019-04-12 15:20:59.799][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:303]       name: envoy.ext_authz
[2019-04-12 15:20:59.800][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:307]     config: {"http_service":{"authorization_response":{"allowed_upstream_headers":{"patterns":[{"exact":"authorization"},{"exact":"set-cookie"},{"exact":"location"},{"exact":"www-authenticate"},{"exact":"proxy-authenticate"}]},"allowed_client_headers":{"patterns":[{"exact":"authorization"},{"exact":"set-cookie"},{"exact":"location"},{"exact":"www-authenticate"},{"exact":"proxy-authenticate"}]}},"server_uri":{"timeout":"5.000s","uri":"http://api","cluster":"cluster_extauth_auth_service_svc_8080"},"authorization_request":{"allowed_headers":{"patterns":[{"exact":"x-forwarded-proto"},{"exact":"cookie"},{"exact":"user-agent"},{"exact":"proxy-authorization"},{"exact":"from"},{"exact":"authorization"},{"exact":"x-forwarded-for"},{"exact":"x-forwarded-host"}]}},"path_prefix":"/api"}}
[2019-04-12 15:20:59.801][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:302]     http filter #1
[2019-04-12 15:20:59.801][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:303]       name: envoy.cors
[2019-04-12 15:20:59.801][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:307]     config: {}
[2019-04-12 15:20:59.801][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:302]     http filter #2
[2019-04-12 15:20:59.801][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:303]       name: envoy.router
[2019-04-12 15:20:59.801][65][debug][config] [source/extensions/filters/network/http_connection_manager/config.cc:307]     config: {}
[2019-04-12 15:20:59.804][65][debug][config] [source/server/listener_manager_impl.cc:627] add warming listener: name=ambassador-listener-80, hash=1783155174245818883, address=0.0.0.0:80
[2019-04-12 15:20:59.804][65][debug][init] [source/common/init/manager_impl.cc:45] init manager Listener ambassador-listener-80 contains no targets
[2019-04-12 15:20:59.804][65][debug][init] [source/common/init/watcher_impl.cc:14] init manager Listener ambassador-listener-80 initialized, notifying ListenerImpl
[2019-04-12 15:20:59.805][65][debug][config] [source/server/listener_manager_impl.cc:627] warm complete. updating active listener: name=ambassador-listener-80, hash=1783155174245818883, address=0.0.0.0:80
[2019-04-12 15:20:59.805][65][debug][config] [source/server/listener_manager_impl.cc:627] draining listener: name=ambassador-listener-80, hash=5292162044335998753, address=0.0.0.0:80
[2019-04-12 15:20:59.805][65][info][upstream] [source/server/lds_api.cc:74] lds: add/update listener 'ambassador-listener-80'
[2019-04-12 15:20:59.806][65][debug][config] [source/common/config/grpc_mux_impl.cc:104] Resuming discovery requests for type.googleapis.com/envoy.api.v2.RouteConfiguration
[2019-04-12 15:20:59.806][65][debug][config] [bazel-out/k8-dbg/bin/source/common/config/_virtual_includes/grpc_mux_subscription_lib/common/config/grpc_mux_subscription_impl.h:66] gRPC config for type.googleapis.com/envoy.api.v2.Listener accepted with 1 resources with version v40
[2019-04-12 15:20:59.806][65][debug][config] [source/common/config/grpc_mux_impl.cc:118] Received gRPC message for type.googleapis.com/envoy.api.v2.Cluster at version v40
[2019-04-12 15:20:59.806][65][debug][config] [source/common/config/grpc_mux_impl.cc:96] Pausing discovery requests for type.googleapis.com/envoy.api.v2.ClusterLoadAssignment
[2019-04-12 15:20:59.811][65][info][upstream] [source/common/upstream/cluster_manager_impl.cc:483] add/update cluster cluster_extauth_auth_service_svc_8080 starting warming
[2019-04-12 15:20:59.811][65][debug][config] [source/common/config/grpc_mux_impl.cc:96] Pausing discovery requests for type.googleapis.com/envoy.api.v2.Cluster
[2019-04-12 15:20:59.811][65][debug][upstream] [source/common/network/dns_impl.cc:158] Setting DNS resolution timer for 5000 milliseconds
[2019-04-12 15:20:59.811][65][debug][upstream] [source/common/upstream/cds_api_impl.cc:110] cds: add/update cluster 'cluster_extauth_auth_service_svc_8080'
[2019-04-12 15:20:59.811][65][debug][config] [source/common/config/grpc_mux_impl.cc:104] Resuming discovery requests for type.googleapis.com/envoy.api.v2.ClusterLoadAssignment
[2019-04-12 15:20:59.811][65][debug][config] [bazel-out/k8-dbg/bin/source/common/config/_virtual_includes/grpc_mux_subscription_lib/common/config/grpc_mux_subscription_impl.h:66] gRPC config for type.googleapis.com/envoy.api.v2.Cluster accepted with 3 resources with version v40
[2019-04-12 15:20:59.812][65][debug][upstream] [source/common/upstream/upstream_impl.cc:1358] DNS hosts have changed for auth-service-svc
[2019-04-12 15:20:59.812][65][debug][upstream] [source/common/upstream/upstream_impl.cc:721] initializing secondary cluster cluster_extauth_auth_service_svc_8080 completed
[2019-04-12 15:20:59.812][65][debug][init] [source/common/init/manager_impl.cc:45] init manager Cluster cluster_extauth_auth_service_svc_8080 contains no targets
[2019-04-12 15:20:59.812][65][debug][init] [source/common/init/watcher_impl.cc:14] init manager Cluster cluster_extauth_auth_service_svc_8080 initialized, notifying ClusterImplBase
[2019-04-12 15:20:59.812][65][info][upstream] [source/common/upstream/cluster_manager_impl.cc:496] warming cluster cluster_extauth_auth_service_svc_8080 complete
[2019-04-12 15:20:59.812][75][debug][upstream] [source/common/upstream/cluster_manager_impl.cc:517] adding TLS cluster cluster_extauth_auth_service_svc_8080
[2019-04-12 15:20:59.812][76][debug][upstream] [source/common/upstream/cluster_manager_impl.cc:517] adding TLS cluster cluster_extauth_auth_service_svc_8080
[2019-04-12 15:20:59.812][65][debug][upstream] [source/common/upstream/cluster_manager_impl.cc:517] adding TLS cluster cluster_extauth_auth_service_svc_8080
[2019-04-12 15:20:59.812][75][debug][upstream] [source/common/upstream/cluster_manager_impl.cc:978] membership update for TLS cluster cluster_extauth_auth_service_svc_8080 added 1 removed 0
[2019-04-12 15:20:59.812][76][debug][upstream] [source/common/upstream/cluster_manager_impl.cc:978] membership update for TLS cluster cluster_extauth_auth_service_svc_8080 added 1 removed 0
[2019-04-12 15:20:59.812][65][debug][upstream] [source/common/upstream/cluster_manager_impl.cc:978] membership update for TLS cluster cluster_extauth_auth_service_svc_8080 added 1 removed 0
[2019-04-12 15:20:59.812][65][debug][config] [source/common/config/grpc_mux_impl.cc:104] Resuming discovery requests for type.googleapis.com/envoy.api.v2.Cluster
....

关于为什么未检测到路径并将其路由到外部身份验证服务的任何提示？

Answer 1

path_prefix: "/api"不会而不是为您的身份验证服务创建映射，它仅告诉/ api将附加到您的请求中，并且身份验证服务需要该前缀。当您在大使中定义身份验证服务时，所有请求将被重定向到身份验证服务。如果您需要直接向auth服务发出请求，请为其创建映射。

例:
如果您有映射服务:

apiVersion: ambassador/v1
kind:  Mapping
name:  myapp-mapping
prefix: /myapp/
service: myapp:8000

当您执行 curl $URL/myapp/时，请求将被重定向到$ URL / api / myapp的auth-service。身份验证服务需要具有/ api / myapp的终结点。如果返回HTTP状态200，则大使会将原始请求发送到myapp。否则，它将把auth-service响应返回给客户端。
如果您想使用 curl $URL/api/myapp，则可以在身份验证服务中删除前缀，并将myapp的前缀更改为/ api / myapp /

请阅读 this tutorial了解更多详细信息。