지원콘솔개발자평가판 시작연락처

7.11. 마스터 및 노드 로그 보기

OpenShift Container Platform은 노드에 systemd-journald.service를 사용하고 마스터를 위해 master- logs 라는 스크립트를 사용하여 디버깅을 위해 로그 메시지를 수집합니다.

참고

웹 콘솔에 표시되는 행 수는 5000으로 하드 코딩되어 있으며 변경할 수 없습니다. 전체 로그를 보려면 CLI를 사용합니다.

로깅은 다음과 같이 Kubernetes 로깅 규칙에 따라 5개의 로그 메시지 심각도를 사용합니다.

표 7.23. 로그 수준 옵션
옵션설명

0

오류 및 경고 만

2

일반 정보

4

디버깅 수준 정보

6

API 수준 디버깅 정보(요청/응답)

8

본문 수준 API 디버깅 정보

필요한 경우 마스터 또는 노드의 로그 수준을 독립적으로 변경할 수 있습니다.

노드 로그 보기

노드 시스템의 로그를 보려면 다음 명령을 실행합니다. 

# journalctl -r -u <journal_name>

r 옵션을 사용하여 최신 항목을 먼저 표시합니다.

마스터 로그 보기

마스터 구성 요소의 로그를 보려면 다음 명령을 실행합니다. 

# /usr/local/bin/master-logs <component> <container>

예를 들면 다음과 같습니다. 

# /usr/local/bin/master-logs controllers controllers
# /usr/local/bin/master-logs api api
# /usr/local/bin/master-logs etcd etcd

마스터 로그를 파일로 리디렉션

마스터 로그인 출력을 파일로 리디렉션하려면 다음 명령을 실행합니다. 

master-logs api api 2> file

7.11.1. 로깅 수준 구성

노드의 master 또는 /etc/ sysconfig/atomic-openshift-node 파일의 /etc/origin/master/master/env 파일에서 DEBUG_LOGLEVEL 옵션을 설정하여 로깅되는 INFO 메시지를 제어할 수 있습니다. 모든 메시지를 수집하도록 로그를 구성하면 해석하기 어려워지고 과도한 공간을 차지할 수 있는 대용량 로그가 발생할 수 있습니다. 클러스터를 디버깅해야 하는 경우에만 모든 메시지를 수집합니다.

참고

FATAL, ERROR, WARNING 및 일부 INFO 심각도가 있는 메시지는 로그 구성에 관계없이 로그에 표시됩니다.

로깅 수준을 변경하려면 다음을 수행합니다.

  1. 노드의 마스터 또는 /etc/ sysconfig/atomic-openshift-node 파일의 /etc/origin/ master/master.env 파일을 편집합니다.

  2. DEBUG_LOGLEVEL (로그 수준 옵션) 필드에 Log Level Options (로그 수준 옵션) 테이블의 값을 입력합니다.

    예를 들면 다음과 같습니다. 

    DEBUG_LOGLEVEL=4
  3. 마스터 또는 노드 호스트를 적절하게 다시 시작합니다. OpenShift Container Platform 서비스 재시작을 참조하십시오.

재시작 후 모든 새 로그 메시지는 새 설정을 준수합니다. 이전 메시지는 변경되지 않습니다.

참고

기본 로그 수준은 표준 클러스터 설치 프로세스를 사용하여 설정할 수 있습니다. 자세한 내용은 클러스터 변수를 참조하십시오.

다음 예제는 다양한 로그 수준에서 리디렉션된 마스터 로그 파일의 발췌 내용입니다. 이러한 예에서 시스템 정보가 제거되었습니다.

loglevel=2에서 master-logs api api 2> 파일 출력 발췌

W1022 15:08:09.787705       1 server.go:79] Unable to keep dnsmasq up to date, 0.0.0.0:8053 must point to port 53
I1022 15:08:09.787894       1 logs.go:49] skydns: ready for queries on cluster.local. for tcp4://0.0.0.0:8053 [rcache 0]
I1022 15:08:09.787913       1 logs.go:49] skydns: ready for queries on cluster.local. for udp4://0.0.0.0:8053 [rcache 0]
I1022 15:08:09.889022       1 dns_server.go:63] DNS listening at 0.0.0.0:8053
I1022 15:08:09.893156       1 feature_gate.go:190] feature gates: map[AdvancedAuditing:true]
I1022 15:08:09.893500       1 master.go:431] Starting OAuth2 API at /oauth
I1022 15:08:09.914759       1 master.go:431] Starting OAuth2 API at /oauth
I1022 15:08:09.942349       1 master.go:431] Starting OAuth2 API at /oauth
W1022 15:08:09.977088       1 swagger.go:38] No API exists for predefined swagger description /oapi/v1
W1022 15:08:09.977176       1 swagger.go:38] No API exists for predefined swagger description /api/v1
[restful] 2018/10/22 15:08:09 log.go:33: [restful/swagger] listing is available at https://openshift.com:443/swaggerapi
[restful] 2018/10/22 15:08:09 log.go:33: [restful/swagger] https://openshift.com:443/swaggerui/ is mapped to folder /swagger-ui/
I1022 15:08:10.231405       1 master.go:431] Starting OAuth2 API at /oauth
W1022 15:08:10.259523       1 swagger.go:38] No API exists for predefined swagger description /oapi/v1
W1022 15:08:10.259555       1 swagger.go:38] No API exists for predefined swagger description /api/v1
I1022 15:08:23.895493       1 logs.go:49] http: TLS handshake error from 10.10.94.10:46322: EOF
I1022 15:08:24.449577       1 crdregistration_controller.go:110] Starting crd-autoregister controller
I1022 15:08:24.449916       1 controller_utils.go:1019] Waiting for caches to sync for crd-autoregister controller
I1022 15:08:24.496147       1 logs.go:49] http: TLS handshake error from 127.0.0.1:39140: EOF
I1022 15:08:24.821198       1 cache.go:39] Caches are synced for APIServiceRegistrationController controller
I1022 15:08:24.833022       1 cache.go:39] Caches are synced for AvailableConditionController controller
I1022 15:08:24.865087       1 controller.go:537] quota admission added evaluator for: { events}
I1022 15:08:24.865393       1 logs.go:49] http: TLS handshake error from 127.0.0.1:39162: read tcp4 127.0.0.1:443->127.0.0.1:39162: read: connection reset by peer
I1022 15:08:24.966917       1 controller_utils.go:1026] Caches are synced for crd-autoregister controller
I1022 15:08:24.967961       1 autoregister_controller.go:136] Starting autoregister controller
I1022 15:08:24.967977       1 cache.go:32] Waiting for caches to sync for autoregister controller
I1022 15:08:25.015924       1 controller.go:537] quota admission added evaluator for: { serviceaccounts}
I1022 15:08:25.077984       1 cache.go:39] Caches are synced for autoregister controller
W1022 15:08:25.304265       1 lease_endpoint_reconciler.go:176] Resetting endpoints for master service "kubernetes" to [10.10.94.10]
E1022 15:08:25.472536       1 memcache.go:153] couldn't get resource list for servicecatalog.k8s.io/v1beta1: the server could not find the requested resource
E1022 15:08:25.550888       1 memcache.go:153] couldn't get resource list for servicecatalog.k8s.io/v1beta1: the server could not find the requested resource
I1022 15:08:29.480691       1 healthz.go:72] /healthz/log check
I1022 15:08:30.981999       1 controller.go:105] OpenAPI AggregationController: Processing item v1beta1.servicecatalog.k8s.io
E1022 15:08:30.990914       1 controller.go:111] loading OpenAPI spec for "v1beta1.servicecatalog.k8s.io" failed with: OpenAPI spec does not exists
I1022 15:08:30.990965       1 controller.go:119] OpenAPI AggregationController: action for item v1beta1.servicecatalog.k8s.io: Rate Limited Requeue.
I1022 15:08:31.530473       1 trace.go:76] Trace[1253590531]: "Get /api/v1/namespaces/openshift-infra/serviceaccounts/serviceaccount-controller" (started: 2018-10-22 15:08:30.868387562 +0000 UTC m=+24.277041043) (total time: 661.981642ms):
Trace[1253590531]: [661.903178ms] [661.89217ms] About to write a response
I1022 15:08:31.531366       1 trace.go:76] Trace[83808472]: "Get /api/v1/namespaces/aws-sb/secrets/aws-servicebroker" (started: 2018-10-22 15:08:30.831296749 +0000 UTC m=+24.239950203) (total time: 700.049245ms):

loglevel=4에서 master-logs api api 2> 파일 출력 발췌

I1022 15:08:09.746980       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: AlwaysDeny.
I1022 15:08:09.747597       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: ResourceQuota.
I1022 15:08:09.748038       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: openshift.io/ClusterResourceQuota.
I1022 15:08:09.786771       1 start_master.go:458] Starting master on 0.0.0.0:443 (v3.10.45)
I1022 15:08:09.786798       1 start_master.go:459] Public master address is https://openshift.com:443
I1022 15:08:09.786844       1 start_master.go:463] Using images from "registry.access.redhat.com/openshift3/ose-<component>:v3.10.45"
W1022 15:08:09.787046       1 dns_server.go:37] Binding DNS on port 8053 instead of 53, which may not be resolvable from all clients
W1022 15:08:09.787705       1 server.go:79] Unable to keep dnsmasq up to date, 0.0.0.0:8053 must point to port 53
I1022 15:08:09.787894       1 logs.go:49] skydns: ready for queries on cluster.local. for tcp4://0.0.0.0:8053 [rcache 0]
I1022 15:08:09.787913       1 logs.go:49] skydns: ready for queries on cluster.local. for udp4://0.0.0.0:8053 [rcache 0]
I1022 15:08:09.889022       1 dns_server.go:63] DNS listening at 0.0.0.0:8053
I1022 15:08:09.893156       1 feature_gate.go:190] feature gates: map[AdvancedAuditing:true]
I1022 15:08:09.893500       1 master.go:431] Starting OAuth2 API at /oauth
I1022 15:08:09.914759       1 master.go:431] Starting OAuth2 API at /oauth
I1022 15:08:09.942349       1 master.go:431] Starting OAuth2 API at /oauth
W1022 15:08:09.977088       1 swagger.go:38] No API exists for predefined swagger description /oapi/v1
W1022 15:08:09.977176       1 swagger.go:38] No API exists for predefined swagger description /api/v1
[restful] 2018/10/22 15:08:09 log.go:33: [restful/swagger] listing is available at https://openshift.com:443/swaggerapi
[restful] 2018/10/22 15:08:09 log.go:33: [restful/swagger] https://openshift.com:443/swaggerui/ is mapped to folder /swagger-ui/
I1022 15:08:10.231405       1 master.go:431] Starting OAuth2 API at /oauth
W1022 15:08:10.259523       1 swagger.go:38] No API exists for predefined swagger description /oapi/v1
W1022 15:08:10.259555       1 swagger.go:38] No API exists for predefined swagger description /api/v1
[restful] 2018/10/22 15:08:10 log.go:33: [restful/swagger] listing is available at https://openshift.com:443/swaggerapi
[restful] 2018/10/22 15:08:10 log.go:33: [restful/swagger] https://openshift.com:443/swaggerui/ is mapped to folder /swagger-ui/
I1022 15:08:10.444303       1 master.go:431] Starting OAuth2 API at /oauth
W1022 15:08:10.492409       1 swagger.go:38] No API exists for predefined swagger description /oapi/v1
W1022 15:08:10.492507       1 swagger.go:38] No API exists for predefined swagger description /api/v1
[restful] 2018/10/22 15:08:10 log.go:33: [restful/swagger] listing is available at https://openshift.com:443/swaggerapi
[restful] 2018/10/22 15:08:10 log.go:33: [restful/swagger] https://openshift.com:443/swaggerui/ is mapped to folder /swagger-ui/
I1022 15:08:10.774824       1 master.go:431] Starting OAuth2 API at /oauth
I1022 15:08:23.808685       1 logs.go:49] http: TLS handshake error from 10.128.0.11:39206: EOF
I1022 15:08:23.815311       1 logs.go:49] http: TLS handshake error from 10.128.0.14:53054: EOF
I1022 15:08:23.822286       1 customresource_discovery_controller.go:174] Starting DiscoveryController
I1022 15:08:23.822349       1 naming_controller.go:276] Starting NamingConditionController
I1022 15:08:23.822705       1 logs.go:49] http: TLS handshake error from 10.128.0.14:53056: EOF
+24.277041043) (total time: 661.981642ms):
Trace[1253590531]: [661.903178ms] [661.89217ms] About to write a response
I1022 15:08:31.531366       1 trace.go:76] Trace[83808472]: "Get /api/v1/namespaces/aws-sb/secrets/aws-servicebroker" (started: 2018-10-22 15:08:30.831296749 +0000 UTC m=+24.239950203) (total time: 700.049245ms):
Trace[83808472]: [700.049245ms] [700.04027ms] END
I1022 15:08:31.531695       1 trace.go:76] Trace[1916801734]: "Get /api/v1/namespaces/aws-sb/secrets/aws-servicebroker" (started: 2018-10-22 15:08:31.031163449 +0000 UTC m=+24.439816907) (total time: 500.514208ms):
Trace[1916801734]: [500.514208ms] [500.505008ms] END
I1022 15:08:44.675371       1 healthz.go:72] /healthz/log check
I1022 15:08:46.589759       1 controller.go:537] quota admission added evaluator for: { endpoints}
I1022 15:08:46.621270       1 controller.go:537] quota admission added evaluator for: { endpoints}
I1022 15:08:57.159494       1 healthz.go:72] /healthz/log check
I1022 15:09:07.161315       1 healthz.go:72] /healthz/log check
I1022 15:09:16.297982       1 trace.go:76] Trace[2001108522]: "GuaranteedUpdate etcd3: *core.Node" (started: 2018-10-22 15:09:15.139820419 +0000 UTC m=+68.548473981) (total time: 1.158128974s):
Trace[2001108522]: [1.158012755s] [1.156496534s] Transaction committed
I1022 15:09:16.298165       1 trace.go:76] Trace[1124283912]: "Patch /api/v1/nodes/master-0.com/status" (started: 2018-10-22 15:09:15.139695483 +0000 UTC m=+68.548348970) (total time: 1.158434318s):
Trace[1124283912]: [1.158328853s] [1.15713683s] Object stored in database
I1022 15:09:16.298761       1 trace.go:76] Trace[24963576]: "GuaranteedUpdate etcd3: *core.Node" (started: 2018-10-22 15:09:15.13159057 +0000 UTC m=+68.540244112) (total time: 1.167151224s):
Trace[24963576]: [1.167106144s] [1.165570379s] Transaction committed
I1022 15:09:16.298882       1 trace.go:76] Trace[222129183]: "Patch /api/v1/nodes/node-0.com/status" (started: 2018-10-22 15:09:15.131269234 +0000 UTC m=+68.539922722) (total time: 1.167595526s):
Trace[222129183]: [1.167517296s] [1.166135605s] Object stored in database

loglevel=8에서 master-logs api api 2> 파일 출력 발췌

1022 15:11:58.829357       1 plugins.go:84] Registered admission plugin "NamespaceLifecycle"
I1022 15:11:58.839967       1 plugins.go:84] Registered admission plugin "Initializers"
I1022 15:11:58.839994       1 plugins.go:84] Registered admission plugin "ValidatingAdmissionWebhook"
I1022 15:11:58.840012       1 plugins.go:84] Registered admission plugin "MutatingAdmissionWebhook"
I1022 15:11:58.840025       1 plugins.go:84] Registered admission plugin "AlwaysAdmit"
I1022 15:11:58.840082       1 plugins.go:84] Registered admission plugin "AlwaysPullImages"
I1022 15:11:58.840105       1 plugins.go:84] Registered admission plugin "LimitPodHardAntiAffinityTopology"
I1022 15:11:58.840126       1 plugins.go:84] Registered admission plugin "DefaultTolerationSeconds"
I1022 15:11:58.840146       1 plugins.go:84] Registered admission plugin "AlwaysDeny"
I1022 15:11:58.840176       1 plugins.go:84] Registered admission plugin "EventRateLimit"
I1022 15:11:59.850825       1 feature_gate.go:190] feature gates: map[AdvancedAuditing:true]
I1022 15:11:59.859108       1 register.go:154] Admission plugin AlwaysAdmit is not enabled.  It will not be started.
I1022 15:11:59.859284       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: AlwaysAdmit.
I1022 15:11:59.859809       1 register.go:154] Admission plugin NamespaceAutoProvision is not enabled.  It will not be started.
I1022 15:11:59.859939       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: NamespaceAutoProvision.
I1022 15:11:59.860594       1 register.go:154] Admission plugin NamespaceExists is not enabled.  It will not be started.
I1022 15:11:59.860778       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: NamespaceExists.
I1022 15:11:59.863999       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: NamespaceLifecycle.
I1022 15:11:59.864626       1 register.go:154] Admission plugin EventRateLimit is not enabled.  It will not be started.
I1022 15:11:59.864768       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: EventRateLimit.
I1022 15:11:59.865259       1 register.go:154] Admission plugin ProjectRequestLimit is not enabled.  It will not be started.
I1022 15:11:59.865376       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: ProjectRequestLimit.
I1022 15:11:59.866126       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: OriginNamespaceLifecycle.
I1022 15:11:59.866709       1 register.go:154] Admission plugin openshift.io/RestrictSubjectBindings is not enabled.  It will not be started.
I1022 15:11:59.866761       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: openshift.io/RestrictSubjectBindings.
I1022 15:11:59.867304       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: openshift.io/JenkinsBootstrapper.
I1022 15:11:59.867823       1 plugins.go:149] Loaded 1 admission controller(s) successfully in the following order: openshift.io/BuildConfigSecretInjector.
I1022 15:12:00.015273       1 master_config.go:476] Initializing cache sizes based on 0MB limit
I1022 15:12:00.015896       1 master_config.go:539] Using the lease endpoint reconciler with TTL=15s and interval=10s
I1022 15:12:00.018396       1 storage_factory.go:285] storing { apiServerIPInfo} in v1, reading as __internal from storagebackend.Config{Type:"etcd3", Prefix:"kubernetes.io", ServerList:[]string{"https://master-0.com:2379"}, KeyFile:"/etc/origin/master/master.etcd-client.key", CertFile:"/etc/origin/master/master.etcd-client.crt", CAFile:"/etc/origin/master/master.etcd-ca.crt", Quorum:true, Paging:true, DeserializationCacheSize:0, Codec:runtime.Codec(nil), Transformer:value.Transformer(nil), CompactionInterval:300000000000, CountMetricPollPeriod:60000000000}
I1022 15:12:00.037710       1 storage_factory.go:285] storing { endpoints} in v1, reading as __internal from storagebackend.Config{Type:"etcd3", Prefix:"kubernetes.io", ServerList:[]string{"https://master-0.com:2379"}, KeyFile:"/etc/origin/master/master.etcd-client.key", CertFile:"/etc/origin/master/master.etcd-client.crt", CAFile:"/etc/origin/master/master.etcd-ca.crt", Quorum:true, Paging:true, DeserializationCacheSize:0, Codec:runtime.Codec(nil), Transformer:value.Transformer(nil), CompactionInterval:300000000000, CountMetricPollPeriod:60000000000}
I1022 15:12:00.054112       1 compact.go:54] compactor already exists for endpoints [https://master-0.com:2379]
I1022 15:12:00.054678       1 start_master.go:458] Starting master on 0.0.0.0:443 (v3.10.45)
I1022 15:12:00.054755       1 start_master.go:459] Public master address is https://openshift.com:443
I1022 15:12:00.054837       1 start_master.go:463] Using images from "registry.access.redhat.com/openshift3/ose-<component>:v3.10.45"
W1022 15:12:00.056957       1 dns_server.go:37] Binding DNS on port 8053 instead of 53, which may not be resolvable from all clients
W1022 15:12:00.065497       1 server.go:79] Unable to keep dnsmasq up to date, 0.0.0.0:8053 must point to port 53
I1022 15:12:00.066061       1 logs.go:49] skydns: ready for queries on cluster.local. for tcp4://0.0.0.0:8053 [rcache 0]
I1022 15:12:00.066265       1 logs.go:49] skydns: ready for queries on cluster.local. for udp4://0.0.0.0:8053 [rcache 0]
I1022 15:12:00.158725       1 dns_server.go:63] DNS listening at 0.0.0.0:8053
I1022 15:12:00.167910       1 htpasswd.go:118] Loading htpasswd file /etc/origin/master/htpasswd...
I1022 15:12:00.168182       1 htpasswd.go:118] Loading htpasswd file /etc/origin/master/htpasswd...
I1022 15:12:00.231233       1 storage_factory.go:285] storing {apps.openshift.io deploymentconfigs} in apps.openshift.io/v1, reading as apps.openshift.io/__internal from storagebackend.Config{Type:"etcd3", Prefix:"openshift.io", ServerList:[]string{"https://master-0.com:2379"}, KeyFile:"/etc/origin/master/master.etcd-client.key", CertFile:"/etc/origin/master/master.etcd-client.crt", CAFile:"/etc/origin/master/master.etcd-ca.crt", Quorum:true, Paging:true, DeserializationCacheSize:0, Codec:runtime.Codec(nil), Transformer:value.Transformer(nil), CompactionInterval:300000000000, CountMetricPollPeriod:60000000000}
I1022 15:12:00.248136       1 compact.go:54] compactor already exists for endpoints [https://master-0.com:2379]
I1022 15:12:00.248697       1 store.go:1391] Monitoring deploymentconfigs.apps.openshift.io count at <storage-prefix>//deploymentconfigs
W1022 15:12:00.256861       1 swagger.go:38] No API exists for predefined swagger description /oapi/v1
W1022 15:12:00.258106       1 swagger.go:38] No API exists for predefined swagger description /api/v1

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