Для чего открыт порт kube-proxy? Почему он прослушивает столько портов? - PullRequest
0 голосов
/ 24 февраля 2020

Что за порт, открытый kube-proxy для , Почему он прослушивает столько портов? Из моего узла я вижу, что kube-proxy прослушивает много портов. Может кто-нибудь объяснить мне, почему они слушают так много портов и для чего это нужно? выходные данные, как показано ниже:

[root@runsdata-test-0001 ~]# netstat -antup|grep kube-proxy
tcp        0      0 127.0.0.1:10249         0.0.0.0:*               LISTEN      14370/kube-proxy    
tcp        0      0 10.0.0.154:59638        10.0.0.154:6443         ESTABLISHED 14370/kube-proxy    
tcp6       0      0 :::31860                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::11989                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::26879                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::8100                 :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::10055                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::27688                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::29932                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::4303                 :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::31504                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::10256                :::*                    LISTEN      14370/kube-proxy    
tcp6       0      0 :::21201                :::*                    LISTEN      14370/kube-proxy    
[root@runsdata-test-0001 ~]# ss -antup|grep kube-proxy
tcp    LISTEN     0      128    127.0.0.1:10249                 *:*                   users:(("kube-proxy",pid=14370,fd=9))
tcp    ESTAB      0      0      10.0.0.154:59638              10.0.0.154:6443                users:(("kube-proxy",pid=14370,fd=6))
tcp    LISTEN     0      128    [::]:31860              [::]:*                   users:(("kube-proxy",pid=14370,fd=16))
tcp    LISTEN     0      128    [::]:11989              [::]:*                   users:(("kube-proxy",pid=14370,fd=18))
tcp    LISTEN     0      128    [::]:26879              [::]:*                   users:(("kube-proxy",pid=14370,fd=11))
tcp    LISTEN     0      128    [::]:8100               [::]:*                   users:(("kube-proxy",pid=14370,fd=17))
tcp    LISTEN     0      128    [::]:10055              [::]:*                   users:(("kube-proxy",pid=14370,fd=14))
tcp    LISTEN     0      128    [::]:27688              [::]:*                   users:(("kube-proxy",pid=14370,fd=13))
tcp    LISTEN     0      128    [::]:29932              [::]:*                   users:(("kube-proxy",pid=14370,fd=12))
tcp    LISTEN     0      128    [::]:4303               [::]:*                   users:(("kube-proxy",pid=14370,fd=10))
tcp    LISTEN     0      128    [::]:31504              [::]:*                   users:(("kube-proxy",pid=14370,fd=3))
tcp    LISTEN     0      128    [::]:10256              [::]:*                   users:(("kube-proxy",pid=14370,fd=8))
tcp    LISTEN     0      128    [::]:21201              [::]:*                   users:(("kube-proxy",pid=14370,fd=15))

Как видно из следующих результатов, порт, который прослушивает kube-proxy, не является портом для каждой службы типа clusterip или nodeport. большинство сервисных портов не прослушиваются на

[root@runsdata-test-0001 ~]# kubectl get svc -o wide
NAME                                                     TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)                   AGE   SELECTOR
admin-dashboard                                          ClusterIP   10.0.6.133   <none>        8652/TCP                  76d   app=admin-dashboard
basic-customer-service-web                               ClusterIP   10.0.6.70    <none>        80/TCP                    88d   app=basic-customer-service-web
cloud-agent-dashboard-web                                ClusterIP   10.0.6.82    <none>        80/TCP                    88d   app=cloud-agent-dashboard-web
config-server                                            ClusterIP   10.0.6.199   <none>        8100/TCP                  17d   app=config-server
content-management-service-v2-0                          ClusterIP   10.0.6.149   <none>        8511/TCP                  88d   app=content-management-service-v2-0
customer-service-web-v1                                  ClusterIP   10.0.6.64    <none>        80/TCP                    88d   app=customer-service-web-v1
customer-service-web-v2                                  ClusterIP   10.0.6.12    <none>        80/TCP                    88d   app=customer-service-web-v2
default-http-backend                                     ClusterIP   10.0.6.102   <none>        80/TCP                    62d   k8s-app=default-http-backend
file-server                                              ClusterIP   10.0.6.221   <none>        80/TCP                    88d   app=file-server
glusterfs-cluster                                        ClusterIP   10.0.6.197   <none>        1990/TCP                  88d   <none>
glusterfs-dynamic-2364ef3c-21d9-4b57-8416-3bec33191c63   ClusterIP   10.0.6.145   <none>        1/TCP                     76d   <none>
glusterfs-dynamic-4cebf743-e9a3-4bc0-b96a-e3bca2d7c65b   ClusterIP   10.0.6.139   <none>        1/TCP                     76d   <none>
glusterfs-dynamic-65ab49bf-ea94-471a-be8a-ba9a32eca3f2   ClusterIP   10.0.6.72    <none>        1/TCP                     76d   <none>
glusterfs-dynamic-86817d19-5173-4dfb-a09f-b27785d62619   ClusterIP   10.0.6.42    <none>        1/TCP                     76d   <none>
glusterfs-dynamic-8b31e26e-b33d-4ddf-8604-287b015f4463   ClusterIP   10.0.6.40    <none>        1/TCP                     76d   <none>
glusterfs-dynamic-8ede2720-863d-4329-8c7a-7bc2a7f540e4   ClusterIP   10.0.6.148   <none>        1/TCP                     76d   <none>
glusterfs-dynamic-b0d2f15d-847c-44e6-8272-0390d42806d1   ClusterIP   10.0.6.185   <none>        1/TCP                     76d   <none>
glusterfs-dynamic-b16b2a65-d21d-412e-88b5-ca5fb5ce8626   ClusterIP   10.0.6.29    <none>        1/TCP                     76d   <none>
glusterfs-dynamic-ee1be4cc-d90f-4ac4-a662-6a6fdc25e628   ClusterIP   10.0.6.251   <none>        1/TCP                     76d   <none>
hr-dashboard-web-global                                  ClusterIP   10.0.6.66    <none>        80/TCP                    88d   app=hr-dashboard-web-global
hystrix-dashboard                                        ClusterIP   10.0.6.87    <none>        8650/TCP                  48d   app=hystrix-dashboard
kafka-hs                                                 ClusterIP   None         <none>        9092/TCP                  76d   app=kafka
kafka-server                                             ClusterIP   10.0.6.209   <none>        9092/TCP                  76d   app=kafka
mongo-master                                             ClusterIP   10.0.6.39    <none>        27017/TCP                 88d   name=mongo
mongodb-1                                                ClusterIP   10.0.6.11    <none>        27017/TCP                 17d   <none>
mongodb-2                                                ClusterIP   10.0.6.55    <none>        27017/TCP                 17d   <none>
mongodb-3                                                ClusterIP   10.0.6.114   <none>        27017/TCP                 17d   <none>
mysql-master                                             ClusterIP   10.0.6.201   <none>        3306/TCP                  88d   <none>
news-content-management-web                              ClusterIP   10.0.6.93    <none>        80/TCP                    61d   app=news-content-management-web
peony-ali-api                                            ClusterIP   10.0.6.151   <none>        9220/TCP                  62d   app=peony-ali-api
peony-app-update                                         ClusterIP   10.0.6.138   <none>        9410/TCP                  87d   app=peony-app-update
peony-authenticate-storage-service-v3-0                  ClusterIP   10.0.6.37    <none>        8241/TCP                  88d   app=peony-authenticate-storage-service-v3-0
peony-hr-file-server                                     ClusterIP   10.0.6.53    <none>        80/TCP                    87d   app=peony-hr-file-server
peony-infrastructure-gateway                             ClusterIP   10.0.6.132   <none>        8020/TCP                  60d   app=peony-infrastructure-gateway
peony-log-file-server                                    ClusterIP   10.0.6.54    <none>        80/TCP                    14d   app=peony-log-file-server
peony-media-hr-file-server                               ClusterIP   10.0.6.129   <none>        80/TCP                    87d   app=peony-media-hr-file-server
peony-medical-file-server                                ClusterIP   10.0.6.31    <none>        80/TCP                    87d   app=peony-medical-file-server
peony-online-file-server                                 ClusterIP   10.0.6.217   <none>        80/TCP                    87d   app=peony-online-file-server
peony-payment-service                                    ClusterIP   10.0.6.38    <none>        9400/TCP                  87d   app=peony-payment-service
peony-sms-api                                            ClusterIP   10.0.6.204   <none>        9200/TCP                  87d   app=peony-sms-api
peony-sms-gateway                                        ClusterIP   10.0.6.7     <none>        80/TCP                    87d   app=peony-sms-gateway
peony-sms-sender                                         ClusterIP   10.0.6.135   <none>        9211/TCP                  87d   app=peony-sms-sender
peony-sms-web                                            ClusterIP   10.0.6.74    <none>        80/TCP                    61d   app=peony-sms-web
plum-gatherer-api                                        ClusterIP   10.0.6.239   <none>        80/TCP                    87d   app=plum-gatherer-api
plum-gatherer-gateway                                    ClusterIP   10.0.6.67    <none>        7010/TCP                  87d   app=plum-gatherer-gateway
plum-live-gatherer                                       ClusterIP   10.0.6.187   <none>        7011/TCP                  87d   app=plum-live-gatherer
rabbit-server                                            ClusterIP   10.0.6.125   <none>        5672/TCP,15672/TCP        68d   app=rabbit-server
redis-foundation-master                                  ClusterIP   10.0.6.127   <none>        6379/TCP                  17d   name=redis-foundation
redis-sentinel-0                                         ClusterIP   10.0.6.203   <none>        36379/TCP                 20d   <none>
redis-sentinel-1                                         ClusterIP   10.0.6.10    <none>        36379/TCP                 20d   <none>
redis-sentinel-2                                         ClusterIP   10.0.6.222   <none>        36379/TCP                 20d   <none>
redis-sms-master                                         ClusterIP   10.0.6.50    <none>        6379/TCP                  87d   name=redis-sms
redis-user-master                                        ClusterIP   10.0.6.71    <none>        6379/TCP                  87d   name=redis-user
si-console-web                                           ClusterIP   10.0.6.88    <none>        80/TCP                    87d   app=si-console-web
si-gov-admin-web                                         ClusterIP   10.0.6.152   <none>        80/TCP                    87d   app=si-gov-admin-web
society-admin-web                                        ClusterIP   10.0.6.105   <none>        80/TCP                    86d   app=society-admin-web
society-admin-web-v2                                     ClusterIP   10.0.6.119   <none>        80/TCP                    49d   app=society-admin-web-v2
society-app-config-service-v2-0                          ClusterIP   10.0.6.112   <none>        8013/TCP                  88d   app=society-app-config-service-v2-0
society-assistance-service-v1-0                          ClusterIP   10.0.6.238   <none>        8531/TCP                  88d   app=society-assistance-service-v1-0
society-authenticate-storage-service-v3-0                ClusterIP   10.0.6.177   <none>        8241/TCP                  35d   app=society-authenticate-storage-service-v3-0
society-authorization-server                             ClusterIP   10.0.6.183   <none>        10681/TCP,9010/TCP        88d   app=society-authorization-server
society-certification-service-v2-0                       ClusterIP   10.0.6.198   <none>        8215/TCP                  88d   app=society-certification-service-v2-0
society-config-app-api                                   ClusterIP   10.0.6.9     <none>        80/TCP                    80d   app=society-config-app-api
society-employment-mobile-universal-web                  ClusterIP   10.0.6.247   <none>        80/TCP                    88d   app=society-employment-mobile-universal-web
society-employment-service-v1-0                          ClusterIP   10.0.6.211   <none>        8541/TCP                  87d   app=society-employment-service-v1-0
society-im-service-v1-0                                  ClusterIP   10.0.6.235   <none>        8551/TCP                  87d   app=society-im-service-v1-0
society-insurance-app-api                                ClusterIP   10.0.6.6     <none>        80/TCP                    88d   app=society-insurance-app-api
society-insurance-foundation-service-v2-0                ClusterIP   10.0.6.49    <none>        8223/TCP                  88d   app=society-insurance-foundation-service-v2-0
society-insurance-gateway                                ClusterIP   10.0.6.202   <none>        8020/TCP                  88d   app=society-insurance-gateway
society-insurance-management-service-v2-0                NodePort    10.0.6.140   <none>        8235:31860/TCP            63d   app=society-insurance-management-service-v2-0
society-insurance-resident-service-v2-0                  ClusterIP   10.0.6.5     <none>        8311/TCP                  88d   app=society-insurance-resident-service-v2-0
society-insurance-storage-service-v2-0                   ClusterIP   10.0.6.2     <none>        8228/TCP                  88d   app=society-insurance-storage-service-v2-0
society-insurance-user-service-v2-0                      ClusterIP   10.0.6.23    <none>        8221/TCP                  88d   app=society-insurance-user-service-v2-0
society-insurance-web-api                                ClusterIP   10.0.6.236   <none>        80/TCP                    88d   app=society-insurance-web-api
society-material-h5-web                                  ClusterIP   10.0.6.43    <none>        80/TCP                    73d   app=society-material-h5-web
society-material-service-v1-0                            ClusterIP   10.0.6.241   <none>        8261/TCP                  67d   app=society-material-service-v1-0
society-material-web                                     ClusterIP   10.0.6.65    <none>        80/TCP                    83d   app=society-material-web
society-notice-service-v1-0                              ClusterIP   10.0.6.16    <none>        8561/TCP                  14d   app=society-notice-service-v1-0
society-online-business-admin-web                        ClusterIP   10.0.6.230   <none>        80/TCP                    88d   app=society-online-business-admin-web
society-online-business-configure-h5-web                 ClusterIP   10.0.6.8     <none>        80/TCP                    88d   app=society-online-business-configure-h5-web
society-online-business-mobile-web                       ClusterIP   10.0.6.137   <none>        80/TCP                    88d   app=society-online-business-mobile-web
society-online-business-mobile-web-v2-0                  ClusterIP   10.0.6.108   <none>        80/TCP                    87d   app=society-online-business-mobile-web-v2-0
society-online-business-mobile-web-v2-1                  ClusterIP   10.0.6.128   <none>        80/TCP                    87d   app=society-online-business-mobile-web-v2-1
society-online-business-processor-service-v1-0           ClusterIP   10.0.6.99    <none>        10042/TCP                 88d   app=global-online-business-processor-service-v1-0
society-online-business-service-v2-0                     ClusterIP   10.0.6.186   <none>        8216/TCP                  88d   app=society-online-business-service-v2-0
society-online-business-service-v2-1                     ClusterIP   10.0.6.162   <none>        8216/TCP                  88d   app=society-online-business-service-v2-1
society-operation-gateway                                ClusterIP   10.0.6.4     <none>        8010/TCP                  88d   app=society-operation-gateway
society-operation-user-service-v1-1                      ClusterIP   10.0.6.35    <none>        8012/TCP                  88d   app=society-operation-user-service-v1-1
society-operator-management-service-v1-0                 ClusterIP   10.0.6.234   <none>        8271/TCP                  83d   app=society-operator-management-service-v1-0
society-operator-management-web                          ClusterIP   10.0.6.150   <none>        80/TCP                    77d   app=society-operator-management-web
society-portal-mobile-universal-web                      ClusterIP   10.0.6.244   <none>        80/TCP                    88d   app=society-portal-mobile-universal-web
society-portal-nationwide-web                            ClusterIP   10.0.6.237   <none>        80/TCP                    88d   app=society-portal-nationwide-web
society-proxy-access-service-v2-0                        ClusterIP   10.0.6.243   <none>        8411/TCP                  58d   app=society-proxy-access-service-v2-0
society-resident-service-v3-0                            ClusterIP   10.0.6.63    <none>        8231/TCP                  88d   app=society-resident-service-v3-0
society-training-exam-web                                ClusterIP   10.0.6.83    <none>        80/TCP                    37d   app=society-training-exam-web
society-training-mobile-universal-web                    ClusterIP   10.0.6.210   <none>        80/TCP                    88d   app=society-training-mobile-universal-web
society-training-service-v1-0                            ClusterIP   10.0.6.36    <none>        8521/TCP                  88d   app=society-training-service-v1-0
society-user-service-v2-0                                ClusterIP   10.0.6.216   <none>        8211/TCP                  87d   app=society-user-service-v2-0
society-user-service-v3-0                                ClusterIP   10.0.6.227   <none>        8211/TCP                  88d   app=society-user-service-v3-0
sports-training-web                                      ClusterIP   10.0.6.123   <none>        80/TCP                    87d   app=sports-training-web
static-file-server                                       ClusterIP   10.0.6.73    <none>        80/TCP                    88d   app=static-file-server
traefik-ingress-controller                               ClusterIP   10.0.6.225   <none>        80/TCP,6080/TCP,443/TCP   17d   app=traefik-ingress-controller
turbine-server                                           ClusterIP   10.0.6.160   <none>        8989/TCP                  76d   app=turbine-server
weedfs-filer                                             ClusterIP   10.0.6.32    <none>        8080/TCP                  19d   app=weedfs-filer
weedfs-master                                            ClusterIP   10.0.6.91    <none>        9333/TCP                  87d   app=weedfs-master
weedfs-volume-1                                          ClusterIP   10.0.6.79    <none>        8080/TCP                  87d   app=weedfs-volume-1
zipkin-server                                            ClusterIP   10.0.6.184   <none>        9411/TCP                  48d   app=zipkin-server
zk-cs                                                    ClusterIP   10.0.6.194   <none>        2181/TCP                  76d   app=zk
zk-hs                                                    ClusterIP   None         <none>        2888/TCP,3888/TCP         76d   app=zk
[root@runsdata-test-0001 ~]# ss -antup|grep kube-proxy
tcp    LISTEN     0      128    127.0.0.1:10249                 *:*                   users:(("kube-proxy",pid=14370,fd=9))
tcp    ESTAB      0      0      10.0.0.154:59638              10.0.0.154:6443                users:(("kube-proxy",pid=14370,fd=6))
tcp    LISTEN     0      128    [::]:31860              [::]:*                   users:(("kube-proxy",pid=14370,fd=16))
tcp    LISTEN     0      128    [::]:11989              [::]:*                   users:(("kube-proxy",pid=14370,fd=18))
tcp    LISTEN     0      128    [::]:26879              [::]:*                   users:(("kube-proxy",pid=14370,fd=11))
tcp    LISTEN     0      128    [::]:8100               [::]:*                   users:(("kube-proxy",pid=14370,fd=17))
tcp    LISTEN     0      128    [::]:10055              [::]:*                   users:(("kube-proxy",pid=14370,fd=14))
tcp    LISTEN     0      128    [::]:27688              [::]:*                   users:(("kube-proxy",pid=14370,fd=13))
tcp    LISTEN     0      128    [::]:29932              [::]:*                   users:(("kube-proxy",pid=14370,fd=12))
tcp    LISTEN     0      128    [::]:4303               [::]:*                   users:(("kube-proxy",pid=14370,fd=10))
tcp    LISTEN     0      128    [::]:31504              [::]:*                   users:(("kube-proxy",pid=14370,fd=3))
tcp    LISTEN     0      128    [::]:10256              [::]:*                   users:(("kube-proxy",pid=14370,fd=8))
tcp    LISTEN     0      128    [::]:21201              [::]:*                   users:(("kube-proxy",pid=14370,fd=15))
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 31860
society-insurance-management-service-v2-0                NodePort    10.0.6.140   <none>        8235:31860/TCP            63d   app=society-insurance-management-service-v2-0
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 11989
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 26879
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 8100
config-server                                            ClusterIP   10.0.6.199   <none>        8100/TCP                  17d   app=config-server
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 10055
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 27688
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 29932
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 4303
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 31504
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 10256
[root@runsdata-test-0001 ~]# kubectl get svc -o wide |grep 21201
[root@runsdata-test-0001 ~]#

Ответы [ 2 ]

1 голос
/ 24 февраля 2020

На основании официальной документации :

kube-proxy отражает службы, определенные в API Kubernetes для каждого узла, и может выполнять простую пересылку потоков TCP, UDP и SCTP. или циклическая переадресация TCP, UDP и SCTP через набор бэкэндов

По сути, он прослушивает активные Service s и перенаправляет их по вашему кластеру.

Вы можете получить список зарегистрированных услуг с:

kubectl --all-namespaces get svc
0 голосов
/ 24 февраля 2020

Каждый раз, когда вы создаете службу типа ClusterIP или NodePort в kubernetes, кубический прокси начинает прослушивать порты, определенные в этих службах, и запросы, приходящие на эти IP и порт, будут перенаправляться на внутренние модули.

enter image description here

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