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Rabah DevOps's questions

Martin Hope
Rabah DevOps
Asked: 2025-02-27 15:16:47 +0800 CST
  • 5

Tenho o Virtualbox com quatro adaptadores de rede.

  1. adaptador somente host
  2. adaptador interno
  3. adaptador somente host
  4. adaptador NAT

NAT na primeira interface:

route -n

0.0.0.0         10.0.2.2        0.0.0.0         UG    100    0        0 enp0s3
10.0.2.0        0.0.0.0         255.255.255.0   U     100    0        0 enp0s3
10.0.2.2        0.0.0.0         255.255.255.255 UH    100    0        0 enp0s3
10.0.2.3        0.0.0.0         255.255.255.255 UH    100    0        0 enp0s3
10.10.0.0       0.0.0.0         255.255.255.0   U     100    0        0 enp0s8
203.0.133.0     0.0.0.0         255.255.255.0   U     100    0        0 enp0s9


1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:46:e4:90 brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.15/24 metric 100 brd 10.0.2.255 scope global dynamic enp0s3
       valid_lft 86198sec preferred_lft 86198sec
    inet6 fd00::a00:27ff:fe46:e490/64 scope global dynamic mngtmpaddr noprefixroute
       valid_lft 86201sec preferred_lft 14201sec
    inet6 fe80::a00:27ff:fe46:e490/64 scope link
       valid_lft forever preferred_lft forever
3: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:fc:34:9c brd ff:ff:ff:ff:ff:ff
    inet 10.10.0.6/24 metric 100 brd 10.10.0.255 scope global dynamic enp0s8
       valid_lft 398sec preferred_lft 398sec
    inet6 fe80::a00:27ff:fefc:349c/64 scope link
       valid_lft forever preferred_lft forever
4: enp0s9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:fb:36:58 brd ff:ff:ff:ff:ff:ff
    inet 203.0.133.5/24 metric 100 brd 203.0.133.255 scope global dynamic enp0s9
       valid_lft 398sec preferred_lft 398sec
    inet6 fe80::a00:27ff:fefb:3658/64 scope link
       valid_lft forever preferred_lft forever
5: enp0s10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:82:93:6b brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:fe82:936b/64 scope link
       valid_lft forever preferred_lft forever

Host Only na primeira interface e NAT na segunda interface:

route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.0.2.2        0.0.0.0         UG    100    0        0 enp0s8
10.0.2.0        0.0.0.0         255.255.255.0   U     100    0        0 enp0s8
10.0.2.2        0.0.0.0         255.255.255.255 UH    100    0        0 enp0s8
10.0.2.3        0.0.0.0         255.255.255.255 UH    100    0        0 enp0s8
10.10.0.0       0.0.0.0         255.255.255.0   U     100    0        0 enp0s3
203.0.133.0     0.0.0.0         255.255.255.0   U     100    0        0 enp0s9

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute
       valid_lft forever preferred_lft forever
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:46:e4:90 brd ff:ff:ff:ff:ff:ff
    inet 10.10.0.5/24 metric 100 brd 10.10.0.255 scope global dynamic enp0s3
       valid_lft 462sec preferred_lft 462sec
    inet6 fe80::a00:27ff:fe46:e490/64 scope link
       valid_lft forever preferred_lft forever
3: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:fc:34:9c brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.15/24 metric 100 brd 10.0.2.255 scope global dynamic enp0s8
       valid_lft 85962sec preferred_lft 85962sec
    inet6 fd00::a00:27ff:fefc:349c/64 scope global dynamic mngtmpaddr noprefixroute
       valid_lft 85964sec preferred_lft 13964sec
    inet6 fe80::a00:27ff:fefc:349c/64 scope link
       valid_lft forever preferred_lft forever
4: enp0s9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:fb:36:58 brd ff:ff:ff:ff:ff:ff
    inet 203.0.133.5/24 metric 100 brd 203.0.133.255 scope global dynamic enp0s9
       valid_lft 462sec preferred_lft 462sec
    inet6 fe80::a00:27ff:fefb:3658/64 scope link
       valid_lft forever preferred_lft forever
5: enp0s10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:82:93:6b brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:fe82:936b/64 scope link
       valid_lft forever preferred_lft forever

Não consigo me conectar à minha VM usando NAT e encaminhamento de porta quando o NAT está na segunda, terceira ou última posição na interface de rede.

Deve estar sempre na primeira posição.

Alguém pode explicar o porquê?

Obrigado

networking
Martin Hope
Rabah DevOps
Asked: 2022-12-19 15:47:51 +0800 CST
  • 5

Eu instalei o traefik usando o leme

mas quando tento navegar pela interface do usuário da web, tenho o erro 404 não encontrado com http e https:

    helm install traefik traefik/traefik 

    kubectl get svc -l app.kubernetes.io/name=traefik
    NAME      TYPE           CLUSTER-IP    EXTERNAL-IP   PORT(S)                      AGE
    traefik   LoadBalancer   10.99.97.18   10.0.2.13     80:32644/TCP,443:32704/TCP   17m

curl http://10.0.2.13
404 page not found

Eu tenho o gitlab-ci no loadbalancer e está funcionando bem.

  kubectl get svc
    NAME                    TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)                        AGE
    kubernetes              ClusterIP      10.96.0.1       <none>        443/TCP                        4d23h
    load-balancer-service   LoadBalancer   10.106.191.82   10.0.2.10     80:31560/TCP                   3d3h
    test-gitlab             LoadBalancer   10.111.57.85    10.0.2.12     8080:31920/TCP,443:31004/TCP   2d6h
    traefik                 LoadBalancer   10.99.97.18     10.0.2.13     80:32644/TCP,443:32704/TCP     18m


curl http://10.0.2.12:8080
<html><body>You are being <a href="http://10.0.2.12:8080/users/sign_in">redirected</a>.</body></html>rbo@k8smaster1:~/metallb/nginx$
kubernetes