Lab 7.2 Not the expected results... I'm lost
- done
- done
- https://github.com/containous/traefik/releases does not have a traefic yaml to download?! so I found the
traefic-ds.yml
in the tar bal - completely confusing as there is nothing to diff.
download.yaml
where does it come from? oh and where does the nametraefic-ds.rule.yaml
come from? I thinktraefic-ds.yaml
is meant? - done based on the given
traefik-ds.yaml
(unchanged) - done (copied the
ingress.rule.yaml
from tarbal) - now it really becomes confusing... created but get deprecation warning (not expected or described in lab)
$ kubectl create -f ingress.rule.yaml Warning: networking.k8s.io/v1beta1 Ingress is deprecated in v1.19+, unavailable in v1.22+; use networking.k8s.io/v1 Ingress ingress.networking.k8s.io/ingress-test created
(not ingress.networking.k8s.io/ingress-test2 created
as described)
- when I do
ip a
I get like 10 entries. I think I must be either one of these two (but I've tried all of them). the 192.168.10.100 is my assigned IP for the virtualbox of "master" so the other one?
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 02:45:97:fd:e2:17 brd ff:ff:ff:ff:ff:ff inet 10.0.2.15/24 brd 10.0.2.255 scope global dynamic enp0s3 valid_lft 65089sec preferred_lft 65089sec inet6 fe80::45:97ff:fefd:e217/64 scope link valid_lft forever preferred_lft forever 3: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 08:00:27:1a:f2:a7 brd ff:ff:ff:ff:ff:ff inet 192.168.10.100/24 brd 192.168.10.255 scope global enp0s8 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe1a:f2a7/64 scope link valid_lft forever preferred_lft forever $ curl -H "Host: www.example.com" http://10.0.2.15 curl: (7) Failed to connect to 10.0.2.15 port 80: Connection refused curl -H "Host: www.example.com" http://192.168.10.100 curl: (7) Failed to connect to 192.168.10.100 port 80: Connection refused
not the expected outcome...
try a few things:
$ kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 6h17m nginx ClusterIP 10.100.6.73 <none> 443/TCP 5h55m registry ClusterIP 10.99.23.233 <none> 5000/TCP 5h55m secondapp LoadBalancer 10.104.28.125 <pending> 80:32000/TCP 17m thirdpage NodePort 10.102.188.72 <none> 80:32298/TCP 74m
curl on the IPs for secondapp and thirdpage work, but those do not go through the ingress so not on the right track but lets look onwards
- done
- done
- done
- with this command:
$ kubectl exec -it thirdpage-<tab> -- sed -i 's/Welcome to nginx!/third page/g' /usr/share/nginx/html/index.html $ curl 10.102.188.72 <!DOCTYPE html> <html> <head> <title>third page</title> ...
- done
- does not work?
- only works if I use the "external"
http://node-ip:8080/dasboard/
where node-ip is the ip of the worker it runs on... There are no providers?
I'm quite lost at this point. I have done the exercises a couple of times now and even reset my whole cluster to make sure of a clean situation, but no dice :-) any help would be much appreciated.
extra information:
$ kubectl describe -n kube-system svc traefik-ingress-service Name: traefik-ingress-service Namespace: kube-system Labels: <none> Annotations: <none> Selector: k8s-app=traefik-ingress-lb Type: ClusterIP IP Families: <none> IP: 10.96.156.101 IPs: 10.96.156.101 Port: web 80/TCP TargetPort: 80/TCP Endpoints: 192.168.10.111:80,192.168.10.112:80 Port: admin 8080/TCP TargetPort: 8080/TCP Endpoints: 192.168.10.111:8080,192.168.10.112:8080 Session Affinity: None Events: <none>
end de ingress
$ kubectl describe ingress ingress-test Name: ingress-test Namespace: default Address: Default backend: default-http-backend:80 (<error: endpoints "default-http-backend" not found>) Rules: Host Path Backends ---- ---- -------- www.example.com / secondapp:80 (192.168.189.72:80) thirdpage.org / thirdpage:80 (192.168.235.139:80) Annotations: kubernetes.io/ingress.class: traefik Events: <none>
Comments
-
Hi @ivonet,
Occasionally, restarting the ingress-test
ingress
resource helps to resolve the "connection refused" issues reported above.Since you seem to have two interfaces on your VM with two IP addresses, try testing the
ingress
resource over the IP address that was used during the cluster bootstrapping process.Also, the user experience on a local vs a cloud environment is expected to be slightly different. It is not so much the cluster configuration, but the networking set up through the hypervisor for host workstation to guest VM, and for guest VM to guest VM connectivity.
Regards,
-Chris0 -
Hi @chrispokorni,
thanks for the answer. I think I figured it out...took me a day :-)
I have a master and two worker nodes. I don't allow deployments on master and that is where the course setup diffs with my setup. Traefik was not deployed on master but only the workers. When I used those IP's it worked immediately.Learned something again :-)
Kind regards,
Ivo.0 -
Hi @ivonet,
Thanks for also sharing your cluster configuration details... now it all makes sense
Regards,
-Chris0
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