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rancher / rke

Rancher Kubernetes Engine (RKE), an extremely simple, lightning fast Kubernetes distribution that runs entirely within containers.
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Pods getting the same ip address #338

Closed sabiodelhielo closed 6 years ago

sabiodelhielo commented 6 years ago

RKE version: v0.1.1

Docker version: (docker version,docker info preferred) docker 1.12.6

Operating system and kernel: (cat /etc/os-release, uname -r preferred) ubuntu-16.04

Type/provider of hosts: (VirtualBox/Bare-metal/AWS/GCE/DO) AWS

cluster.yml file: three node cluster,each node with a single role. so one node -controlplane, node - worker, node -etcd

Steps to Reproduce: Create a cluster and then update the rancher service k8s service image

Results: The kubedns and test pods can get the same ip:

kubectl get pods --all-namespaces -o wide | grep 10.233.66.4
kube-system                   kube-dns-6f7666d48c-6bwxn               3/3       Running   0          10h       10.233.66.4      18.219.114.84
nsone-afterupgrade            pod-test-util-xb2f6                     1/1       Running   0          10h       10.233.66.4      18.219.114.84
AssertionError: Service ClusterIP does not reach pods k8test1.nsone-afterupgrade.svc.cluster.local:
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--
curl: (7) Failed to connect to k8test1.nsone-afterupgrade.svc.cluster.local port 80: Connection refused
command terminated with exit code 7

https://github.com/kubernetes/kubernetes/issues/43910#issuecomment-290777514

moelsayed commented 6 years ago

Confirmed fix with latest master: