{"action":"closed","issue":{"url":"https://api.github.com/repos/kubernetes/kubernetes/issues/14533","labels_url":"https://api.github.com/repos/kubernetes/kubernetes/issues/14533/labels{/name}","comments_url":"https://api.github.com/repos/kubernetes/kubernetes/issues/14533/comments","events_url":"https://api.github.com/repos/kubernetes/kubernetes/issues/14533/events","html_url":"https://github.com/kubernetes/kubernetes/issues/14533","id":108243835,"number":14533,"title":"DNS does't work properly from different namespaces","user":{"login":"ntquyen","id":1430058,"avatar_url":"https://avatars.githubusercontent.com/u/1430058?v=3","gravatar_id":"","url":"https://api.github.com/users/ntquyen","html_url":"https://github.com/ntquyen","followers_url":"https://api.github.com/users/ntquyen/followers","following_url":"https://api.github.com/users/ntquyen/following{/other_user}","gists_url":"https://api.github.com/users/ntquyen/gists{/gist_id}","starred_url":"https://api.github.com/users/ntquyen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ntquyen/subscriptions","organizations_url":"https://api.github.com/users/ntquyen/orgs","repos_url":"https://api.github.com/users/ntquyen/repos","events_url":"https://api.github.com/users/ntquyen/events{/privacy}","received_events_url":"https://api.github.com/users/ntquyen/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/kubernetes/kubernetes/labels/area/networking","name":"area/networking","color":"006b75"},{"url":"https://api.github.com/repos/kubernetes/kubernetes/labels/priority/P2","name":"priority/P2","color":"fbca04"},{"url":"https://api.github.com/repos/kubernetes/kubernetes/labels/team/cluster","name":"team/cluster","color":"d2b48c"}],"state":"closed","locked":false,"assignee":{"login":"ArtfulCoder","id":1220660,"avatar_url":"https://avatars.githubusercontent.com/u/1220660?v=3","gravatar_id":"","url":"https://api.github.com/users/ArtfulCoder","html_url":"https://github.com/ArtfulCoder","followers_url":"https://api.github.com/users/ArtfulCoder/followers","following_url":"https://api.github.com/users/ArtfulCoder/following{/other_user}","gists_url":"https://api.github.com/users/ArtfulCoder/gists{/gist_id}","starred_url":"https://api.github.com/users/ArtfulCoder/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ArtfulCoder/subscriptions","organizations_url":"https://api.github.com/users/ArtfulCoder/orgs","repos_url":"https://api.github.com/users/ArtfulCoder/repos","events_url":"https://api.github.com/users/ArtfulCoder/events{/privacy}","received_events_url":"https://api.github.com/users/ArtfulCoder/received_events","type":"User","site_admin":false},"milestone":null,"comments":33,"created_at":"2015-09-25T01:10:22Z","updated_at":"2015-09-30T17:49:55Z","closed_at":"2015-09-30T17:49:55Z","body":"I have only one DNS server running in namespace `default`, and it works correctly from the same namespace\r\n```\r\n$ kubectl get po --namespace=default\r\nNAME             READY     STATUS    RESTARTS   AGE\r\ncurlpod          1/1       Running   2          2d\r\nkube-dns-1gvwb   3/3       Running   0          2d\r\n\r\n$ kubectl get se --namespace=default\r\nNAME         LABELS                                                              SELECTOR           IP(S)         PORT(S)\r\nkube-dns     k8s-app=kube-dns,kubernetes.io/cluster-service=true,name=kube-dns   k8s-app=kube-dns   10.100.0.10   53/UDP\r\n                                                                                                                  53/TCP\r\nkubernetes   component=apiserver,provider=kubernetes                             <none>             10.100.0.1    443/TCP\r\n\r\n$ kubectl exec curlpod --namespace=default -- nslookup svc-rethinkdb-driver.development\r\nServer:    10.100.0.10\r\nAddress 1: 10.100.0.10\r\n\r\nName:      svc-rethinkdb-driver.development\r\nAddress 1: 10.100.137.137\r\n```\r\n\r\nI don't have any DNS server in other namespace. And now, from namespace `development`, resolving service name doesn't work: (I have `curlpod` running in both namespaces)\r\n\r\n```\r\n$ kubectl exec curlpod --namespace=development -- nslookup svc-rethinkdb-driver.development\r\nServer:    10.100.0.10\r\nAddress 1: 10.100.0.10\r\n\r\nnslookup: can't resolve 'svc-rethinkdb-driver.development'\r\nerror: Error executing remote command: Error executing command in container: Error executing in Docker Container: 1\r\n```\r\n\r\nEven more, it is so weird that I'm sure it worked before, until today. I'm having some application still up and running in `development` and well connected  to `svc-rethinkdb-driver`. But I cannot deploy a new one anymore.\r\n\r\nNote that I didn't make any change to the kubernetes cluster since a few days.\r\n\r\nWhat I have to do to troubleshoot this? Are there any logs? Thanks for any help.\r\n"}}