{"action":"created","issue":{"url":"https://api.github.com/repos/kubernetes/kubeadm/issues/716","repository_url":"https://api.github.com/repos/kubernetes/kubeadm","labels_url":"https://api.github.com/repos/kubernetes/kubeadm/issues/716/labels{/name}","comments_url":"https://api.github.com/repos/kubernetes/kubeadm/issues/716/comments","events_url":"https://api.github.com/repos/kubernetes/kubeadm/issues/716/events","html_url":"https://github.com/kubernetes/kubeadm/issues/716","id":300171083,"number":716,"title":"Should Kubeadm must be able to connect to dl.k8s.io","user":{"login":"mdianjun","id":12122541,"avatar_url":"https://avatars2.githubusercontent.com/u/12122541?v=4","gravatar_id":"","url":"https://api.github.com/users/mdianjun","html_url":"https://github.com/mdianjun","followers_url":"https://api.github.com/users/mdianjun/followers","following_url":"https://api.github.com/users/mdianjun/following{/other_user}","gists_url":"https://api.github.com/users/mdianjun/gists{/gist_id}","starred_url":"https://api.github.com/users/mdianjun/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mdianjun/subscriptions","organizations_url":"https://api.github.com/users/mdianjun/orgs","repos_url":"https://api.github.com/users/mdianjun/repos","events_url":"https://api.github.com/users/mdianjun/events{/privacy}","received_events_url":"https://api.github.com/users/mdianjun/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2018-02-26T09:50:57Z","updated_at":"2018-04-06T20:18:05Z","closed_at":null,"author_association":"NONE","body":"What does kubeadm do when upgrading plan?  \r\n\r\n```\r\n[root@a02-r12-i187-2 bin]# ./kubeadm upgrade plan \r\n[preflight] Running pre-flight checks.\r\n[upgrade] Making sure the cluster is healthy:\r\n[upgrade/config] Making sure the configuration is correct:\r\n[upgrade/config] Reading configuration from the cluster...\r\n[upgrade/config] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -oyaml'\r\n[upgrade] Fetching available versions to upgrade to\r\n[upgrade/versions] Cluster version: v1.8.4\r\n[upgrade/versions] kubeadm version: v1.9.3\r\n[upgrade/versions] Latest stable version: v1.9.3\r\n[upgrade/versions] FATAL: grpc: timed out when dialing\r\n```\r\n\r\nMy host couldn't connect to dl.k8s.io, so I setup a nginx server as dl.k8s.io, but create only a file /release/stable.txt whose content is \"v1.9.3\", then kubeadm will connect to the nginx server and get latest stable version v1.9.3. However,  another error appears: grpc: timed out when dialing. What should I do? Should kubeadm must be able to connect to dl.k8s.io?\r\nIs there any workaround to solve this?"},"comment":{"url":"https://api.github.com/repos/kubernetes/kubeadm/issues/comments/379365642","html_url":"https://github.com/kubernetes/kubeadm/issues/716#issuecomment-379365642","issue_url":"https://api.github.com/repos/kubernetes/kubeadm/issues/716","id":379365642,"user":{"login":"timothysc","id":169553,"avatar_url":"https://avatars0.githubusercontent.com/u/169553?v=4","gravatar_id":"","url":"https://api.github.com/users/timothysc","html_url":"https://github.com/timothysc","followers_url":"https://api.github.com/users/timothysc/followers","following_url":"https://api.github.com/users/timothysc/following{/other_user}","gists_url":"https://api.github.com/users/timothysc/gists{/gist_id}","starred_url":"https://api.github.com/users/timothysc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/timothysc/subscriptions","organizations_url":"https://api.github.com/users/timothysc/orgs","repos_url":"https://api.github.com/users/timothysc/repos","events_url":"https://api.github.com/users/timothysc/events{/privacy}","received_events_url":"https://api.github.com/users/timothysc/received_events","type":"User","site_admin":false},"created_at":"2018-04-06T20:18:04Z","updated_at":"2018-04-06T20:18:04Z","author_association":"OWNER","body":"/assign @detiber \r\n/cc @liztio \r\nlet's chat more about the air-gapped upgrade scenarios "}}
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