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https://issues.apache.org/jira/browse/AMBARI-2976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13746105#comment-13746105
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Antonenko Alexander commented on AMBARI-2976:
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+1 for the patch
> During agent registration show list of agents that are registered but do not
> correspond to any hostnames that are provided by the user
> --------------------------------------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-2976
> URL: https://issues.apache.org/jira/browse/AMBARI-2976
> Project: Ambari
> Issue Type: Improvement
> Components: client
> Affects Versions: 1.2.5
> Reporter: Andrii Babiichuk
> Assignee: Andrii Babiichuk
> Fix For: 1.4.1
>
> Attachments: AMBARI-2976.patch
>
>
> It is not uncommon to have a mismatch between the hostname provided by the
> user (for hosts that are member of the cluster) and the hostname used by the
> agent to register itself. Currently, FE shows the list host, out of the list
> provided by the user, that registered or failed registration. It will be
> useful to also show the list of hosts that have registered but do not
> correspond to any of the hostnames supplied by the user. This will help in
> debugging situations where there is a hostname mismatch.
> Details:
> In Confirm Hosts page, add a warning message section with a link labeled
> "There are X other registered hosts" if there are such hosts. This should
> appear above the Host Checks message area.
> "Other registered hosts" are defined as hosts that appear when we call
> /api/v1/hosts but do not belong to the current list of hosts provided by the
> user thru the UI or hosts that already belong to the cluster (ones that show
> up /ap1/v1/<cluster>/hosts).
> If the count of such hosts is 0, we do not show this warning message.
> Popup Title: "X Other Registered Hosts" where X is the number of such hosts.
> Popup Body: "These are the hosts that have registered with the server, but do
> not appear in the list of hosts that you are adding.", followed by a list of
> hostnames, one per line.
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