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https://issues.apache.org/jira/browse/MESOS-5911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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haosdent reassigned MESOS-5911:
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Assignee: haosdent
> Webui redirection to leader in browser does not work
> ----------------------------------------------------
>
> Key: MESOS-5911
> URL: https://issues.apache.org/jira/browse/MESOS-5911
> Project: Mesos
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Jacob Janco
> Assignee: haosdent
> Priority: Blocker
> Labels: webui
>
> We deployed 1.0.0-rc4 in a small test cluster with 3 masters/5 agents.
> Redirection to master curling for state.json returned the expected 307,
> however, in browser (chrome/safari/firefox), redirection failed with:
> {code}
> XMLHttpRequest cannot load <master_url_1>:5050/master/state. No
> 'Access-Control-Allow-Origin' header is present on the requested resource.
> Origin '<master_url_2>:5050' is therefore not allowed access.
> {code}
> This is the patch that introduced the redirect on /state (and HTTP calls):
> https://reviews.apache.org/r/34646
> The issue is that before this change, the server side does not redirect, the
> web UI controller.js decides from the content of the state.json which leader
> to redirect and then invoke redirection itself. Browsers allow this but not
> the server side initiated redirect without 'Access-Control-Allow-Origin'
> header?
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