Sandeep Kumar created AMBARI-26658:
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             Summary: Ambari Web is reachable before a cluster is created, 
showing an empty UI instead of the install wizard
                 Key: AMBARI-26658
                 URL: https://issues.apache.org/jira/browse/AMBARI-26658
             Project: Ambari
          Issue Type: Story
            Reporter: Sandeep Kumar
            Assignee: Sandeep Kumar


When Ambari has no cluster created, navigating to any /main/** route loads the 
main
Ambari Web UI instead of directing the user to create a cluster. Every screen 
renders
empty (no services, hosts, or metrics), and the install wizard is only 
reachable by
typing its URL directly.

Steps to reproduce
1. Install and start ambari-server. Do not create a cluster.
2. Log in as a user with AMBARI.ADD_DELETE_CLUSTERS (e.g. admin).
3. Browse to /#/main/dashboard/metrics.

Expected
The user cannot remain in the main UI without a cluster. With no cluster they 
are sent
to the admin view to create one; if a cluster exists but is not yet INSTALLED 
they
resume the install wizard. This is how the Ember UI behaves - its main route 
redirects
to the installer rather than rendering a cluster-less UI.

Actual
The main UI renders with no cluster behind it. All pages are empty and the user 
is
left with no path to the install wizard.



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