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https://issues.apache.org/jira/browse/AMBARI-15419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Hurley updated AMBARI-15419:
-------------------------------------
Attachment: AMBARI-15419.patch
> After EU Some Services Fail To Start Because of Missing JKS Files
> -----------------------------------------------------------------
>
> Key: AMBARI-15419
> URL: https://issues.apache.org/jira/browse/AMBARI-15419
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.0.0
> Reporter: Jonathan Hurley
> Assignee: Jonathan Hurley
> Priority: Critical
> Fix For: 2.2.2
>
> Attachments: AMBARI-15419.patch
>
>
> During an upgrade, configuration files from the old stack are not copied to
> the new configuration folders created using {{conf-select}}. This means that
> files which Ambari does not track, are never included in the new
> configuration directories.
> This is what happens on a clean install:
> {noformat}
> /etc/foo/conf (physical conf files placed here)
> /usr/hdp/<version>/foo/conf -> /etc/foo/conf
> {noformat}
> Ambari then uses {{conf-select}} to change this:
> {noformat}
> /etc/foo/conf.backup (contents of original /etc/foo/conf folder)
> /etc/foo/conf -> /usr/hdp/<version>/foo/conf
> /usr/hdp/<version>/foo/conf -> /etc/foo/<version>/0
> /etc/foo/<version>/0 (physical conf files placed here)
> {noformat}
> But in this scenario, we make sure to seed {{/etc/foo/<version>/0}} with the
> files which were in {{/etc/foo/conf}} originally, including files which we
> don't track. This is to prevent files, like JKS keystores, from being lost.
> *Now the upgrade scenario:*
> ----
> If you already have {{/usr/hdp/2.3.0.0}} installed, that means that you have
> {{/etc/foo/conf}} and all associated files already on the disk. When you
> distribute HDP 2.4, {{/usr/hdp/2.4.0.0}} is created. However, it cannot
> overwrite any existing configurations since you haven't upgraded yet. So, it
> basically does nothing with the configurations. We invoke {{conf-select}} to
> create {{/etc/foo/2.4.0.0/0}}, but it is never seeded with any values from
> {{/etc/foo/2.3.0.0/0}}.
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