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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-6035) HA clearly distinguish qpid-ha commands intended for cluster manager.
Date Tue, 02 Sep 2014 16:23:21 GMT

    [ https://issues.apache.org/jira/browse/QPID-6035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14118310#comment-14118310
] 

ASF subversion and git services commented on QPID-6035:
-------------------------------------------------------

Commit 1622057 from [~aconway] in branch 'qpid/trunk'
[ https://svn.apache.org/r1622057 ]

QPID-6035: HA fix bug in qpid-ha, --help does not show help.

> HA clearly distinguish qpid-ha commands intended for cluster manager.
> ---------------------------------------------------------------------
>
>                 Key: QPID-6035
>                 URL: https://issues.apache.org/jira/browse/QPID-6035
>             Project: Qpid
>          Issue Type: Improvement
>          Components: C++ Clustering
>    Affects Versions: 0.30
>            Reporter: Alan Conway
>            Assignee: Alan Conway
>             Fix For: 0.31
>
>
> The qpid-ha tool has two roles. It provides many commands for system administrators to
monitor a cluster. It also provides the 'promote' command that should only be used by a cluster
manager.
> Qpid relies on an external cluster manager (usually rgmanager) to start and stop brokers
and to ensure that only one  broker is ever primary. This only works if rgmanager is the only
agent that uses "qpid-ha promote". Otherwise we can end up with multiple primaries and cluster
malfunction.
> The difference between qpid-ha commands for system administrators vs. for cluster managers
is not sufficiently clear. A sysadmin could make the mistake of thinking it is Ok to promote
a broker without going through rgmanager. This needs to be more clear to avoid accidents.



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