Alan Conway created QPID-6035:
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Summary: 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
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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