Cody Maloney created MESOS-3177:
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Summary: Make Mesos own configuration of roles/weights
Key: MESOS-3177
URL: https://issues.apache.org/jira/browse/MESOS-3177
Project: Mesos
Issue Type: Improvement
Components: master, slave
Reporter: Cody Maloney
All roles and weights must currently be specified up-front when starting Mesos
masters currently. In addition, they should be consistent on every master,
otherwise unexpected behavior could occur (You can have them be inconsistent
for some upgrade paths / changing the set).
This makes it hard to introduce new groups of machines under new roles
dynamically (Have to generate a new master configuration, deploy that, before
we can connect slaves with a new role to the cluster).
Ideally an administrator can manually add / remove / edit roles and have the
settings replicated / passed to all masters in the cluster by Mesos.
Effectively Mesos takes ownership of the setting, rather than requiring it to
be done externally.
In addition, if a new slave joins the cluster with an unexpected / new role
that should just work, making it much easier to introduce machines with new
roles. (Policy around whether or not a slave can cause creation of a new role,
a given slave can register with a given role, etc. is out of scope, and would
be controls in the general registration process).
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