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add support for cluster downsize #213

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add support for cluster downsize #213

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Commits on Jan 10, 2024

  1. add support for cluster downsize 

    we do this by way of adding backoffLimitPerIndex and setting to 0,
meaning that a pod (follower broker) cannot be recreated when the
pod is killed. We might want to do this for autoscaling. See
the examples/elasticity/downsize for details.

Signed-off-by: vsoch <[email protected]>
    @vsoch
    vsoch committed Jan 10, 2024
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  2. ensure that worker exits with 0 so pod cleans up 

    If we do a flux drain <node> <reason> and then flux overlay disconnect <node>,
the broker should exit cleanly (meaning exit status 0) and then the pod will
also complete, and this means any autoscaler can clean it up too. No need for
us to issue a pod kill or similar command.

Signed-off-by: vsoch <[email protected]>
    @vsoch
    vsoch committed Jan 10, 2024
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