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How to migate a Akka cluster without stopping service

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I started a ODL(opendaylight) cluster with the following akka config:

So, the nodes(11.128.83.43, 11.128.83.33, 11.128.83.32) make up a cluster, 11.128.83.43 is member-1, 11.128.83.33 is member-2 and 11.128.83.32 is member-3. these days I want to replace the origin nodes with three new nodes(11.128.83.41, 11.128.83.48, 11.128.83.49 ) ,

My approach is to expand the cluster into six nodes(11.128.83.43, 11.128.83.33, 11.128.83.32, 11.128.83.41, 11.128.83.48, 11.128.83.49 ) first, and the next step I will shutdown the old nodes(11.128.83.43, 11.128.83.33, 11.128.83.32), the remaining nodes will be the new. so i’m wandering if the akka will allow me to update and reload the config without shutdown the cluster service?

I searched some akka docs, there is no related anwser

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