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I have 6 nodes in our data center of which 3 node also act as seed nodes.I was planning to remove 3 nodes from rack2 and also reduce seed node count to two. With "nodetool decommission" we can remove nodes but is there any extra steps involve in removing seed nodes. 

UN  10.10.1.56  339.96 MiB  1            ?         rack1
UN  10.10.1.46  334.72 MiB  1            ?         rack1
UN  10.10.2.76  307.72 MiB  1            ?         rack2
UN  10.10.2.66  296.15 MiB  1            ?         rack2
UN  10.10.2.86  316.89 MiB  1            ?         rack2
UN  10.10.1.36  375.69 MiB  1            ?         rack1
Sreeraju V
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1 Answers1

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You need to update seed list on nodes before decomissioning seed node - change list, optionally do the rolling restart one node at time, or in the new versions use nodetool reloadseeds

Alex Ott
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