I have 7 node Apache Cassandra 3.11.6 running in Production.
As it is recommended to run nodetool repair -pr once every gc_grace_seconds, do I have to run this command on all nodes?
As well as can I run this command on multiple nodes at a given time? Like, if I run this on 3 nodes at a single time, then another 3 nodes and so on.
Also, is it mandatory to start with Seed node or can I take any one node from cluster to begin with?