Replication on a 3 nodes cluseter

Hello community!
I have a 3 nodes cluster wich was 1master only 2 data&master. Today i made all nodes master&data, and i have seen that the shard .opendistro_security is replicated on all nodes(of course 1 primary and 2 replicas). So, i want that all my indices, to be replicated across all nodes, like the shard above, does the cross-cluster replication solve this issue? If so i encounterd an error while trying to activate it, please see below:

{
“error” : {
“root_cause” : [
{
“type” : “illegal_argument_exception”,
“reason” : “this node does not have the remote_cluster_client role”
}
],
“type” : “illegal_argument_exception”,
“reason” : “this node does not have the remote_cluster_client role”
},
“status” : 400
}

PS: I did not find a similar topic, so i created this. Sorry if it is reposted.
Thanks,

Cross cluster replication is useful when you want to copy indices to a different cluster.
For your use case, try setting the replica using number_of_replicas:2 in index setting: Update settings - OpenSearch documentation