Which node to install the Cloud-AWS plugin

I have an Elasticsearch cluster with 5 data nodes, 1 master node and another client node which acts as a load balancer.

To backup all my data into a s3 bucket of mine, I installed the official cloud-aws plugin. I managed to do so on my local machine(single node) with the snapshot & restore API.

Now, my question is on which nodes should I install the plugin when I move to production. Must I install it on all 7 of my nodes or just the master node will suffice?

Thanks !!

Install on all nodes (reference: https://www.elastic.co/guide/en/elasticsearch/plugins/master/cloud-aws.html).