I am installing X-Pack on a 3 node cluster and am now at the step to generate the node certificates based on the X-Pack installation documentation.
Is it necessary to create a certificate authority (CA) on every node of the cluster or just on the first node?
There is also a step where the .p12 certificate should be copied into a /config/certs folder. Does this .p12 certificate need to be generated on each node or can I simply copy the certificate file generated on the first node into the other nodes in the cluster?