Install on Premise
The minimal server node configuration:
1x SSL certificate with a private key for your own domain (for production)
1x manager server
Nx agent servers
1x PostgreSQL server
1x Redis server
1x etcd cluster
For HA setup, it should consist of 5 separate server nodes.
1x network-accessible storage server (NAS) with NFS/SMB mounts
All should be in the same private network (LAN).
Depending on the cluster size, several service/database daemons may run on the same physical server.