People who can use docker containers : here is the automated build for the daemon (node). I will help the network too. The trimmed image based on ubuntu 16.04 takes only 136MB. Running a node at this time need at least 2.2Go free on hard drive to store the blockchain but it will grow. For example, monero blockchain use today 33Go
Seems i ask this with
Windozxpert 
Did you have any tutorials for CentOS OS? or this will be same cuz both linux based?
Did you know how many bandwidth used by node ? Should i connect node to other nodes or to "IRD network". How this works ?
docker should be available on centOS (
https://docs.docker.com/engine/installation/linux/docker-ce/centos), in that case, just run with your right ports.
docker run -e "TIMEZONE"="Europe/Paris" -p my_local_p2p_port:12007 --p my_local_rpc_port:13007 -e "P2P_BIND_IP"="1.2.3.4 -e "P2P_BIND_PORT"="my_local_p2p_port" -e "P2P_EXTERNAL_PORT"="12007" -e "RPC_BIND_IP"="5.6.7.8 -e "RPC_BIND_PORT"="my_local_rpc_port" -e "LOG_LEVEL"="4" -e "LOG_FILE"="/data/iridium.log" steevebrush/iridiumd-container
look there, it's written :
https://hub.docker.com/r/steevebrush/iridiumd-containerabout bandwidth : after the download of the blockchain (2,5Go), bandwidth is very low ! a block is discover every 5 minutes at this time. the node connect automatically to others node. the version compiled is the latest with new seeds.
How this works ? simple : the daemon stock the blockchain, share and confirm (or infirme) the validity of a block.
so more nodes = faster validation and safer transactions.
may be a reward can be imagined for people running nodes, it's a community, so why not asking ?