chkconfig tgtd on
systemctl start tgtd
systemct stop tgtd
systemctl status tgtd.service

systemctl status iscsi.service

Discovery:

iscsiadm --m discovery -t sendtargets --p 192.168.122.10 --discover

Login:

iscsiadm -m node --login

iscsiadm -m session -o show
tcp: [1] 10.53.0.10:3260,1 iqn.2017-03.cz.dragon.ovirt:ovirtengine (non-flash)
tcp: [2] 10.53.0.201:3260,1 iqn.2017-03.cz.dragon.ovirt.fudi-sn1:10T (non-flash)
tcp: [5] 10.53.0.202:3260,1 iqn.2017-03.cz.dragon.ovirt.fudi-sn2:4T-2Tssd (non-flash)