For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:lee_duncan/openSUSE_Tumbleweed/home:lee_duncan.repo
zypper refresh
zypper install open-iscsi
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:lee_duncan/openSUSE_Factory/home:lee_duncan.repo
zypper refresh
zypper install open-iscsi
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:lee_duncan/15.4/home:lee_duncan.repo
zypper refresh
zypper install open-iscsi
For 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:lee_duncan/15.3/home:lee_duncan.repo
zypper refresh
zypper install open-iscsi