For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/systemsmanagement:cockpit/openSUSE_Tumbleweed/systemsmanagement:cockpit.repo
zypper refresh
zypper install cockpit
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/systemsmanagement:cockpit/openSUSE_Factory_ARM/systemsmanagement:cockpit.repo
zypper refresh
zypper install cockpit
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/systemsmanagement:cockpit/openSUSE_13.2/systemsmanagement:cockpit.repo
zypper refresh
zypper install cockpit
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/systemsmanagement:cockpit/15.6/systemsmanagement:cockpit.repo
zypper refresh
zypper install cockpit