Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:infrastructure:monitoring/openSUSE_Tumbleweed/openSUSE:infrastructure:monitoring.repo
zypper refresh
zypper install golang-github-prometheus-alertmanager
Para 16.0 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:infrastructure:monitoring/16.0/openSUSE:infrastructure:monitoring.repo
zypper refresh
zypper install golang-github-prometheus-alertmanager
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:infrastructure:monitoring/15.6/openSUSE:infrastructure:monitoring.repo
zypper refresh
zypper install golang-github-prometheus-alertmanager