For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:miska/openSUSE_Tumbleweed/home:miska.repo
zypper refresh
zypper install ckermit
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:miska/16.0/home:miska.repo
zypper refresh
zypper install ckermit
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:miska/15.6/home:miska.repo
zypper refresh
zypper install ckermit