For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:database:percona/openSUSE_Tumbleweed/server:database:percona.repo
zypper refresh
zypper install percona-node_exporter
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:database:percona/16.0/server:database:percona.repo
zypper refresh
zypper install percona-node_exporter
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:database:percona/15.6/server:database:percona.repo
zypper refresh
zypper install percona-node_exporter