For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Reki/openSUSE_Tumbleweed/home:Reki.repo
zypper refresh
zypper install nginx-module-echo
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Reki/16.0/home:Reki.repo
zypper refresh
zypper install nginx-module-echo
For 15.7 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Reki/15.7/home:Reki.repo
zypper refresh
zypper install nginx-module-echo
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Reki/15.6/home:Reki.repo
zypper refresh
zypper install nginx-module-echo