``` # echo "deb https://repo.gluu.org/ubuntu/ bionic main" > /etc/apt/sources.list.d/gluu-repo.list # curl https://repo.gluu.org/ubuntu/gluu-apt.key | apt-key add - # apt update # apt install gluu-server # apt-mark hold gluu-server ``` Per: [https://gluu.org/docs/gluu-server/4.2/installation-guide/install-ubuntu/](https://gluu.org/docs/gluu-server/4.2/installation-guide/install-ubuntu/)