With your user-data fully built, if you like you can validate it using the Ubuntu cloud-init tool as below – this step is optional, but it’s worth doing to make sure it parses correctly: cloud-init devel schema --config-file my-user-data-file.txt Encoding the data and deploying the template.
Ubuntu Manpage: service - run a System V init script DESCRIPTION service runs a System V init script or systemd unit in as predictable an environment as possible, removing most environment variables and with the current working directory set to /. The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT, or … Get To Know Linux: The /etc/init.d Directory - gHacks Tech Apr 04, 2009
How To Install and Use PostgreSQL on Ubuntu 14.04
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The scripts in /etc/init.d/ are scripts that control services. Controlling means that they take care of starting, stopping and similar actions. They are not automatically executed at startup. Instead, you must assign scripts to runlevels, which is done with the update-rc.d command on Debian-based systems (which Ubuntu is).. For example, to add your supervisor service to all default runlevels
Apr 28, 2014 Ubuntu Cloud Images bionic/ 23-Jul-2020 02:58 - Ubuntu Server 18.04 LTS (Bionic Beaver) daily builds daily/ 24-Feb-2016 21:07 - Daily image builds docs/ 14-Jun-2018 15:01 - eoan/ 22-Jul-2020 20:50 - Ubuntu Server 19.10 (Eoan Ermine) daily builds focal/ 21-Jul-2020 13:09 - Ubuntu Server 20.04 LTS (Focal Fossa) daily builds groovy/ 24-Jul-2020 02:58 - Ubuntu Server 20.10 (Groovy Gorilla) daily builds locator/ 24 GitHub - mknoxnv/ubuntu-slurm: Steps to create a small May 08, 2018