In this section, we will explore the traditional Linux/Unix service deployment. We'll do this with a virtual Ubuntu instance running on our laptop. The goal is to create background processes that automatically start during boot-up, restart if the process crashes, and allow us to monitor log files and system state.
Traditional Linux/Unix server application deployment uses an init script to manage background processes. They are to start every time the system boots, and cleanly shut down when the system is halted. The name "init script" comes from the name of the first process launched in the system, whose traditional name is /etc/init. The init scripts are usually stored in /etc/init.d, and are typically simple shell scripts. Some operating systems use other process managers, such as upstart, systemd, or launchd, while following the same model. While it's a simple model, the specifics of this vary widely from one operating...
