Convert SysV Init scripts to Systemd Unit File

sysv.init.script.to.systemd.unit.file.md

Let's say you have a SysV Init Script named foo

1. Copy the file to /etc/init.d/foo

2. Enable the SysV service: chkconfig --add foo

3. Enable the SysV service: chkconfig foo on

4. Start the service: service foo start. After this, systemd-sysv-generator will generate this file /run/systemd/generator.late/foo.service, copy this file to /etc/systemd/system by running: cp /run/systemd/generator.late/foo.service /etc/systemd/system/foo.service

5. Edit /etc/systemd/system/foo.service by running systemctl edit foo.service, add in the following line to foo.servie (this makes the service installable)

   [Install]
   WantedBy=multi-user.target
   

6. Enable the service: systemd enable foo.service

7. (Optional) You can then remove the SysV script by running chkconfig foo off && chkconfig --del foo