SysVinit to Systemd Cheatsheet

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This is a document to help system administrators who need to understand what commands in systemd replace their old workflow in SysVinit.

Commands

SystemVinit Command Systemd Command Notes
ls -al /etc/rc.d/init.d systemctl --all Used to list the services that can be started or stopped
chkconfig httpd --list Used to list what levels this service is configured on or off
chkconfig httpd levels 345 on Turn the service on for the next reboot
chkconfig httpd levels 345 off Turn the service off for the next reboot
service httpd start systemctl start httpd.service OR service httpd start Used to start a service (not reboot persistent)
service httpd stop systemctl stop httpd.service OR service httpd stop Used to stop a service (not reboot persistent)
service httpd restart systemctl restart httpd.service OR service httpd restart Used to stop and then start a service
service httpd reload systemctl reload httpd.unit OR service httpd reload When supported, reloads the config file without interrupting pending operations.
service httpd condrestart systemctl reload-or-restart httpd.unit OR systemctl condrestart httpd.unit OR service httpd condrestart when supported restarts if the service is already running.
telinit 3 systemctl isolate runlevel3.target OR telinit 3 Change to multi-user run level. See also: Runlevels
sed s/^id:.*:initdefault:/id:3:initdefault:/ ln -sf /lib/systemd/systemd/multi-user.target /etc/systemd/system/default.target Set to use multi-user runlevel on next reboot. See also: Runlevels

Runlevels

runlevels are used with telinit and on the kernel command line in SystemVinit. With systemd, the following can be used instead.

SystemVinit Runlevel Systemd Target Notes
0 Halt the system.
1, s, single Single user mode.
2, 4 User/sites may define runlevels with sets of packages for these.
3 runlevel3.target, multi-user.target Multi-user, non-graphical. Users can usually login via multiple consoles or via the network.
5 runlevel5.target, graphical.target Multi-user, graphical. Usually has all the services of runlevel 3 plus a graphical login.
6 Reboot