System has not been booted with systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is downSystem has not been booted with systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is down code example

Example: System has not been booted with systemd as init system (PID 1). Can't operate

sudo systemctl start redis

use:

sudo /etc/init.d/redis start