There is the option to explicitly set DefaultTimeoutStartSec and DefaultTimeoutStopSec per systemd service.
If you don’t specify it in a service file, the default values from /etc/systemd/system.conf (both set to 90s) will be used, so you can change those values to 30s, too, to affect all services (that don’t have their limit set explicitly) globally.
There is the option to explicitly set
DefaultTimeoutStartSecandDefaultTimeoutStopSecper systemd service.If you don’t specify it in a service file, the default values from
/etc/systemd/system.conf(both set to 90s) will be used, so you can change those values to 30s, too, to affect all services (that don’t have their limit set explicitly) globally.