google compute engine - Instance Group : remove autoscaling and set number of instances to 0 -

i have requirement in have stop instance group during night hours , restart in morning. there anyway can stop instance group few hours. console can change autoscaling off , set number of instances 0 cant find option api. please suggest

you can use:

gcloud compute instance-groups managed stop-autoscaling name [--zone zone] 

and

gcloud compute instance-groups managed set-autoscaling name \     --max-num-replicas max_num_replicas [--zone zone] 

note stop-autoscaling not bring down number of instances 0 you, need set-autoscaling --max-num-replicas.

the corresponding rest api instancegroupmanagers: resize.