Setup nodejs and mongodb instances on google compute engine

GCE_node_mongodb_setup.sh

ssh to node server
sudo apt-get update
sudo apt-get install git nodejs npm supervisor

ssh to mongodb server
sudo vi /etc/mongod.conf
change binip to 0.0.0.0

on dev terminal
gcloud compute firewall-rules create default-allow-mongo \
    --allow tcp:27017 \
    --source-ranges 0.0.0.0/0 \
    --target-tags mongodb \
    --description "Allow mongodb access to all IPs"
    
don't forget to add "mongodb" tag to mongodb instance on GCE console.