This set of scripts creates a Google Cloud Container Engine cluster that routes all outbound internet traffic. Traffic heading for the kubernetes master is routed at a higher priority through the default internet gateway. through a NAT instance.

1. Creates a network
2. Creates a subnet for the cluster
3. Creates a subnet for the nat instance
4. Creates a NAT compute instance
5. Creates Firewall rules for NAT instance
6. Creates the GKE cluster in the cluster's subnet created from step 2 with tag route-through-nat
7. Creates the route from the cluster to the master for instances with tag, route-through-nat
8. Creates the NAT route from the cluster to the NAT for all destinations at a lower priority than the master route above for instances with tag route-through-nat

1. Updated gcloud sdk
2. Updated kubectl cli
3. A Project in Google Cloud in which you want to deploy this cluster
4. Authenticated to google cloud

$ git clone https://www.github.com/johnlabarge/gke-nat-example.git
$ cd gke-nat-example
$ ./create

This also runs a quick test for you by

1. installing curl on the machine
2. curling a well known website
3. copying the captured traffic (tcpdump) logs from the Nat computer to the local directory.

$ ./delete