Identify Outbound IP Addresses on GKE

This section will walk you through identifying the outbound IP addresses that applications running on your GKE cluster will end up using for outbound connections.

What You’ll Need

Procedure

  1. Find the public IPs of the worker nodes of your GKE cluster, if any:

    root@rok-tools:~# kubectl get nodes \ > -o jsonpath='{range .items[*]}'\ > '{.status.addresses[?(@.type=="ExternalIP")].address}{"\n"}{end}' \ > | grep . \ > | sed -e 's|$|/32|' 198.51.100.100/32 203.0.113.100/32 192.0.2.100/32

    Important

    If your cluster scales up or down you have to re-run this since the above list will change.

Summary

You have successfully identified the outbound IP addresses in your GKE cluster.

What’s Next

The next step is to configure your deployment to allow access from trusted CIDRs.

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