On my last post, I explained how I am experimenting with Google Compute Engine (GCE) to host my backup DNS service and my post about configuring mailjet as an exim mail relay.
I have run into a few issues on Google Compute Engine, it looks like every time the instance gets a DHCP offer the hostname of the machine will get reset to the internal hostname, overriding whatever setting you may have set… this is bad news for a server that needs to respond to DNS settings.
After a few hours of digging and testing out different approaches, including trying to setup a DHCP hook to run the “hostname” linux command I came across documentation from Google talking about “custom metadata”.
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