Google Compute Engine: how to set hostname permanently?

Question

How do I set the hostname of an instance in GCE permanently? I can set it via hostname,but after reboot it is gone again.

I tried to feed in metadata (hostname:f.q.d

Answer 1

I was lucky to set hostname at GCE running CentOS. Source: desantolo.com

1. Click EDIT on your instance
2. Go to "Custom metadata" section
3. Add hostname + your.hostname.tld (change "your.hostname.tld" to your actual hostname
4. run curl --silent "http://metadata.google.internal/computeMetadata/v1/instance/attributes/hostname" -H "Metadata-Flavor: Google"
5. run sudo env EDITOR=nano crontab -e to edit crontab
6. add line @reboot hostname $(curl --silent "http://metadata.google.internal/computeMetadata/v1/instance/attributes/hostname" -H "Metadata-Flavor: Google")
7. On your keyboard Ctrl + X
8. On your keyboard hit Y
9. On your keyboard hit Enter
10. run reboot
11. after system rebooted, run hostname and see if your changes applied

Good luck!