1. Login to your SolusVM Control Panel.
2. If you have multiple VPS, select the appropriate one.
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3. Scroll down, and under the "Hostname" tab, rnter your hostname in text box under "New Hostname" and click on "Change".
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4. Reboot is not required because the hostname is only changed for reference purposes.
Some example hostnames:
server1.example.com
hostingserver.example.com