Locate the IP address of your Vultr VPS and login as the root user.
ssh root@server
Change your hostname to a different name of your choosing. For example:
hostname server01
/etc/hosts
Open the /etc/hosts
file with your favorite text editor. For example:
nano /etc/hosts
Change the first line and replace your old hostname with the new one. Save the file and exit the editor.
/etc/sysconfig/network
This file also contains your hostname. Open the /etc/sysconfig/network
file with your favorite text editor.
Change HOSTNAME=vultr
to your desired hostname. For example: HOSTNAME=server01
.
Run the following command to check your new hostname:
hostname
The new hostname will be displayed in your ssh terminal.
Visit https://my.vultr.com/, then navigate to your VPS. Click on the IPv4 tab. You will see an "Update" button in the "Reverse DNS" column. Click this button to update the reverse DNS address. By default it will read:
x.x.x.x.vultr.com
It is common to replace x.x.x.x.vultr.com
with the DNS name of your server, which may be related to its hostname.
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