How can I set up a domain name on linode when I use a godaddy subscription domain name? And the corresponding documents?

I am in the godaddy domain name

linode is set
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godaddy
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just how can I set it up to start using it?
my original server already has a domain name
points to / var/www/b/

how do I configure this domain name to point to / var/www/c/?
how to configure it?

Apache linode godaddy ubuntu16.04
Mar.22,2021
  1. point your DNS to your server
  2. if it is an apache server, configure it in apache.conf, and if it is nginx, configure it in nginx.conf
  3. OK

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-42a71b3-600a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-42a71b3-600a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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