How to use holer to access the intranet database from the external network?

the database system is installed on the host in the local area network, which can only be accessed and used in the local area network. How to use holer to access the database in the internal network from the external network?
https://github.com/wisdom-pro.

Nov.12,2021

found an article on how to access the
https://yq.aliyun.com/article.

of the intranet database from the external network.
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-64f5-7c3619-1667c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-7c3619-1667c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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