How can kubernetes be used without a cloud environment?

how to apply kubernetes?, which is unlikely to be hosted in the cloud in the traditional financial industry

Mar.29,2021

it would be nice to buy more than three servers. It is not a problem for the financial industry to have three servers.
or buy a high-end, virtual machine mode, which is also very common

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-64f5-1e45f5b-44302.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e45f5b-44302.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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