Mysql8.0 cannot start FEDERATED engine under centos

system environment: mysql8.0.11 installed by centos7x64 via yum HSMig.png

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/etc/my.cnf

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Mar.09,2021

A glance shows that you have misspelled the parameters

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-64f5-1e3c34c-4468b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e3c34c-4468b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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