Best way is to make one file per table and not use default which baloons to a huge file and never shrinks when some tables are removed and unused. See https://www.thegeekstuff.com/2016/02/mysql-innodb-file-per-table Some other reference: …

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From /var/log/mariadb/mariadb.log, something like 1150515 12:10:45 InnoDB: Completed initialization of buffer pool 2150515 12:10:45 InnoDB: Fatal error: cannot allocate memory for the buffer pool 3150515 12:10:45 [ERROR] Plugin 'InnoDB' init function returned error. 4150515 12:10:45 [ERROR] Plugin …

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