InnoDB很强大，不过VPS一般内存不大，用这个比较吃内存。如果你不用InnoDB，可以把它禁用。 方法：新建一个文件：/etc/mysql/conf.d/noinno.cnf，内容为： [mysqld] skip-innodb default-storage-engine=MyISAM default-tmp-storage-engine=MyISAM loose-innodb-trx=0 loose-innodb-locks=0 loose-innodb-lock-waits=0 loose-innodb-cmp=0 loose-innodb-cmp-per-index=0 loose-innodb-cmp-per-index-reset=0 loose-innodb-cmp-reset=0 loose-innodb-cmpmem=0 loose-innodb-cmpmem-reset=0 loose-innodb-buffer-page=0 loose-innodb-buffer-page-lru=0 loose-innodb-buffer-pool-stats=0 loose-innodb-metrics=0 loose-innodb-ft-default-stopword=0 loose-innodb-ft-inserted=0 loose-innodb-ft-deleted=0 loose-innodb-ft-being-deleted=0 loose-innodb-ft-config=0 loose-innodb-ft-index-cache=0…