MySQL 重启提示超出可打开文件数限制|Buffered warning: Changed limits: max_open_files: 1024

再看看 MySQL 的日志，发现原来超过限制了。

190314 11:18:08 mysqld_safe mysqld restarted
2019-03-14 11:18:09 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2019-03-14 11:18:09 0 [Note] /usr/sbin/mysqld (mysqld 5.6.34) starting as process 16180 ...
2019-03-14 11:18:09 16180 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (requested 5000)

2019-03-14 11:18:09 16180 [Warning] Buffered warning: Changed limits: table_open_cache: 431 (requested 2000)

既然看到问题，先网上搜搜别人怎么解决的。

都在说修改系统的文件数限制，ulimit -a 一看，65535，对的呀。

怪事，MySQL 也有限制，看一下

show variables like ‘%files%‘;

果然是 1024

修改修改

重启 MySQL

MySQL 重启提示超出可打开文件数限制|Buffered warning: Changed limits: max_open_files: 1024

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