[mysql] Buffered warning: Could not increase number of max_open_files to more than 1024 on centos
OS : CentOS7 MySQL : install rpm package from mysql official repository 1. mysql error log [Warning] Buffered warning: Could not increase number of max_open_files to more than 1024 (request: 16384) [Warning] Buffered warning: Changed limits: max_connections: 214 (requested 3000) [Warning] Buffered warning: Changed limits: table_cache: 400 (requested 2048) 2. modify service file file path : /usr/lib/systemd/system/mysqld.service add LimitNOFILE=163840 LimitNPROC=163840 3. reload # systemctl daemon-reload for this error message… Warning: mysqld.service changed on disk. Run ’systemctl daemon-reload’ to reload units. 4. Restart mysql # service mysqld restart