Problem to increaase max open files to more than 1024

Question

Hello,
I tried to increase the max open files to more than 1024 in the following way
$ sudo nano /etc/security/limits.conf
mysql hard nofile 8192
mysql soft nofile 1200
However, after reboot I am still not able to start MariaDB:
$ sudo systemctl start mysqld
Job for mysqld.service failed. See 'systemctl status mysqld.service' and 'journalctl -xn' for details.
$ sudo systemctl status mysqld
● mysqld.service - MariaDB database server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled)
Active: activating (start-post) since Tue 2014-09-02 13:08:20 EST; 53s ago
Main PID: 6504 (mysqld); : 6505 (mysqld-post)
CGroup: /system.slice/mysqld.service
├─6504 /usr/bin/mysqld --pid-file=/run/mysqld/mysqld.pid
└─control
├─6505 /bin/sh /usr/bin/mysqld-post
└─6953 sleep 1
Sep 02 13:08:20 acpfg mysqld[6504]: 140902 13:08:20 [Warning] Could not increase number of max_open_files to more than 1024 (request: 4607)
I am using the following /etc/mysql/my.cnf
[mysql]
# CLIENT #
port = 3306
socket = /home/u/tmp/mysql/mysql.sock
[mysqld]
# GENERAL #
user = mysql
default-storage-engine = InnoDB
socket = /home/u/tmp/mysql/mysql.sock
pid-file = /home/u/tmp/mysql/mysql.pid
# MyISAM #
key-buffer-size = 32M
myisam-recover = FORCE,BACKUP
# SAFETY #
max-allowed-packet = 16M
max-connect-errors = 1000000
skip-name-resolve
sql-mode = STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ONLY_FULL_GROUP_BY
sysdate-is-now = 1
innodb = FORCE
innodb-strict-mode = 1
# DATA STORAGE #
datadir = /home/u/tmp/mysql/
# BINARY LOGGING #
log-bin = /home/u/tmp/mysql/mysql-bin
expire-logs-days = 14
sync-binlog = 1
# CACHES AND LIMITS #
tmp-table-size = 32M
max-heap-table-size = 32M
query-cache-type = 0
query-cache-size = 0
max-connections = 500
thread-cache-size = 50
open-files-limit = 65535
table-definition-cache = 1024
table-open-cache = 2048
# INNODB #
innodb-flush-method = O_DIRECT
innodb-log-files-in-group = 2
innodb-log-file-size = 128M
innodb-flush-log-at-trx-commit = 1
innodb-file-per-table = 1
innodb-buffer-pool-size = 2G
# LOGGING #
log-error = /home/u/tmp/mysql/mysql-error.log
log-queries-not-using-indexes = 1
slow-query-log = 1
slow-query-log-file = /home/u/tmp/mysql/mysql-slow.log
How is it possible to increase the number?
Thank you in advance.

Answer 1

Change/add in the my.ini file, under [mysqld]:
max_allowed_packet=2048M
Reference:
* http://dev.mysql.com/doc/refman/5.5/en/ … wed_packet