arch-linux – MySQL max_open_files超过1024
作者:互联网
在启动MariaDB时我得到[警告]无法将max_open_files的数量增加到1024以上(请求:4607)
$sudo systemctl status mysqld
● mysqld.service - MariaDB database server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled)
Active: activating (start-post) since Tue 2014-08-26 14:12:01 EST; 2s ago
Main PID: 8790 (mysqld); : 8791 (mysqld-post)
CGroup: /system.slice/mysqld.service
├─8790 /usr/bin/mysqld --pid-file=/run/mysqld/mysqld.pid
└─control
├─8791 /bin/sh /usr/bin/mysqld-post
└─8841 sleep 1
Aug 26 14:12:01 acpfg mysqld[8790]: 140826 14:12:01 [Warning] Could not increase number of max_open_files to more than 1024 (request: 4607)
我尝试使用此文件中的max_open_files解决问题但未成功:
$sudo nano /etc/security/limits.conf
mysql hard nofile 8192
mysql soft nofile 1200
我甚至重新启动了计算机,但我遇到了同样的问题.
/etc/mysql/my.cnf看起来像这样:
[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
如何用max_open_files解决问题?
解决方法:
编辑/etc/security/limits.conf并添加以下行
mysql soft nofile 65535
mysql hard nofile 65535
然后重新启动
然后编辑/usr/lib/systemd/system/mysqld.service或/usr/lib/systemd/system/mariadb.service并添加
LimitNOFILE=infinity
LimitMEMLOCK=infinity
然后重启db服务:
systemctl reload mariadb.service
标签:mysql,mariadb,arch-linux 来源: https://codeday.me/bug/20190815/1662073.html