无法在 centos7 上的 mariadb 10 中增加 open-files-limit
我搜索了主题主题并测试了选项，但我仍然无法增加用作 cpanel/whm 服务器的远程数据库服务器的 mariadb 服务器上的打开文件限制.这是很好的参考http://duntuk.com/how-raise-ulimit-open-files-and-mysql-openfileslimit
I searched about the topic subject and tested options, but I still cant increase the open-files-limit on my mariadb server that is used as remote database server for cpanel/whm server. here is s good reference http://duntuk.com/how-raise-ulimit-open-files-and-mysql-openfileslimit
我增加了
/etc/my.cnf
open-files-limit=65550
这是一些结果
#ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 63471
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 65535
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
最大用户进程 (-u) 65535虚拟内存 (kbytes, -v) 无限制文件锁 (-x) 无限制
max user processes (-u) 65535 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited
#ulimit -Hn -Sn
open files (-n) 65535
open files (-n) 65535
cat /etc/systemd/system/mariadb.service.d/limits.conf
[Service]
LimitNOFILE=65500
cat /usr/lib/systemd/system/mariadb.service
[Unit]
Description=MariaDB database server
After=syslog.target
After=network.target
[Service]
Type=simple
User=mysql
Group=mysql
LimitNOFILE=infinity
LimitMEMLOCK=infinity
我仍然在 mysql 中
and still in mysql I get
显示全局变量，如open%"；
show global variables like 'open%';
+------------------+------+
+------------------+-------+
|变量名 |价值 |
+------------------+------+
+------------------+-------+
|open_files_limit |第1024章|
| open_files_limit | 1024 |
+------------------+------+
+------------------+-------+
集合中的 1 行(0.00 秒)
1 row in set (0.00 sec)
重启后我一遍又一遍地出现以下错误
and im getting following error over and over after restart
60108 16:30:02 [ERROR] mysqld: Can't open file: './username_wp/wp_users.frm' (errno: 24)
160108 16:30:02 [ERROR] Error in accept: Too many open files
160108 16:30:04 [ERROR] Error in accept: Too many open files
160108 16:30:06 [ERROR] Error in accept: Too many open files
160108 16:30:11 [ERROR] mysqld: Can't open file: './username_db/strikes.frm' (errno: 24)
这是mariadb的启动日志
and here is the startup log of mariadb
[Warning] Could not increase number of max_open_files to more than 1024 (request: 132107)
推荐答案
终于找到了解决方案，但没有任何合理的原因！我正在运行 MariaDB 5.5，所有设置都很好，但软限制不超过 1024！我以为我的 mariadb 是 10.0，因为我刚刚安装了它
finally i find solution but without any reasonable cause ! i was running MariaDB 5.5 and all settings where fine but the soft limit did not goes more than 1024 ! i was thinking my mariadb is 10.0 as i freshly installed it
在我发现它是 5.5 之后，我尝试将它升级到 v10.0 ！然后繁荣！无需任何额外操作或设置即可解决问题(内核设置允许最大文件限制，如参考链接中所述)
after i find out that its 5.5 i tried to upgrade it to v10.0 ! and then BOOM ! problem solved without any extra action or setting ( kernel setting allows maximum files limit as described in reference link )
我希望它可以帮助其他人遇到同样的问题(但在尝试所有其他必需的设置之后)
i hope it help other peoples have same problem ( but after try all other required settings )
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