报错现象
[Warning] Could not increase number of max_open_files to more than 1024 (request: 5035)
[Warning] Changed limits: max_open_files: 1024 max_connections: 594 (was 4096) table_cache: 200 (was 2000)注：出现警告信息：提示最大打开文件数不能超过1024，但依然能够启动mariaDB。
解决方法
vim /etc/systemd/system/mariadb.service
14 # For example, if you want to increase mysql's open-files-limit to 10000,
15 # you need to increase systemd's LimitNOFILE setting, so create a file named
16 # "/etc/systemd/system/mariadb.service.d/limits.conf" containing:
17 # [Service]
18 # LimitNOFILE=10000
'//根据前面的warning信息，数值只需要大于上面提示的5035即可，还可以改为infinity '验证
注：修改完之后，重新加载配置
systemctl daemon-reload
systemctl restart mariadb
systemctl status mariadb