xtrbackup报错too many open files

InnoDB: Operating system error number 24 in a file operation.
InnoDB: Error number 24 means 'Too many open files'
InnoDB: Some operating system error numbers are described at http://dev.mysql.com/doc/refman/5.7/en/operating-system-error-codes.html
InnoDB: File ./monitordb/d_dap_tab_list_label#P#p20201019.ibd: 'open' returned OS error 124. Cannot continue operation
InnoDB: Cannot continue operation.

[mysql@vd32myzy01 ~]$ ulimit -n
65536

配置limit，重启。
https://www.cnblogs.com/datalife/p/11328518.html

与数据库建立了太多连接没有关闭导致的，建议关闭部分闲置的连接

与数据库建立了太多连接没有关闭导致的