max_allowed_packet' bytes报错

进入mysql(mariadb) mysql -u root -p

show global variables like 'max_allowed_packet';  #显示 max_allowed_packet 值
 
set global max_allowed_packet = 16*1024*1024;  #设置max_allowed_packet值为16M

并且修改了/etc/my.cnf，添加下面这行
max_allowed_packet=16M

systemctl restart mariadb.service  #重启MariaDB