M2后台没用户信息，刷索引报错

新搞的开发环境，重新编译后，却报了以下的错误

Design Config Grid index has been rebuilt successfully in 00:00:19
SELECT `e`.`entity_id`, `t_d`.`attribute_id`, `t_d`.`value` FROM `customer_entity` AS `e`
 INNER JOIN `customer_entity_varchar` AS `t_d` ON e.entity_id = t_d.entity_id WHERE ( e.entity_id IN (1, 2…… 1230062)) AND (t_d.attribute_id IN ('189'))Customer Grid indexer process unknown error:
Warning: Error while sending QUERY packet. PID=149048 in /var/www/html/us/vendor/magento/zendframework1/library/Zend/Db/Adapter/Pdo/Abstract.php on line 305
Product Flat Data indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Category Flat Data indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Category Products indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Product Categories indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Catalog Rule Product indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Product EAV indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Stock indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Inventory indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Catalog Product Rule indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Product/Target Rule indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Target Rule/Product indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Product Price indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Catalog Search indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Sales Rule indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Google Product Removal Feed indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Google Product Feed indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Amasty Feed Rule indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Amasty Feed Products indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
Search Score Rules indexer process unknown error:
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away

本以为是程序问题，查来找去却未发现异常，后面百度了一下大概原因是mysql的max_allowed_packet太小，因为要插入的数据很多，超过了mysql限制的大小，所以异常了，原因知道了，那就得看看自身环境问题

mysql> show VARIABLES like 'max_allowed_packet';
+--------------------+---------+
| Variable_name      | Value   |
+--------------------+---------+
| max_allowed_packet | 4194304 |
+--------------------+---------+
1 row in set (0.00 sec)

mysql> show global VARIABLES like 'max_allowed_packet';
+--------------------+----------+
| Variable_name      | Value    |
+--------------------+----------+
| max_allowed_packet | 10485760 |
+--------------------+----------+
1 row in set (0.01 sec)

设置本机的限制，调大一点

mysql>  set global max_allowed_packet = 2*1024*1024*10;
Query OK, 0 rows affected (0.00 sec)

mysql> show global VARIABLES like 'max_allowed_packet';
+--------------------+----------+
| Variable_name      | Value    |
+--------------------+----------+
| max_allowed_packet | 20971520 |
+--------------------+----------+
1 row in set (0.00 sec)

最后重新执行索引命令，因用户数据非常多，所以等待了老长时间，最后正常了。