About Zabbix forget admin login password reset password

[root@zabbix ~]#mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 52
Server version: 5.5.65-MariaDB MariaDB Server

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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> 

MariaDB [zabbix]> use zabbix;
MariaDB [zabbix]> select userid,alias,passwd from users;
+--------+-------+----------------------------------+
| userid | alias | passwd |
+--------+-------+----------------------------------+
| 1 | Admin | a8105204604a0b11e916f3879aae3b0b |
| 2 | guest | d41d8cd98f00b204e9800998ecf8427e |
+--------+-------+----------------------------------+
2 rows in set (0.00 sec)

[root@zabbix ~]# echo -n admin | openssl md5
(stdin) = 21232f297a57a5a743894a0e4a801fc3

MariaDB [zabbix]> update users set passwd='21232f297a57a5a743894a0e4a801fc3' where userid = '1';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0

MariaDB [zabbix]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)