service zenoss start can't start : ERROR 1045 (28000): Access denied for user 'r ...

Hi, I have a new install zenoss using the auto scripts zenoss.

I have this error:

[root@zenoss4prd /]# service zenoss start
Zenoss not initialized. Performing first-boot initialization...
Fresh install pre steps
Checking RRDtool version >= 1.4.7: [ OK ] 1.4.7
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
Dropping database: zodb_session
Failed to create ZODB session database

At first I think that was a problem with MySQL, so I check the conexeion a local host:

[root@zenoss4prd /]# mysql -uroot
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.5.37 MySQL Community Server (GPL)

Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

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

mysql>

This is my table of user's acount:

mysql> select host,user,password from user\G
*************************** 1. row ***************************
host: localhost
user: root
password:
*************************** 2. row ***************************
host: zenoss4prd
user: root
password:
*************************** 3. row ***************************
host: 127.0.0.1
user: root
password:
*************************** 4. row ***************************
host: ::1
user: root
password:
*************************** 5. row ***************************
host: localhost
user:
password:
*************************** 6. row ***************************
host: zenoss4prd
user:
password:
6 rows in set (0.00 sec)

There is no set password for those users .

Any suggestions

Ty