FATAL Failed to change master to 'db1': ERROR: Invalid master host in show slave status

[au...@naver.com]

Hi,

I have a question. My Slave node prints this message continually.

How can I Solve it????

 

-------------------------------

2014/01/03 15:06:38  INFO Changing active master to 'db1'
2014/01/03 15:06:39 FATAL Failed to change master to 'db1': ERROR: Invalid master host in show slave status
2014/01/03 15:06:41  INFO Changing active master to 'db1'
2014/01/03 15:06:42 FATAL Failed to change master to 'db1': ERROR: Invalid master host in show slave status
....

....

--------------------------------

 

[root@MMM1 ~]# cat /etc/mysql-mmm/mmm_common.conf
active_master_role writer

<host default>
 cluster_interface  eth0

 pid_path    /var/run/mmm_agentd.pid
 bin_path    /usr/lib/mysql-mmm/

    replication_user        repl
    replication_password    !replgod77

 agent_user    mmm_agent
 agent_password   !agentgod77
</host>

<host db1>
 ip      192.168.10.201
 mode     master
 peer     db2
</host>

<host db2>
 ip      192.168.10.202
 mode     master
 peer     db1
</host>

<host db3>
 ip      192.168.10.244
 mode     slave
</host>

<role writer>
 hosts     db1, db2 
 ips      192.168.10.250
 mode     exclusive
</role>

<role reader>
 hosts     db1, db2, db3 
 ips      192.168.10.251, 192.168.10.252, 192.168.10.253
 mode     balanced
</role>