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From:Manuel Arostegui Date:March 11 2013 9:22am
Subject:Re: Multi-Master Replication Manager - monitor works but mmm_control
show executes very long and sometimes returns no output.
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2013/3/11 Rafał Radecki <radecki.rafal@stripped>

> Hi All.
>
> I use:
>
> cat /etc/redhat-release
> CentOS release 6.3 (Final)
>
> uname -a
> Linux prod1.local 2.6.32-279.14.1.el6.x86_64 #1 SMP Tue Nov 6 23:43:09
> UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
>
> on db host:
> rpm -qa | grep mmm
> mysql-mmm-2.2.1-1.el6.noarch
> bmysql-mmm-agent-2.2.1-1.el6.noarch
>
> on monitor host:
> rpm -qa | grep mmm
> mysql-mmm-monitor-2.2.1-1.el6.noarch
> mysql-mmm-2.2.1-1.el6.noarch
> mysql-mmm-tools-2.2.1-1.el6.noarch
>
> When I make mmm_control show/checks the command executes for example
> for ~15 seconds and sometimes returns no output. In logs there is no
> info about problems and overall the monitor performs well. But I
> cannot use mmm_control to check its status. The servers are not over
> loaded. I have restarted agents and monitor but that has not resolved
> the problem. When I have rebooted the monitor host first use of
> mmm_control show was ok but then the problem was active again.
>
> Any advice? Have you had any similar problems?


Hello,

Have you tried to set "debug 1" in your mmm_common.conf and start the
monitor? You might find useful output in there.

Manuel.


-- 
Manuel Aróstegui
Systems Team
tuenti.com

Thread
Multi-Master Replication Manager - monitor works but mmm_control showexecutes very long and sometimes returns no output.Rafał Radecki11 Mar
  • Re: Multi-Master Replication Manager - monitor works but mmm_controlshow executes very long and sometimes returns no output.Manuel Arostegui11 Mar
    • Re: Multi-Master Replication Manager - monitor works but mmm_controlshow executes very long and sometimes returns no output.Igor Shevtsov11 Mar
    • Re: Multi-Master Replication Manager - monitor works but mmm_controlshow executes very long and sometimes returns no output.Rafał Radecki13 Mar