maria-discuss team mailing list archive

[Karthick Subramanian <ksubramanian@xxxxxxxxxxxxxxx>]

Hi Stephane,

Once I have tested my settings, I am planning to use it in production
version. That's why I thought of using GA release(
https://github.com/tanji/replication-manager/releases/tag/1.0.0).

But please send me for the below details, So I will test my settings:

OS : CentOS 7
Maria DB : 10.1.17
Maxscale : 2:0

Hi Guillaume,

Thank you for your input. In order to make MRM independent from Maxscale, I
don't need to configure to execute as script via mysql Monitor section of
maxscale for event=master_down?

Also can you share me some documentation to understand this better, I am
little bit new to this technology and facing little challenge
to understand these below:

Also I am planning to use pcs-corosync to make maxscale(Active-standby) HA.

Source: https://github.com/tanji/replication-manager/blob/develop/README.md


>    - With monitor-less proxies, replication-manager can call scripts that
>    set and reload the new configuration of the leader route. A common scenario
>    is an VRRP Active Passive HAProxy sharing configuration via a network
>    disk with thereplication-manager scripts
>
>
>    - Using replication-manager as an API component of a group
>    communication cluster. MRM can be called as a Pacemaker resource that moves
>    alongside a VIP, the monitoring of the cluster is in this case already in
>    charge of the GCC.
>
>
On Thu, Mar 2, 2017 at 10:02 PM, Stephane Varoqui <stephane@xxxxxxxxxxx>
wrote:

> Hi Karthick,
>
>
> Please also use the upcoming release 1.1 with is the current dev release
> on github
> This is the best way to make this setup running
> I ‘ll send you a package
> if you tell me for what os ?
>
>
> /stephane
>
> Stéphane Varoqui, Senior Consultant
> Phone: +33 695-926-401, skype: svaroqui
> http://www.mariadb.com
>
>
>
>
> Le 2 mars 2017 à 17:26, Guillaume Lefranc <guillaume@xxxxxxxxxxxx> a
> écrit :
>
> Hi Karthick,
>
> (disclaimer: I am one of the authors of Replication Manager for MariaDB)
>
> you seem to be using outdated instructions. Please grab the 1.0.2 release
> for your distribution there:
> https://github.com/tanji/replication-manager/releases
>
> Replication Manager works best when used independently from MaxScale.
> Please read our documentation at https://github.com/tanji/
> replication-manager/blob/develop/README.md and let me know if you have
> any questions.
>
> Best
> Guillaume
>
> Le ven. 3 mars 2017 à 00:05, Karthick Subramanian <
> ksubramanian@xxxxxxxxxxxxxxx> a écrit :
>
>> Hi Experts,
>>
>> I have a 2 db server with one as master and another one as slave.
>>
>> Maxscale implemented with below monitor config:
>>
>> *[MySQL Monitor]*
>> *type=monitor*
>> *module=mysqlmon*
>> *servers=master1,slave1*
>> *monitor_interval=500*
>> *script=/usr/bin/replication-manager --user root:password --rpluser
>> replusr:password *
>> *--hosts $INITIATOR,$NODELIST --failover=force --interactive=false*
>> *events=master_down*
>>
>> When I shutdown master, failover is not automated. MRM (Replication
>> Manager) is not promoting the slave to master automatically.
>>
>> In maxscale log, I noticed below:
>>
>> *2017-03-02 03:33:36   notice : Executed monitor script
>> '/usr/bin/replication-manager --user root:password --rpluser
>> replusr:password --hosts $INITIATOR,$NODELIST --failover=force
>> --interactive=false' on event 'master_down'.*
>> *2017-03-02 03:33:36   error  : No Master can be determined.*
>>
>> Is this because I didn't have the quorum (no slave) since its one master
>> and one slave set-up. Is there any workaround.
>>
>> Regards,
>> Kart
>>
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