postgres-xc-general Mailing List for Postgres-XC

Please take a look at http://postgres-xc.sourceforge.net/docs/1_1/pgxc-ctl.html

Also, when you add restored GTM, you should initialize it as a slave,
then fail it over.

Regards;
---
Koichi Suzuki


2014-03-09 9:55 GMT+00:00 Juned Khan <jkh...@gm...>:
> Hi Koichi,
>
> what command i should use to connect restored GTM to the current master GTM
> as a slave ?
>
> it would be great if you provide me the link for all pgxc_ctl commands, so i
> can refer it myself.
>
> Regards
> Juned Khan
>
>
> On Sun, Mar 9, 2014 at 2:48 PM, Koichi Suzuki <koi...@gm...> wrote:
>>
>> You should connect restored GTM to the current master GTM as a slave,
>> then fail it over and reconnect GTM proxy to the new one.
>> Failed-over GTM has current cluster transaction status and the new
>> master has to restore its status from the current master GTM.
>>
>> Regards;
>> ---
>> Koichi Suzuki
>>
>>
>> 2014-03-09 4:34 GMT+00:00 Juned Khan <jkh...@gm...>:
>> > Hi Koichi,
>> >
>> > Yeah failover GTM and reconnection to GTM proxies to new GTM just works
>> > fine
>> > but how to reconnect to master GTM when it comes up ?
>> >
>> >
>> > On Sat, Mar 8, 2014 at 8:24 PM, Koichi Suzuki <koi...@gm...>
>> > wrote:
>> >>
>> >> When you fail-over GTM, you should reconnect gym-proxies to the new
>> >> gtm.   This could have been done automatically but now you need to do
>> >> this annually using reconnect command of pgxc_ctl.   When you find gym
>> >> proxy is down, you can just restart it.
>> >>
>> >> Regards;
>> >> ---
>> >> Koichi Suzuki
>> >>
>> >>
>> >> 2014-03-07 13:55 GMT+00:00 Juned Khan <jkh...@gm...>:
>> >> > Hi All,
>> >> >
>> >> > I have been configured pgxc with four servers.
>> >> >>
>> >> >> PGXC monitor all
>> >> >> Running: gtm master
>> >> >> Running: gtm slave
>> >> >> Running: gtm proxy gtm_pxy1
>> >> >> Running: gtm proxy gtm_pxy2
>> >> >> Running: coordinator master coord1
>> >> >> Running: coordinator master coord2
>> >> >> Running: datanode master datanode1
>> >> >> Running: datanode master datanode2
>> >> >
>> >> >
>> >> > I have configured slave for GTM, when i killed master GTM and
>> >> > promoted
>> >> > slave
>> >> > as master
>> >> > that's also worked fine.
>> >> >
>> >> > But i want to know what is exact procedure to bring original master
>> >> > to
>> >> > back
>> >> > using pgxc_ctl
>> >> >
>> >> > Even i tried with that manul process but still i am not able to bring
>> >> > it
>> >> > back. i think i messed up
>> >> > because now gtm proxies are fails to start
>> >> >
>> >> >> PGXC monitor all
>> >> >> Running: gtm master
>> >> >> Running: gtm proxy gtm_pxy1
>> >> >> Running: gtm proxy gtm_pxy2
>> >> >> Not running: coordinator master coord1
>> >> >> Not running: coordinator master coord2
>> >> >> Running: datanode master datanode1
>> >> >> Running: datanode master datanode2
>> >> >
>> >> >
>> >> > And still i don't see GTM slave running
>> >> > Can anyone please suggest me how to do this using pgxc_ctl?
>> >> >
>> >> >
>> >> > --
>> >> > Thanks,
>> >> > Juned Khan
>> >> > iNextrix Technologies Pvt Ltd.
>> >> > www.inextrix.com
>> >> >
>> >> >
>> >> >
>> >> > ------------------------------------------------------------------------------
>> >> > Subversion Kills Productivity. Get off Subversion & Make the Move to
>> >> > Perforce.
>> >> > With Perforce, you get hassle-free workflows. Merge that actually
>> >> > works.
>> >> > Faster operations. Version large binaries.  Built-in WAN optimization
>> >> > and
>> >> > the
>> >> > freedom to use Git, Perforce or both. Make the move to Perforce.
>> >> >
>> >> >
>> >> > http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
>> >> > _______________________________________________
>> >> > Postgres-xc-general mailing list
>> >> > Pos...@li...
>> >> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>> >> >
>> >
>> >
>> >
>> >
>> > --
>> > Thanks,
>> > Juned Khan
>> > iNextrix Technologies Pvt Ltd.
>> > www.inextrix.com
>
>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com

Hi Koichi,

what command i should use to connect restored GTM to the current master GTM
as a slave ?

it would be great if you provide me the link for all pgxc_ctl commands, so
i can refer it myself.

Regards
Juned Khan


On Sun, Mar 9, 2014 at 2:48 PM, Koichi Suzuki <koi...@gm...> wrote:

> You should connect restored GTM to the current master GTM as a slave,
> then fail it over and reconnect GTM proxy to the new one.
> Failed-over GTM has current cluster transaction status and the new
> master has to restore its status from the current master GTM.
>
> Regards;
> ---
> Koichi Suzuki
>
>
> 2014-03-09 4:34 GMT+00:00 Juned Khan <jkh...@gm...>:
> > Hi Koichi,
> >
> > Yeah failover GTM and reconnection to GTM proxies to new GTM just works
> fine
> > but how to reconnect to master GTM when it comes up ?
> >
> >
> > On Sat, Mar 8, 2014 at 8:24 PM, Koichi Suzuki <koi...@gm...>
> wrote:
> >>
> >> When you fail-over GTM, you should reconnect gym-proxies to the new
> >> gtm.   This could have been done automatically but now you need to do
> >> this annually using reconnect command of pgxc_ctl.   When you find gym
> >> proxy is down, you can just restart it.
> >>
> >> Regards;
> >> ---
> >> Koichi Suzuki
> >>
> >>
> >> 2014-03-07 13:55 GMT+00:00 Juned Khan <jkh...@gm...>:
> >> > Hi All,
> >> >
> >> > I have been configured pgxc with four servers.
> >> >>
> >> >> PGXC monitor all
> >> >> Running: gtm master
> >> >> Running: gtm slave
> >> >> Running: gtm proxy gtm_pxy1
> >> >> Running: gtm proxy gtm_pxy2
> >> >> Running: coordinator master coord1
> >> >> Running: coordinator master coord2
> >> >> Running: datanode master datanode1
> >> >> Running: datanode master datanode2
> >> >
> >> >
> >> > I have configured slave for GTM, when i killed master GTM and promoted
> >> > slave
> >> > as master
> >> > that's also worked fine.
> >> >
> >> > But i want to know what is exact procedure to bring original master to
> >> > back
> >> > using pgxc_ctl
> >> >
> >> > Even i tried with that manul process but still i am not able to bring
> it
> >> > back. i think i messed up
> >> > because now gtm proxies are fails to start
> >> >
> >> >> PGXC monitor all
> >> >> Running: gtm master
> >> >> Running: gtm proxy gtm_pxy1
> >> >> Running: gtm proxy gtm_pxy2
> >> >> Not running: coordinator master coord1
> >> >> Not running: coordinator master coord2
> >> >> Running: datanode master datanode1
> >> >> Running: datanode master datanode2
> >> >
> >> >
> >> > And still i don't see GTM slave running
> >> > Can anyone please suggest me how to do this using pgxc_ctl?
> >> >
> >> >
> >> > --
> >> > Thanks,
> >> > Juned Khan
> >> > iNextrix Technologies Pvt Ltd.
> >> > www.inextrix.com
> >> >
> >> >
> >> >
> ------------------------------------------------------------------------------
> >> > Subversion Kills Productivity. Get off Subversion & Make the Move to
> >> > Perforce.
> >> > With Perforce, you get hassle-free workflows. Merge that actually
> works.
> >> > Faster operations. Version large binaries.  Built-in WAN optimization
> >> > and
> >> > the
> >> > freedom to use Git, Perforce or both. Make the move to Perforce.
> >> >
> >> >
> http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> >> > _______________________________________________
> >> > Postgres-xc-general mailing list
> >> > Pos...@li...
> >> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
> >> >
> >
> >
> >
> >
> > --
> > Thanks,
> > Juned Khan
> > iNextrix Technologies Pvt Ltd.
> > www.inextrix.com
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

Hi Koichi,

I found datanode3 on node5 server. seems it been added there

PGXC Psql -dpostgres -h node5 -p 20008
Selected coord2.
psql (PGXC 1.1, based on PG 9.2.4)
Type "help" for help.

postgres=# select * from pgxc_node;
 node_name | node_type | node_port | node_host | nodeis_primary |
nodeis_preferred |   node_id
-----------+-----------+-----------+-----------+----------------+------------------+-------------
 datanode3 | C         |      5432 | localhost | f              |
f                | -1894792127
(1 row)


*But not able to drop it:*
postgres=# drop node datanode3;
ERROR:  PGXC Node datanode3: cannot drop local node


*pgxc status :*

> PGXC monitor all
> Running: gtm master
> Running: gtm slave
> Running: gtm proxy gtm_pxy1
> Running: gtm proxy gtm_pxy2
> Running: gtm proxy gtm_pxy3
> Running: coordinator master coord1
> Running: coordinator master coord2
> Running: coordinator master coord3
> Running: datanode master datanode1
> Running: datanode master datanode2
> Running: datanode master datanode3
>


all components are running properly.
please suggest.



On Sun, Mar 9, 2014 at 2:52 PM, Koichi Suzuki <koi...@gm...> wrote:

> Something seems went wrong in the first step you added.   It says that
> some coordinator master was not running when you added datanode3.   It
> was half done.
>
> To recover this, please try the following.
>
> 1) Visit each coordinator and issue "select * from pgxc_ndoe".   If
> you find "datanode3", issue "drop node datanode3" in each coordinator.
>
> 2) Make sure that all the coordinators are running.
>
> 3) Again, try "add datanode master" command from pgxc_ctl.
>
> Please note that you should have all the coordinator running properly
> when you add datanodes or coordinators.
>
> Regards;
> ---
> Koichi Suzuki
>
>
> 2014-03-09 7:14 GMT+00:00 Juned Khan <jkh...@gm...>:
> > Hi All,
> >
> > I have pgxc running with 1 master 1 slave , 2 GTM Proxy, 2 Datanode and 2
> > Coordinator.
> >
> > Now i want to add third component with GTM proxy, datanode and cordinator
> > I have configure third server and deployed binaries (deploy node5)
> >
> > then i have initialized each
> >
> > But when i tried to add third datanode i got below error
> > ERROR: Some of the coordinator masters are not running. Cannot add new
> one.
> >
> > so i started each component
> >
> > start gtm_proxy gtm_pxy3
> > start coordinator master coord3
> > start datanode master datanode3
> >
> > Now everything is running but i getting below error while executing a
> query.
> >
> >> koichi=# execute direct on (datanode3) 'select * from t1';
> >> ERROR:  PGXC Node datanode3: object not defined
> >
> >
> > and now if i am trying to add datanode while everything is running , its
> > throws below error:
> >
> >> PGXC add datanode master datanode3 node5 20008
> >> /home/postgres/pgxc/nodes/dn_master
> >> ERROR: Node name datanode3 duplicate.
> >
> >
> > Is that flow is correct or i am missing something
> > what steps i should do to make it working ?
> >
> >
> > --
> > Thanks,
> > Juned Khan
> > iNextrix Technologies Pvt Ltd.
> > www.inextrix.com
> >
> >
> ------------------------------------------------------------------------------
> > Subversion Kills Productivity. Get off Subversion & Make the Move to
> > Perforce.
> > With Perforce, you get hassle-free workflows. Merge that actually works.
> > Faster operations. Version large binaries.  Built-in WAN optimization and
> > the
> > freedom to use Git, Perforce or both. Make the move to Perforce.
> >
> http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> > _______________________________________________
> > Postgres-xc-general mailing list
> > Pos...@li...
> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
> >
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

Something seems went wrong in the first step you added.   It says that
some coordinator master was not running when you added datanode3.   It
was half done.

To recover this, please try the following.

1) Visit each coordinator and issue "select * from pgxc_ndoe".   If
you find "datanode3", issue "drop node datanode3" in each coordinator.

2) Make sure that all the coordinators are running.

3) Again, try "add datanode master" command from pgxc_ctl.

Please note that you should have all the coordinator running properly
when you add datanodes or coordinators.

Regards;
---
Koichi Suzuki


2014-03-09 7:14 GMT+00:00 Juned Khan <jkh...@gm...>:
> Hi All,
>
> I have pgxc running with 1 master 1 slave , 2 GTM Proxy, 2 Datanode and 2
> Coordinator.
>
> Now i want to add third component with GTM proxy, datanode and cordinator
> I have configure third server and deployed binaries (deploy node5)
>
> then i have initialized each
>
> But when i tried to add third datanode i got below error
> ERROR: Some of the coordinator masters are not running. Cannot add new one.
>
> so i started each component
>
> start gtm_proxy gtm_pxy3
> start coordinator master coord3
> start datanode master datanode3
>
> Now everything is running but i getting below error while executing a query.
>
>> koichi=# execute direct on (datanode3) 'select * from t1';
>> ERROR:  PGXC Node datanode3: object not defined
>
>
> and now if i am trying to add datanode while everything is running , its
> throws below error:
>
>> PGXC add datanode master datanode3 node5 20008
>> /home/postgres/pgxc/nodes/dn_master
>> ERROR: Node name datanode3 duplicate.
>
>
> Is that flow is correct or i am missing something
> what steps i should do to make it working ?
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com
>
> ------------------------------------------------------------------------------
> Subversion Kills Productivity. Get off Subversion & Make the Move to
> Perforce.
> With Perforce, you get hassle-free workflows. Merge that actually works.
> Faster operations. Version large binaries.  Built-in WAN optimization and
> the
> freedom to use Git, Perforce or both. Make the move to Perforce.
> http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

You should connect restored GTM to the current master GTM as a slave,
then fail it over and reconnect GTM proxy to the new one.
Failed-over GTM has current cluster transaction status and the new
master has to restore its status from the current master GTM.

Regards;
---
Koichi Suzuki


2014-03-09 4:34 GMT+00:00 Juned Khan <jkh...@gm...>:
> Hi Koichi,
>
> Yeah failover GTM and reconnection to GTM proxies to new GTM just works fine
> but how to reconnect to master GTM when it comes up ?
>
>
> On Sat, Mar 8, 2014 at 8:24 PM, Koichi Suzuki <koi...@gm...> wrote:
>>
>> When you fail-over GTM, you should reconnect gym-proxies to the new
>> gtm.   This could have been done automatically but now you need to do
>> this annually using reconnect command of pgxc_ctl.   When you find gym
>> proxy is down, you can just restart it.
>>
>> Regards;
>> ---
>> Koichi Suzuki
>>
>>
>> 2014-03-07 13:55 GMT+00:00 Juned Khan <jkh...@gm...>:
>> > Hi All,
>> >
>> > I have been configured pgxc with four servers.
>> >>
>> >> PGXC monitor all
>> >> Running: gtm master
>> >> Running: gtm slave
>> >> Running: gtm proxy gtm_pxy1
>> >> Running: gtm proxy gtm_pxy2
>> >> Running: coordinator master coord1
>> >> Running: coordinator master coord2
>> >> Running: datanode master datanode1
>> >> Running: datanode master datanode2
>> >
>> >
>> > I have configured slave for GTM, when i killed master GTM and promoted
>> > slave
>> > as master
>> > that's also worked fine.
>> >
>> > But i want to know what is exact procedure to bring original master to
>> > back
>> > using pgxc_ctl
>> >
>> > Even i tried with that manul process but still i am not able to bring it
>> > back. i think i messed up
>> > because now gtm proxies are fails to start
>> >
>> >> PGXC monitor all
>> >> Running: gtm master
>> >> Running: gtm proxy gtm_pxy1
>> >> Running: gtm proxy gtm_pxy2
>> >> Not running: coordinator master coord1
>> >> Not running: coordinator master coord2
>> >> Running: datanode master datanode1
>> >> Running: datanode master datanode2
>> >
>> >
>> > And still i don't see GTM slave running
>> > Can anyone please suggest me how to do this using pgxc_ctl?
>> >
>> >
>> > --
>> > Thanks,
>> > Juned Khan
>> > iNextrix Technologies Pvt Ltd.
>> > www.inextrix.com
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > Subversion Kills Productivity. Get off Subversion & Make the Move to
>> > Perforce.
>> > With Perforce, you get hassle-free workflows. Merge that actually works.
>> > Faster operations. Version large binaries.  Built-in WAN optimization
>> > and
>> > the
>> > freedom to use Git, Perforce or both. Make the move to Perforce.
>> >
>> > http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
>> > _______________________________________________
>> > Postgres-xc-general mailing list
>> > Pos...@li...
>> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>> >
>
>
>
>
> --
> Thanks,
> Juned Khan
> iNextrix Technologies Pvt Ltd.
> www.inextrix.com

Hi All,

I have pgxc running with 1 master 1 slave , 2 GTM Proxy, 2 Datanode and 2
Coordinator.

Now i want to add third component with GTM proxy, datanode and cordinator
I have configure third server and deployed binaries (deploy node5)

then i have initialized each

But when i tried to add third datanode i got below error
ERROR: Some of the coordinator masters are not running. Cannot add new one.

so i started each component

start gtm_proxy gtm_pxy3
start coordinator master coord3
start datanode master datanode3
Now everything is running but i getting below error while executing a query.

*koichi=# execute direct on (datanode3) 'select * from t1';*
> *ERROR:  PGXC Node datanode3: object not defined*
>

and now if i am trying to add datanode while everything is running , its
throws below error:

*PGXC add datanode master datanode3 node5 20008
> /home/postgres/pgxc/nodes/dn_master*
> *ERROR: Node name datanode3 duplicate*.
>

Is that flow is correct or i am missing something
what steps i should do to make it working ?


-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com

Hi Koichi,

Yeah failover GTM and reconnection to GTM proxies to new GTM just works fine
but how to reconnect to master GTM when it comes up ?


On Sat, Mar 8, 2014 at 8:24 PM, Koichi Suzuki <koi...@gm...> wrote:

> When you fail-over GTM, you should reconnect gym-proxies to the new
> gtm.   This could have been done automatically but now you need to do
> this annually using reconnect command of pgxc_ctl.   When you find gym
> proxy is down, you can just restart it.
>
> Regards;
> ---
> Koichi Suzuki
>
>
> 2014-03-07 13:55 GMT+00:00 Juned Khan <jkh...@gm...>:
> > Hi All,
> >
> > I have been configured pgxc with four servers.
> >>
> >> PGXC monitor all
> >> Running: gtm master
> >> Running: gtm slave
> >> Running: gtm proxy gtm_pxy1
> >> Running: gtm proxy gtm_pxy2
> >> Running: coordinator master coord1
> >> Running: coordinator master coord2
> >> Running: datanode master datanode1
> >> Running: datanode master datanode2
> >
> >
> > I have configured slave for GTM, when i killed master GTM and promoted
> slave
> > as master
> > that's also worked fine.
> >
> > But i want to know what is exact procedure to bring original master to
> back
> > using pgxc_ctl
> >
> > Even i tried with that manul process but still i am not able to bring it
> > back. i think i messed up
> > because now gtm proxies are fails to start
> >
> >> PGXC monitor all
> >> Running: gtm master
> >> Running: gtm proxy gtm_pxy1
> >> Running: gtm proxy gtm_pxy2
> >> Not running: coordinator master coord1
> >> Not running: coordinator master coord2
> >> Running: datanode master datanode1
> >> Running: datanode master datanode2
> >
> >
> > And still i don't see GTM slave running
> > Can anyone please suggest me how to do this using pgxc_ctl?
> >
> >
> > --
> > Thanks,
> > Juned Khan
> > iNextrix Technologies Pvt Ltd.
> > www.inextrix.com
> >
> >
> ------------------------------------------------------------------------------
> > Subversion Kills Productivity. Get off Subversion & Make the Move to
> > Perforce.
> > With Perforce, you get hassle-free workflows. Merge that actually works.
> > Faster operations. Version large binaries.  Built-in WAN optimization and
> > the
> > freedom to use Git, Perforce or both. Make the move to Perforce.
> >
> http://pubads.g.doubleclick.net/gampad/clk?id=122218951&iu=/4140/ostg.clktrk
> > _______________________________________________
> > Postgres-xc-general mailing list
> > Pos...@li...
> > https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
> >
>



-- 
Thanks,
Juned Khan
iNextrix Technologies Pvt Ltd.
www.inextrix.com