postgres-xc-general Mailing List for Postgres-XC (Page 2)

Hello,

Following up on this, it appears that Joomla support Postgres in the 
idea that Postgres is available through their abstraction layer. 
However, the driver doesn't appear to exist (at least in completed 
form). Therefore I suggest Drupal or DjangoCMS.

Thoughts?

Sincerely,

jD

Apologies for top posting. I had recently  got XC to compile and run on Mac OSX. I don't have access to my sources right now, but I believe I had to hack one makefile to get this running. Will try to send a patch later today.

Thanks,
Pavan

Sent from my iPhone

On 27-May-2012, at 8:45 AM, Koichi Suzuki <koi...@gm...> wrote:

> The missing symbol is defined in gtm/main/main.c and
> gtm/proxy/proxy_main.c.   This is not defined in .o files contained in
> libgtm.a.
> 
> So we need to tweak ranlib to allow symbols to be solved at ld.    Do
> you know how to do it in Mac OS?
> 
> Regards;
> ----------
> Koichi Suzuki
> 
> 
> 2012/5/27 Nicola Vitacolonna <nvi...@gm...>:
>> Hi all,
>> I have tried to build v1.0beta2 on OS X 10.7.4, using gmake 3.82 and gcc
>> 4.2.1, but the process fails at an early stage with:
>> 
>> ar crs libgtm.a gtm_opt_scanner.o aset.o mcxt.o gtm_utils.o elog.o assert.o
>> stringinfo.o gtm_lock.o gtm_list.o gtm_serialize.o gtm_serialize_debug.o
>> gtm_opt_handler.o
>> ranlib libgtm.a
>> Undefined symbols for architecture x86_64:
>>   "_threadinfo_key", referenced from:
>>       _AllocSetContextCreate in aset.o
>>       _AllocSetAlloc in aset.o
>>       _AllocSetRealloc in aset.o
>>       _current_memcontext in mcxt.o
>>       _MemoryContextSwitchTo in mcxt.o
>>       _MemoryContextCreate in mcxt.o
>>       _MemoryContextInit in mcxt.o
>> etc...
>> 
>> Since the architecture (x86_64) is supported, I am just wondering whether
>> there is something so specific to Linux platforms that it is impossible or
>> very hard to port Postgres-XC to other OSes, or whether I am just missing
>> something.
>> 
>> Thanks in advance,
>> Nicola
>> 
>> 
>> ------------------------------------------------------------------------------
>> Live Security Virtual Conference
>> Exclusive live event will cover all the ways today's security and
>> threat landscape has changed and how IT managers can respond. Discussions
>> will include endpoint security, mobile security and the latest in malware
>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>> _______________________________________________
>> Postgres-xc-general mailing list
>> Pos...@li...
>> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>> 
> 
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and 
> threat landscape has changed and how IT managers can respond. Discussions 
> will include endpoint security, mobile security and the latest in malware 
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general

The missing symbol is defined in gtm/main/main.c and
gtm/proxy/proxy_main.c.   This is not defined in .o files contained in
libgtm.a.

So we need to tweak ranlib to allow symbols to be solved at ld.    Do
you know how to do it in Mac OS?

Regards;
----------
Koichi Suzuki


2012/5/27 Nicola Vitacolonna <nvi...@gm...>:
> Hi all,
> I have tried to build v1.0beta2 on OS X 10.7.4, using gmake 3.82 and gcc
> 4.2.1, but the process fails at an early stage with:
>
> ar crs libgtm.a gtm_opt_scanner.o aset.o mcxt.o gtm_utils.o elog.o assert.o
> stringinfo.o gtm_lock.o gtm_list.o gtm_serialize.o gtm_serialize_debug.o
> gtm_opt_handler.o
> ranlib libgtm.a
> Undefined symbols for architecture x86_64:
>   "_threadinfo_key", referenced from:
>       _AllocSetContextCreate in aset.o
>       _AllocSetAlloc in aset.o
>       _AllocSetRealloc in aset.o
>       _current_memcontext in mcxt.o
>       _MemoryContextSwitchTo in mcxt.o
>       _MemoryContextCreate in mcxt.o
>       _MemoryContextInit in mcxt.o
> etc...
>
> Since the architecture (x86_64) is supported, I am just wondering whether
> there is something so specific to Linux platforms that it is impossible or
> very hard to port Postgres-XC to other OSes, or whether I am just missing
> something.
>
> Thanks in advance,
> Nicola
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

On Sun, May 27, 2012 at 8:38 AM, Joseph Glanville <
jos...@or...> wrote:

> Hi List,
>
> I have bene taking a look at postgres-xc (installing a test cluster
> atm) but I was wondering if anyone could clarify what setups are
> available to facilitate HA/failover/replication etc?
> We primarily need read scalability and would like to syncrnously
> replicate all data to all or atleast a subset of datanodes with a hope
> that postgres-xc etc would handle failover and recovery seamlessly.
> I saw some presentation indicating this wasn't the case and that you
> require streaming replication in adition to postgres-xc clustering but
> there isn't much in the way of firm information that I could find.
>
You only need to use syncrep on a node when this node contains data that is
unique in the cluster. This is for example necessary if you distribute a
table data by hash, modulo or round robin among multiple nodes. Those nodes
need to be covered by any syncrep mechanism at node level. This is
particularly useful in case of disaster recovery.

If you plan to replicate all your tables at XC level, I mean that you use
the extension DISTRIBUTE BY REPLICATION in CREATE TABLE on a subset of
nodes (at least 2), in this case you do not need any syncrep as all your
data will be already replicated among multiple nodes. However, such a
configuration is expensive in writes, but perhaps in your application your
replicated tables are not updated that often.

For more details about recovery and HA stuff, the document indicated by
Koichi is really useful.
-- 
Michael Paquier
http://michael.otacoo.com

Cheer Koichi. :)

I will take a look!

Joseph.

On 27 May 2012 10:24, Koichi Suzuki <koi...@gm...> wrote:
> We've given XC tutorial at PGCon2012.    The material is available at
> http://sourceforge.net/projects/postgres-xc/files/Presentation/20120516_PGConTutorial/
>
> It covers how XC is different from read only replication, how to
> configure XC cluster, as well as HA arrangement.
>
> I hope it helps.
>
> Regards;
> ----------
> Koichi Suzuki
>
>
> 2012/5/27 Joseph Glanville <jos...@or...>:
>> Hi List,
>>
>> I have bene taking a look at postgres-xc (installing a test cluster
>> atm) but I was wondering if anyone could clarify what setups are
>> available to facilitate HA/failover/replication etc?
>> We primarily need read scalability and would like to syncrnously
>> replicate all data to all or atleast a subset of datanodes with a hope
>> that postgres-xc etc would handle failover and recovery seamlessly.
>> I saw some presentation indicating this wasn't the case and that you
>> require streaming replication in adition to postgres-xc clustering but
>> there isn't much in the way of firm information that I could find.
>>
>> Any pointers would be great! :)
>>
>> Joseph.
>>
>> --
>> CTO | Orion Virtualisation Solutions | www.orionvm.com.au
>> Phone: 1300 56 99 52 | Mobile: 0428 754 846
>>
>> ------------------------------------------------------------------------------
>> Live Security Virtual Conference
>> Exclusive live event will cover all the ways today's security and
>> threat landscape has changed and how IT managers can respond. Discussions
>> will include endpoint security, mobile security and the latest in malware
>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>> _______________________________________________
>> Postgres-xc-general mailing list
>> Pos...@li...
>> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general



-- 
CTO | Orion Virtualisation Solutions | www.orionvm.com.au
Phone: 1300 56 99 52 | Mobile: 0428 754 846

We've given XC tutorial at PGCon2012.    The material is available at
http://sourceforge.net/projects/postgres-xc/files/Presentation/20120516_PGConTutorial/

It covers how XC is different from read only replication, how to
configure XC cluster, as well as HA arrangement.

I hope it helps.

Regards;
----------
Koichi Suzuki


2012/5/27 Joseph Glanville <jos...@or...>:
> Hi List,
>
> I have bene taking a look at postgres-xc (installing a test cluster
> atm) but I was wondering if anyone could clarify what setups are
> available to facilitate HA/failover/replication etc?
> We primarily need read scalability and would like to syncrnously
> replicate all data to all or atleast a subset of datanodes with a hope
> that postgres-xc etc would handle failover and recovery seamlessly.
> I saw some presentation indicating this wasn't the case and that you
> require streaming replication in adition to postgres-xc clustering but
> there isn't much in the way of firm information that I could find.
>
> Any pointers would be great! :)
>
> Joseph.
>
> --
> CTO | Orion Virtualisation Solutions | www.orionvm.com.au
> Phone: 1300 56 99 52 | Mobile: 0428 754 846
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general

The problem is "pthread" compatibility.    Unlike core PostgreSQL, GTM
is based on pthread.    The cause could be referring uncompatible
struct member.    I hope I can find a time to look into it.   This
will help to extend supported platform.

Regards;
----------
Koichi Suzuki


2012/5/27 Michael Paquier <mic...@gm...>:
>
>
> On Sun, May 27, 2012 at 4:58 AM, Nicola Vitacolonna <nvi...@gm...>
> wrote:
>>
>> Hi all,
>> I have tried to build v1.0beta2 on OS X 10.7.4, using gmake 3.82 and gcc
>> 4.2.1, but the process fails at an early stage with:
>>
>> ar crs libgtm.a gtm_opt_scanner.o aset.o mcxt.o gtm_utils.o elog.o
>> assert.o stringinfo.o gtm_lock.o gtm_list.o gtm_serialize.o
>> gtm_serialize_debug.o gtm_opt_handler.o
>> ranlib libgtm.a
>> Undefined symbols for architecture x86_64:
>>   "_threadinfo_key", referenced from:
>>       _AllocSetContextCreate in aset.o
>>       _AllocSetAlloc in aset.o
>>       _AllocSetRealloc in aset.o
>>       _current_memcontext in mcxt.o
>>       _MemoryContextSwitchTo in mcxt.o
>>       _MemoryContextCreate in mcxt.o
>>       _MemoryContextInit in mcxt.o
>> etc...
>>
>> Since the architecture (x86_64) is supported, I am just wondering whether
>> there is something so specific to Linux platforms that it is impossible or
>> very hard to port Postgres-XC to other OSes, or whether I am just missing
>> something.
>
> MacOSX is based on free-BSD, so there should not be that many problems to
> compile...
> But the module whose compilation is failing here is GTM, a module exclusive
> to XC that has been developed and tested only on Linux platforms. I recall
> that it is possible to compile it by modifying a but the Makefiles, and I
> recall one guy who did some development in OSX. So Mason, any ideas about
> how to compile XC in OSX?
> I have ne experience developing XC in MacOS, but if someone has a patch to
> allow compilation on OSX, I will gladly commit it.
>
> Regards,
> --
> Michael Paquier
> http://michael.otacoo.com
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

Hi List,

I have bene taking a look at postgres-xc (installing a test cluster
atm) but I was wondering if anyone could clarify what setups are
available to facilitate HA/failover/replication etc?
We primarily need read scalability and would like to syncrnously
replicate all data to all or atleast a subset of datanodes with a hope
that postgres-xc etc would handle failover and recovery seamlessly.
I saw some presentation indicating this wasn't the case and that you
require streaming replication in adition to postgres-xc clustering but
there isn't much in the way of firm information that I could find.

Any pointers would be great! :)

Joseph.

-- 
CTO | Orion Virtualisation Solutions | www.orionvm.com.au
Phone: 1300 56 99 52 | Mobile: 0428 754 846

On Sun, May 27, 2012 at 4:58 AM, Nicola Vitacolonna
<nvi...@gm...>wrote:

> Hi all,
> I have tried to build v1.0beta2 on OS X 10.7.4, using gmake 3.82 and gcc
> 4.2.1, but the process fails at an early stage with:
>
> ar crs libgtm.a gtm_opt_scanner.o aset.o mcxt.o gtm_utils.o elog.o
> assert.o stringinfo.o gtm_lock.o gtm_list.o gtm_serialize.o
> gtm_serialize_debug.o gtm_opt_handler.o
> ranlib libgtm.a
> Undefined symbols for architecture x86_64:
>   "_threadinfo_key", referenced from:
>       _AllocSetContextCreate in aset.o
>       _AllocSetAlloc in aset.o
>       _AllocSetRealloc in aset.o
>       _current_memcontext in mcxt.o
>       _MemoryContextSwitchTo in mcxt.o
>       _MemoryContextCreate in mcxt.o
>       _MemoryContextInit in mcxt.o
> etc...
>
> Since the architecture (x86_64) is supported, I am just wondering whether
> there is something so specific to Linux platforms that it is impossible or
> very hard to port Postgres-XC to other OSes, or whether I am just missing
> something.
>
MacOSX is based on free-BSD, so there should not be that many problems to
compile...
But the module whose compilation is failing here is GTM, a module exclusive
to XC that has been developed and tested only on Linux platforms. I recall
that it is possible to compile it by modifying a but the Makefiles, and I
recall one guy who did some development in OSX. So Mason, any ideas about
how to compile XC in OSX?
I have ne experience developing XC in MacOS, but if someone has a patch to
allow compilation on OSX, I will gladly commit it.

Regards,
-- 
Michael Paquier
http://michael.otacoo.com

Hi all,
I have tried to build v1.0beta2 on OS X 10.7.4, using gmake 3.82 and gcc 4.2.1, but the process fails at an early stage with:

ar crs libgtm.a gtm_opt_scanner.o aset.o mcxt.o gtm_utils.o elog.o assert.o stringinfo.o gtm_lock.o gtm_list.o gtm_serialize.o gtm_serialize_debug.o gtm_opt_handler.o
ranlib libgtm.a
Undefined symbols for architecture x86_64:
  "_threadinfo_key", referenced from:
      _AllocSetContextCreate in aset.o
      _AllocSetAlloc in aset.o
      _AllocSetRealloc in aset.o
      _current_memcontext in mcxt.o
      _MemoryContextSwitchTo in mcxt.o
      _MemoryContextCreate in mcxt.o
      _MemoryContextInit in mcxt.o
etc...

Since the architecture (x86_64) is supported, I am just wondering whether there is something so specific to Linux platforms that it is impossible or very hard to port Postgres-XC to other OSes, or whether I am just missing something.

Thanks in advance,
Nicola

Hi all,

Since the official creation of the entity "Postgres-XC Development Group",
all the project copyright has been changed to that.
So now, the copyright becomes more flexible and has no more dependency with
NTT Group.

More legal information about Postgres-XC Development Group can be found
here:
https://sourceforge.net/apps/mediawiki/postgres-xc/index.php?title=Charter

Regards,
-- 
Michael Paquier
http://michael.otacoo.com

On 05/14/2012 08:15 PM, Michael Paquier wrote:

> I have some experience in Drupal myself.

I have a lot of experience with Drupal, PostgreSQLConference.org runs on 
top of it.

> But before dropping into a solution or another, it is necessary to
> define what could be necessary for such a website.
> Here are some ideas/guidelines:
> - Publication of articles

Articles, or blogs? Drupal can do both, but if we make articles blogs 
they are easily aggregated.

> - Redirection to packages and tarballs located on SourceForge

Well that is just links.

> - Quotes about users using XC

A page.

> - Sponsors

We could have a sponsor block on the side of the page or just a sponsors 
page.

> - An "About" page

And definitely a menu heading for this.

> - Something running on postgres-xc.org <http://postgres-xc.org>

Right now this just redirects to sourceforge. I am sure Devrim would 
point it anywhere the community wants it to go.

> - Others...
>
> The current project website is located at
> http://postgres-xc.sourceforge.net on SourceForce and it is not possible
> to use a DB application in the background there.

Right, so at a minimum we need a VM. We can do that.

jD

-- 
Command Prompt, Inc. - http://www.commandprompt.com/
PostgreSQL Support, Training, Professional Services and Development
The PostgreSQL Conference - http://www.postgresqlconference.org/
@cmdpromptinc - @postgresconf - 509-416-6579

Year, we really need these.   As to HA feature, Postgres synchronous
replication is a part of XC.    Maybe we need some words about Hot
Standby.    We have very limited information on MySQL clusterdb
though.
----------
Koichi Suzuki


2012/5/15 Chris Angelico <ro...@gm...>:
> On Tue, May 15, 2012 at 1:54 PM, Abbas Butt <abb...@te...> wrote:
>> Examples of some scenarios where XC fits in e.g. A school with multiple
>> branches, A hospital with multiple sites etc.
>
> And a related "Why should I use XC rather than [...]" for various
> options including Postgres synchronous replication, MySQL clusterdb,
> etc.
>
> ChrisA
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general

On Tue, May 15, 2012 at 1:54 PM, Abbas Butt <abb...@te...> wrote:
> Examples of some scenarios where XC fits in e.g. A school with multiple
> branches, A hospital with multiple sites etc.

And a related "Why should I use XC rather than [...]" for various
options including Postgres synchronous replication, MySQL clusterdb,
etc.

ChrisA

2012/5/14 Abbas Butt <abb...@te...>:
>
>
> On Tue, May 15, 2012 at 8:15 AM, Michael Paquier <mic...@gm...>
> wrote:
>>
>>
>>
>> On Mon, May 14, 2012 at 6:08 PM, Joshua D. Drake <jd...@co...>
>> wrote:
>>>
>>>
>>> On 05/14/2012 03:57 PM, Chris Angelico wrote:
>>>
>>> > Obviously it'd be rather cool to get a system that's backed by a
>>> > Postgres database, and run it on XC. It always looks good to
>>> > demonstrably eat your own dogfood, even if the web site could run
>>> > quite happily on a single-computer Postgres!
>>>
>>> Well Joomla and Drupal both support PostgreSQL natively. The other
>>> option would be DjangoCMS.
>>>
>>> Any massive CMS as far as I can tell will have some problems if it is
>>> unmaintained. Luckily, if the community wanted, CMD would be willing to
>>> actually put resources behind maintaining it.
>>>
>>> Oh, and any of the three listed above we could run on a very small
>>> postgres-xc cluster just so we are eating our own dog food.
>>
>> I have some experience in Drupal myself.
>> But before dropping into a solution or another, it is necessary to define
>> what could be necessary for such a website.
>> Here are some ideas/guidelines:
>> - Publication of articles
>> - Redirection to packages and tarballs located on SourceForge
>> - Quotes about users using XC
>> - Sponsors
>> - An "About" page
>> - Something running on postgres-xc.org
>> - Others...

Year, may need daily build and regression test result, as well as
performance benchmarks.

Also, I'd like to have "TIPS" (included in Q&A?)

---
Koichi Suzuki

>
>
> - FAQ
> - Sample database, sample programs, sample hardware/network setup
> - Tutorials both on how to setup and on some code insight
> - Examples of some scenarios where XC fits in e.g. A school with multiple
> branches, A hospital with multiple sites etc.
> - Comparison with similar products
> - Performance benchmarks
> - Steps required to move from existing cluster to XC.
>
>>
>>
>> The current project website is located at
>> http://postgres-xc.sourceforge.net on SourceForce and it is not possible to
>> use a DB application in the background there.
>> --
>> Michael Paquier
>> http://michael.otacoo.com
>>
>>
>> ------------------------------------------------------------------------------
>> Live Security Virtual Conference
>> Exclusive live event will cover all the ways today's security and
>> threat landscape has changed and how IT managers can respond. Discussions
>> will include endpoint security, mobile security and the latest in malware
>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>> _______________________________________________
>> Postgres-xc-general mailing list
>> Pos...@li...
>> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>>
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>

On Tue, May 15, 2012 at 8:15 AM, Michael Paquier
<mic...@gm...>wrote:

>
>
> On Mon, May 14, 2012 at 6:08 PM, Joshua D. Drake <jd...@co...>wrote:
>
>>
>> On 05/14/2012 03:57 PM, Chris Angelico wrote:
>>
>> > Obviously it'd be rather cool to get a system that's backed by a
>> > Postgres database, and run it on XC. It always looks good to
>> > demonstrably eat your own dogfood, even if the web site could run
>> > quite happily on a single-computer Postgres!
>>
>> Well Joomla and Drupal both support PostgreSQL natively. The other
>> option would be DjangoCMS.
>>
>> Any massive CMS as far as I can tell will have some problems if it is
>> unmaintained. Luckily, if the community wanted, CMD would be willing to
>> actually put resources behind maintaining it.
>>
>> Oh, and any of the three listed above we could run on a very small
>> postgres-xc cluster just so we are eating our own dog food.
>>
> I have some experience in Drupal myself.
> But before dropping into a solution or another, it is necessary to define
> what could be necessary for such a website.
> Here are some ideas/guidelines:
> - Publication of articles
> - Redirection to packages and tarballs located on SourceForge
> - Quotes about users using XC
> - Sponsors
> - An "About" page
> - Something running on postgres-xc.org
> - Others...
>

- FAQ
- Sample database, sample programs, sample hardware/network setup
- Tutorials both on how to setup and on some code insight
- Examples of some scenarios where XC fits in e.g. A school with multiple
branches, A hospital with multiple sites etc.
- Comparison with similar products
- Performance benchmarks
- Steps required to move from existing cluster to XC.


>
> The current project website is located at
> http://postgres-xc.sourceforge.net on SourceForce and it is not possible
> to use a DB application in the background there.
> --
> Michael Paquier
> http://michael.otacoo.com
>
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Postgres-xc-general mailing list
> Pos...@li...
> https://lists.sourceforge.net/lists/listinfo/postgres-xc-general
>
>

On Mon, May 14, 2012 at 6:08 PM, Joshua D. Drake <jd...@co...>wrote:

>
> On 05/14/2012 03:57 PM, Chris Angelico wrote:
>
> > Obviously it'd be rather cool to get a system that's backed by a
> > Postgres database, and run it on XC. It always looks good to
> > demonstrably eat your own dogfood, even if the web site could run
> > quite happily on a single-computer Postgres!
>
> Well Joomla and Drupal both support PostgreSQL natively. The other
> option would be DjangoCMS.
>
> Any massive CMS as far as I can tell will have some problems if it is
> unmaintained. Luckily, if the community wanted, CMD would be willing to
> actually put resources behind maintaining it.
>
> Oh, and any of the three listed above we could run on a very small
> postgres-xc cluster just so we are eating our own dog food.
>
I have some experience in Drupal myself.
But before dropping into a solution or another, it is necessary to define
what could be necessary for such a website.
Here are some ideas/guidelines:
- Publication of articles
- Redirection to packages and tarballs located on SourceForge
- Quotes about users using XC
- Sponsors
- An "About" page
- Something running on postgres-xc.org
- Others...

The current project website is located at
http://postgres-xc.sourceforge.neton SourceForce and it is not
possible to use a DB application in the
background there.
-- 
Michael Paquier
http://michael.otacoo.com

On 05/14/2012 03:57 PM, Chris Angelico wrote:

> Obviously it'd be rather cool to get a system that's backed by a
> Postgres database, and run it on XC. It always looks good to
> demonstrably eat your own dogfood, even if the web site could run
> quite happily on a single-computer Postgres!

Well Joomla and Drupal both support PostgreSQL natively. The other 
option would be DjangoCMS.

Any massive CMS as far as I can tell will have some problems if it is 
unmaintained. Luckily, if the community wanted, CMD would be willing to 
actually put resources behind maintaining it.

Oh, and any of the three listed above we could run on a very small 
postgres-xc cluster just so we are eating our own dog food.

jD



-- 
Command Prompt, Inc. - http://www.commandprompt.com/
PostgreSQL Support, Training, Professional Services and Development
The PostgreSQL Conference - http://www.postgresqlconference.org/
@cmdpromptinc - @postgresconf - 509-416-6579

On Tue, May 15, 2012 at 6:06 AM, Joshua D. Drake <jd...@co...> wrote:
> Well that sounds like just a more complete website in general running on
> something like Joomla or Drupal. Thoughts?

Hi, regular lurker on the list here.

I've been burnt several times by Joomla, mainly on security issues. My
suspicion is that maintaining a Joomla web site is a hefty job, and
that most people get slack (I currently host a community web site's
Joomla on my server, but am not the site admin - it's been plagued by
security problems, including attackers abusing it for sending spam and
such).

Obviously it'd be rather cool to get a system that's backed by a
Postgres database, and run it on XC. It always looks good to
demonstrably eat your own dogfood, even if the web site could run
quite happily on a single-computer Postgres!

The system I'm developing at work is currently running on vanilla
Postgres, but as we get closer to a beta launch, I'm probably going to
be asked to look into forking-for-reliability again. My first port of
call would be articles on the web site about how to migrate, how to
guarantee reliability even in the face of N node failures, etc. That's
the sort of thing I'd recommend / hope for from the site.

Chris Angelico

On 05/14/2012 12:47 PM, Michael Paquier wrote:

>
>     3. Michael's blog is great but there should be a project wide blog so
>     the project does not appear to be a one person project.
>
> This would be great. I don't have time to take care of that myself these
> days.
> But I could write posts on it.

CMD would be willing to help on this but I would need to know some 
requirements from the project.

>
>     4. Send English announcements on EST time. This will garner you the most
>     eyeballs between the States and Europe.
>
> Based in Japan... This doesn't help...

Perhaps it would be helpful if I knew the advocacy goals of the project?


>     6. With 1.0, you will want to get some quotes from some industry players
>     that are not a major supporter. Instead focus on people from the other
>     consulting companies and even better, a real user if possible.
>
> This is a great idea.
>
> Based on your ideas, I would say that a blog would not be enough to
> serve the purpose of the project, something more global is needed with,
> and the blog articles, let's say about development, would only be a
> section of it.
> It could also contain links to redirect to the tarballs downloadable on
> SourceForge, and package mirrors. Quotes could also be a part of it.

Well that sounds like just a more complete website in general running on 
something like Joomla or Drupal. Thoughts?

Sincerely,

Joshua D. Drake
-- 
Command Prompt, Inc. - http://www.commandprompt.com/
PostgreSQL Support, Training, Professional Services and Development
The PostgreSQL Conference - http://www.postgresqlconference.org/
@cmdpromptinc - @postgresconf - 509-416-6579

On Mon, May 14, 2012 at 12:32 PM, Joshua D. Drake <jd...@co...>wrote:

>
> Hello,
>
> I have been lurking here for a little while and have been following the
> project itself since March of 2011. With the imminent release of 1.0 I
> would like to offer some advocacy suggestions for wider coverage.
>
> 1. Major announcements should never go out on a weekend. Most people
> will never see them. Instead, focus major announcements to happen during
> the week on Tue/Wed/Thu. Monday is useless too many people are busy
> doing the catchup from the week before. Friday is useless because people
> are focused on getting out of work.
>
Yes, releasing beta2 on Sunday was not the best move ever.
Wanted to do that before but I got my hands full, and I am kind of the guy
doing it.

2. If possible, have a sponsoring company or individual run a PRWeb for
> the 1.0 announcement.

Thanks for the advice. I am sure it will be done.


> 3. Michael's blog is great but there should be a project wide blog so
> the project does not appear to be a one person project.
>
This would be great. I don't have time to take care of that myself these
days.
But I could write posts on it.


> 4. Send English announcements on EST time. This will garner you the most
> eyeballs between the States and Europe.
>
Based in Japan... This doesn't help...


> 5. I don't know if this is already done, but the Asian community
> probably has their own channels for communication.
>
Not that much. Only the ML are in use in English language.

6. With 1.0, you will want to get some quotes from some industry players
> that are not a major supporter. Instead focus on people from the other
> consulting companies and even better, a real user if possible.
>
This is a great idea.

Based on your ideas, I would say that a blog would not be enough to serve
the purpose of the project, something more global is needed with, and the
blog articles, let's say about development, would only be a section of it.
It could also contain links to redirect to the tarballs downloadable on
SourceForge, and package mirrors. Quotes could also be a part of it.


> Anyway, I hope that is helpful and I look forward to helping with this
> project.
>
Thanks! Any piece of advice is always appreciated.
-- 
Michael Paquier
http://michael.otacoo.com

Hello,

I have been lurking here for a little while and have been following the 
project itself since March of 2011. With the imminent release of 1.0 I 
would like to offer some advocacy suggestions for wider coverage.

1. Major announcements should never go out on a weekend. Most people 
will never see them. Instead, focus major announcements to happen during 
the week on Tue/Wed/Thu. Monday is useless too many people are busy 
doing the catchup from the week before. Friday is useless because people 
are focused on getting out of work.

2. If possible, have a sponsoring company or individual run a PRWeb for 
the 1.0 announcement.

3. Michael's blog is great but there should be a project wide blog so 
the project does not appear to be a one person project.

4. Send English announcements on EST time. This will garner you the most 
eyeballs between the States and Europe.

5. I don't know if this is already done, but the Asian community 
probably has their own channels for communication.

6. With 1.0, you will want to get some quotes from some industry players 
that are not a major supporter. Instead focus on people from the other 
consulting companies and even better, a real user if possible.

Anyway, I hope that is helpful and I look forward to helping with this 
project.

Sincerely,

Joshua D. Drake
-- 
Command Prompt, Inc. - http://www.commandprompt.com/
PostgreSQL Support, Training, Professional Services and Development
The PostgreSQL Conference - http://www.postgresqlconference.org/
@cmdpromptinc - @postgresconf - 509-416-6579

Hi all,

Postgres-XC, write-scalable multi-master symmetric cluster based on
PostgreSQL, version 1.0beta2 has been released.
This beta version is based on PostgreSQL 9.1.3. All the patches in
PostgreSQL 9.1 stable branch have been merged up to commit 1c0e678 (4th of
May 2012).

You can download the tarball directly from here:
https://sourceforge.net/projects/postgres-xc/files/latest/download
This tarball contains all the HTML and man documentation.

The following enhancements have been made since release of 1.0beta1:
- Redaction of release notes, summarizing all the features added in
Postgres-XC since the creation of the project
- Support for make world
- Regressions stabilized (no failures for 139 tests)
- Fix of more than 50 bugs.
- Merge with stable branch of PostgreSQL 9.1 (600~ commits).

Compared to version Postgres-XC 0.9.7, the following features have been
added:
- Fast query shipping (FQS), quick identification of expressions in a query
that can be pushed down to remote nodes
- SERIAL types
- TABLESPACE
- Utility to clean up 2PC transactions in cluster (pgxc_clean)
- Utility for initialization of GTM (global transaction manager, utility
called initgtm)
- Relation-size functions
- Regression stabilization

The release notes of 1.0 are directly available here:
http://postgres-xc.sourceforge.net/docs/1_0/release-xc-1-0.html.

The project can be followed on Source Forge:
http://postgres-xc.sourceforge.net/.
And the project uses a couple of GIT repositories for development:
- SourceForge:
http://postgres-xc.git.sourceforge.net/git/gitweb.cgi?p=postgres-xc/postgres-xc;a=summary
- Github: https://github.com/postgres-xc/postgres-xc

Postgres-XC 1.0beta2 will be used during the Postgres-XC tutorial at PGCon
in Ottawa, so be sure to touch this beta version to have an idea of what
Postgres-XC is before attending!

Thanks,
-- 
Michael Paquier
http://michael.otacoo.com

Thanks this is very helpful

Regards
ViVek

On Thu, May 3, 2012 at 4:57 AM, Michael Paquier
<mic...@gm...>wrote:

> On Wed, May 2, 2012 at 2:37 PM, Vivek Singh Raghuwanshi <
> viv...@gm...> wrote:
>
>> Please send me the link or white papers from where i can get information
>> like.
>> 3. Feature comparison of PostgreSQL and Postgres-XC
>> 4. and can we use Postgres-XC in production with mission critical env
>> with heavy load
>>
> If you are looking for some white papers about Postgres-XC:
> - some presentation documents done by people:
> http://sourceforge.net/projects/postgres-xc/files/Presentation/
> - some publications:
> http://sourceforge.net/projects/postgres-xc/files/Publication/
> - some presentations I did about the project:
> http://michael.otacoo.com/presentations/conferences/
>
> Hope this helps.
> Regards,
> --
> Michael Paquier
> http://michael.otacoo.com
>



-- 
ViVek Raghuwanshi
Mobile -+91-09595950504

Skype - vivek_raghuwanshi

On Wed, May 2, 2012 at 2:37 PM, Vivek Singh Raghuwanshi <
viv...@gm...> wrote:

> Please send me the link or white papers from where i can get information
> like.
> 3. Feature comparison of PostgreSQL and Postgres-XC
> 4. and can we use Postgres-XC in production with mission critical env with
> heavy load
>
If you are looking for some white papers about Postgres-XC:
- some presentation documents done by people:
http://sourceforge.net/projects/postgres-xc/files/Presentation/
- some publications:
http://sourceforge.net/projects/postgres-xc/files/Publication/
- some presentations I did about the project:
http://michael.otacoo.com/presentations/conferences/

Hope this helps.
Regards,
-- 
Michael Paquier
http://michael.otacoo.com