Slony-I 1.0.4 Released

[Chris Browne]

The Slony-I team is proud to present the 1.0.4 release of the most
advanced replication solution for the most advanced Open Source
Database in the world.

The release tarball is available for download
http://developer.postgresql.org/~wie...1-1.0.4.tar.gz

There are a limited number of "new features" this release largely in
terms of adding in the ability to move or drop tables and sequences
from replication:

- SET DROP TABLE - drops a table from replication
- SET DROP SEQUENCE - does the same for sequences
- SET MOVE TABLE - moves a table from one replication set to another
- SET MOVE SEQUENCE - moves a sequence from one replication set to another

Other changes involve smoothing out the 'sharp edges' found by early
adopters, notably including:

- Frequently vacuuming pg_listener; growth of dead tuples could hurt
performance

- A cleanup process for pg_listener resolves cases where old slon
processes may have terminated due to network problems, leaving
backends around holding onto event notifications

- Lowered lock level on sl_event, resolving issues where pg_dump
would block Slony-I

- Purges CONFIRM entries for nodes that don't exist anymore

- Substantially increased documentation

- More sophisticated administration scripts

- Now uses string comparison for user defined types that do not have
a suitable comparison operation

- Safer log purging

- Various other bug fixes and "improved cleanliness."

- As of 1.0.4, the slon replication engine refuses to work against
any database that does not have the stored procedures for the same
version loaded or where the shared object containing the C language
support functions and the log trigger does not match the version
number. in a cluster must be upgraded at once.

See the HISTORY-1.0 file for a detailed list of changes.

<http://slony.info/>
--
let name="cbbrowne" and tld="cbbrowne.com" in String.concat "@" [name;tld];;
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A VAX is virtually a computer, but not quite.

[Gaetano Mendola]

Chris Browne wrote:

The Slony-I team is proud to present the 1.0.4 release of the most
advanced replication solution for the most advanced Open Source
Database in the world.

The release tarball is available for download
http://developer.postgresql.org/~wie...1-1.0.4.tar.gz

May I use it on a machine with a postgres 7.4.5 installed with RPM ?
Regards
Gaetano Mendola

[Christopher Browne]

Oops! Gaetano Mendola <me*****@bigfoot.com> was seen spray-painting on a wall:

Chris Browne wrote:

> The Slony-I team is proud to present the 1.0.4 release of the most
> advanced replication solution for the most advanced Open Source
> Database in the world.
>
> The release tarball is available for download
> http://developer.postgresql.org/~wie...1-1.0.4.tar.gz

May I use it on a machine with a postgres 7.4.5 installed with RPM ?

Probably only with some degree of trickery.

In the "1.0" series, it needs a copy of the PostgreSQL source tree. I
believe it uses that to refer it to where its components should be
installed.

In 1.1 (in CVS HEAD), it takes some advantage of the "pgxs" support,
so that you may instead point to the #includes, libs, and binaries.
But that's definitely a "work in progress," as opposed to something
that is complete.

All I can say for certain is that getting this sort of thing to work
on AIX is not fun, whatever the approach :-(.
--
output = reverse("gro.gultn" "@" "enworbbc")
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Rules of the Evil Overlord #43. "I will maintain a healthy amount of
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attracted to my power and good looks and will gladly betray her
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<http://www.eviloverlord.com/>

[Gaetano Mendola]

Christopher Browne wrote:

Oops! Gaetano Mendola <me*****@bigfoot.com> was seen spray-painting on a wall:

Chris Browne wrote:

> The Slony-I team is proud to present the 1.0.4 release of the most
> advanced replication solution for the most advanced Open Source
> Database in the world.
>
> The release tarball is available for download
> http://developer.postgresql.org/~wie...1-1.0.4.tar.gz

May I use it on a machine with a postgres 7.4.5 installed with RPM ?

Probably only with some degree of trickery.

I suspected it, I currently can not use it because of this. Any chance to
have a slony rpm compatible with the 7.4.5 rpm ?
Regards
Gaetano Mendola

[Chris Browne]

The Slony-I team <http://slony.info/> is happy to present the 1.0.5
release.

The release tarball is available for download
http://developer.postgresql.org/~wie...1-1.0.5.tar.gz

See the HISTORY-1.0 file for a detailed list of changes.
--
let name="cbbrowne" and tld="cbbrowne.com" in String.concat "@" [name;tld];;
http://www.ntlug.org/~cbbrowne/linuxxian.html
A VAX is virtually a computer, but not quite.

[Andrew Sullivan]

On Fri, Oct 22, 2004 at 09:36:10AM -0400, Jan Wieck wrote:

wealth. And as long as Afilias is using Slony-I in production, Andrew
Sullivan will not let me do whatever I want if there's a severe problem
nobody else can fix.

Or someone around here will, anyway. I might get hit by a wayward
streetcar, but Afilias is very strongly committed to maintaining
and improving Slony-I even as we also sponsor work on multimaster
systems. Afilias uses PostgreSQL for almost everything we do;
for us, there is no question that we'll need to support Slony.

It's worth pointing out here that the really big database vendors
usually have more than one thing that they sell as "replication".
That's because you can't really use (for instance) RAC across a WAN.
But if you're running a bank, or network infrastructure, or a phone
company, or anything else that requires you to have plans for the
disaster recovery of your disaster recovery site, you'll certainly
need to have replicas which are geographically dispersed. That's why
we've assigned staff, aside from Jan, to keep working on Slony-I.
That's _also_ why we wanted, from the very beginning, to build a
community around Slony: we knew that we couldn't do it ourselves, if
only because our perspective is bound to be limited by our
experiences, and we wanted to make sure that we wouldn't build in
such limitations. I think we've been pretty successful in that
attempt, and I'm delighted that we've managed to attract many
really smart people to the project.

A

--
Andrew Sullivan | aj*@crankycanuck.ca
This work was visionary and imaginative, and goes to show that visionary
and imaginative work need not end up well.
--Dennis Ritchie

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[Christopher Browne]

After takin a swig o' Arrakan spice grog, Gaetano Mendola <me*****@bigfoot.com> belched out:

Christopher Browne wrote:

> Oops! Gaetano Mendola <me*****@bigfoot.com> was seen spray-painting on a wall:
>

>>Chris Browne wrote:
>> > The Slony-I team is proud to present the 1.0.4 release of the most
>> > advanced replication solution for the most advanced Open Source
>> > Database in the world.
>> >
>> > The release tarball is available for download
>> > http://developer.postgresql.org/~wie...1-1.0.4.tar.gz
>>
>>May I use it on a machine with a postgres 7.4.5 installed with RPM ?

> Probably only with some degree of trickery.

I suspected it, I currently can not use it because of this. Any
chance to have a slony rpm compatible with the 7.4.5 rpm ?

If someone contributes RPM packages, using the same GCC and the same
RPM source RPM, then presumably it's possible.

There's a BSD port, so it has proven of enough interest to attract
contributions there. There's not yet a Debian package or an RPM for
one or another of the RPM-based distributions; hopefully interested
parties will find opportunity to build such.

I can appreciate the desire to have some pre-packaged components; I
generally despise the idea of compiling Perl stuff myself as that
tends to turn into a system management nightmare.

It may be that packages will emerge in six months; we'll see. If you
need RHAT RPM packages badly enough, that may be reason to pay someone
to build them.
--
let name="cbbrowne" and tld="linuxfinances.info" in String.concat "@" [name;tld];;
http://www.ntlug.org/~cbbrowne/linuxxian.html
Y2K conversion simplified: Januark, Februark, March, April, Mak, June,
Julk, August, September, October, November, December.

[Oliver Elphick]

On Fri, 2004-10-22 at 22:26 -0400, Christopher Browne wrote:

I suspected it, I currently can not use it because of this. Any
chance to have a slony rpm compatible with the 7.4.5 rpm ?

If someone contributes RPM packages, using the same GCC and the same
RPM source RPM, then presumably it's possible.

There's a BSD port, so it has proven of enough interest to attract
contributions there. There's not yet a Debian package or an RPM for
one or another of the RPM-based distributions; hopefully interested
parties will find opportunity to build such.

I'm interested in providing a Debian package, but the need to have the
postgresql source tree available is a problem. At the moment, unless I
incorporate slony-I into the postgresql source package, I can't package
it; the Debian autobuilders cannot be configured to build one package
(postgresql) and then keep its source around while another package is
built.

I thought someone was working on making a subsection of postgresql that
would be sufficient to let packages like Slony-I build independently; is
that making any progress? If not, what files from the source tree does
Slony-I need for its build? I could make a binary package to provide
just those and make that one a Build-dependency for the Slony-I package.
--
Oliver Elphick ol**@lfix.co.uk
Isle of Wight http://www.lfix.co.uk/oliver
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[Andrew Sullivan]

On Sat, Oct 23, 2004 at 04:59:26PM +0100, Oliver Elphick wrote:

I thought someone was working on making a subsection of postgresql that
would be sufficient to let packages like Slony-I build independently; is
that making any progress?

Chris recently said on the slony lists that he's aiming to do this
for 1.1, and I have reason to believe that that'll be well on the
road to release by the end of the year. Chris, are those bits
ready? Maybe Oliver could use them as inspiration for the Debian
work?

A

--
Andrew Sullivan | aj*@crankycanuck.ca
The fact that technology doesn't work is no bar to success in the marketplace.
--Philip Greenspun

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