ioguix' README

Build a PostreSQL Automated Failover in 5 minutes

Thu, 24 Jan 2019 22:20:00 +0100

I’ve been working with Vagrant to quickly build a fresh test cluster for PAF development. Combined with virsh snapshot related commands, I save a lot of time during my tons of tests by quickly rollbacking the whole cluster to the initial state.

PAF 2.2 rc1 released

Wed, 30 Aug 2017 14:00:00 +0200

The first release candidate of the PAF resource agent for Pacemaker has been released yesterday.

PAF, auto failover and more at PGConf.eu 2016

Wed, 02 Nov 2016 22:22:00 +0100

You will find the slides of my talk here: http://www.dalibo.org/_media/2016-pgconfeu-paf.html.gz

New repository for bloat estimation queries

Wed, 25 Feb 2015 23:05:00 +0100

It’s been almost a year now that I wrote the first version of the btree bloat estimation query. Then, came the first fixes, the bloat estimation queries for tables, more fixes, and so on. Maintaining these queries as gists on github was quite difficult and lack some features: no documented history, multiple links, no doc, impossible to fork, etc.

Partitioning and constraints part 1 - UNIQUE

Thu, 05 Feb 2015 09:30:00 +0100

Partitioning in PostgreSQL has been an artisanal work for a long time now. And despite the current discussion running since few month on PostgreSQL’s hackers mailing list, it will probably stay this way for some time again. Just because it requires a lot of brainstorm and work.

Btree bloat query - part 4

Mon, 03 Nov 2014 12:39:00 +0100

Thanks to the various PostgreSQL environments we have under monitoring at Dalibo, these Btree bloat estimation queries keeps challenging me occasionally because of statistics deviation…or bugs.

Bloat estimation for tables

Wed, 10 Sep 2014 18:30:00 +0200

After my Btree bloat estimation query, I found some time to work on a new query for tables. The goal here is still to have a better bloat estimation using dedicated queries for each kind of objects.

Btree bloat query changelog - part 3

Tue, 09 Sep 2014 17:00:00 +0200

Here are some fresh news about my previous work (see part 1 and part 2) on a better Btree bloat query.

More work and thoughts on index bloat estimation query

Tue, 24 Jun 2014 23:21:47 +0200

A few weeks ago, I published a query to estimate index bloat. Since then, I went back on this query a few times to fix some drawbacks:

Playing with indexes and better bloat estimate

Fri, 28 Mar 2014 07:05:00 +0100

Most of the PostgreSQL DBAs might know about this large bloat estimate query integrated in check_postgres. It is supposed to compute a rough estimate of the bloat for tables and indexes in a database. As the PostgreSQL wiki page says: