Hi
               I have made a lot of PostgreSQL High Availability tests (more 
than 20 by solution) and the two following products respond well to the need :

(1)    Repmgr (2ndQuadrant)

(2)    Pglookout (aiven)

About PAF, the product is hard to install and set up . It need a linux cluster 
and a system engineers team to use it.

Best Regards

[cid:image002.png@01D14E0E.8515EB90]


Didier ROS
Expertise SGBD
DS IT/IT DMA/Solutions Groupe EDF/Expertise Applicative - SGBD
Nanterre Picasso - E2 565D (aile nord-est)
32 Avenue Pablo Picasso
92000 Nanterre


De : thomas.p...@gmail.com [mailto:thomas.p...@gmail.com]
Envoyé : mardi 4 septembre 2018 16:59
À : pgsql-general@lists.postgresql.org
Objet : increasing HA

Hello,

I am looking after some advice about solution allowing to increase High 
availability?

Here is a bit of context :

I have an Master-Slave architecture
 - 1 master
 - 2 asynchronous slaves using replication slot
 - backup is made with barman using replication slot
 - Wal archiving is done towards barman server

I think 3 axes could be improved ( I am totaly novice with these):

- using of a proxy
 I found HAproxy.
 Could you advice any others solutions to explore or share your experience?
- using an automatick failover
 I found PAF
 Could you advice any others solutions to explore or share your experience?
- using a tool for fencing a failing node
Ideally, I aimagine to disable network traffic in I/O to prevent client 
connecting and exchange between backup server failling server + on postgesql 
server disable automatic restart of the service.
Could you share you experience about it?

- Maybe an other axe to explore ?

Thank you

Thomas



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