RE: increasing HA

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(dot)png(at)01D14E0E(dot)8515EB90]

Didier ROS
Expertise SGBD
DS IT/IT DMA/Solutions Groupe EDF/Expertise Applicative - SGBD
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De : thomas(dot)poty(at)gmail(dot)com [mailto:thomas(dot)poty(at)gmail(dot)com]
Envoyé : mardi 4 septembre 2018 16:59
À : pgsql-general(at)lists(dot)postgresql(dot)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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