Обсуждение: Fwd: [CentOS] Centos 7 LAPP setup Postgresql version and setup

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Fwd: [CentOS] Centos 7 LAPP setup Postgresql version and setup

От
Gary Stainburn
Дата:
Morning all,

I posted this to the Centos list yesterday asking for opinions. As a group 
with better knowledge of the situation, I thought I may get better responses 
from this group.

Gary
----------  Forwarded Message  ----------
Hi all,

I've got a nice shiny new server which I'm going to build as a LAPP platform.

I've just had a quick look for suitable instructions on the best way to 
configure it and I have a few questions. There are many hits, some better 
than others.

(It is replacing a Fedora 9 server so I'm expecting to have lots of *fun*)

1) 9.2 vs 9.5

Some of the instruction pages I've found install using the standard 
repositories and install version 9.2 (?) while some others add a postgresql 
repo and install 9.5

What are people's opinions? In the long term, and I going to have more admin 
hassle with one over the other? 

Will porting schemas including stored functions in pl/psql from 8.3 be 
easier / better with one version over the other?

2) network vs sockets 

I read somewhere that connecting Apache / PHP to Postgresql is faster if you 
use sockets rather than usling the loopback i/f.  Is this correct? If it is 
correct, what is the correct connect string if I use the 9.2 or 9.5 RPM's as 
described above?

There seems to be lots of Google content about sockets not working. Is it 
really that hard?

(I use pg_pconnect() to do the connecting)


Re: Fwd: [CentOS] Centos 7 LAPP setup Postgresql version and setup

От
Laurenz Albe
Дата:
On Fri, 2018-04-06 at 09:15 +0100, Gary Stainburn wrote:
> I've got a nice shiny new server which I'm going to build as a LAPP platform.
> [...]
> 
> 1) 9.2 vs 9.5
> 
> Some of the instruction pages I've found install using the standard 
> repositories and install version 9.2 (?) while some others add a postgresql 
> repo and install 9.5
> 
> What are people's opinions? In the long term, and I going to have more admin 
> hassle with one over the other? 
> 
> Will porting schemas including stored functions in pl/psql from 8.3 be 
> easier / better with one version over the other?

Do not install 9.2.  It is out of support.

Use v10 or 9.6 (if you lean towards older versions).

Do not use the PostgreSQL that comes with the operating system,
use the binaries provided by the PostgreSQL project.

> 2) network vs sockets 
> 
> I read somewhere that connecting Apache / PHP to Postgresql is faster if you 
> use sockets rather than usling the loopback i/f.  Is this correct? If it is 
> correct, what is the correct connect string if I use the 9.2 or 9.5 RPM's as 
> described above?
> 
> There seems to be lots of Google content about sockets not working. Is it 
> really that hard?
> 
> (I use pg_pconnect() to do the connecting)

Sockets is the way to go on localhost if you can.

Just use "host=/tmp" (or wherever unix_socket_directories points on your server).

Yours,
Laurenz Albe
-- 
Cybertec | https://www.cybertec-postgresql.com