Subject: Re: postgres source code installation vs rpm based installation
To: Pavan Kumar <pavan.dba27@gmail.com>, pgsql-admin@lists.postgresql.org
References: 
 <CA+M0sHEEnNWkLRk1DLzA7MPKF_SjPPs1iTrVfGLVt_+yFSx2og@mail.gmail.com>
From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
Openpgp: preference=signencrypt
Autocrypt: addr=mark.kirkwood@catalyst.net.nz; prefer-encrypt=mutual; keydata=
 mQGiBEifoLIRBADnzz1YAQxN+ajn3XhoyTWmp4hHTE05y1Ai0Hf4Et6HYohOw14eFzpzgEpd
 nbtxbs/FDprNC1d2dJ+J67qLzwKW6k95xekMWVtBQJ+tm7W9GPQ/wSSeOiya2tUO7TnjiS4H
 V0U0A2v6iiNDhUBpEiLQ3/09cXdJ3QuDQPP12gRFSwCgj+y/4HHUQeuQI6KYTZ6ynHYQrK8D
 /jYSakbQohDv/z9Z+PC4tgKugbkSumQC3q8G99z4idl1jEIAexJi89lAjrrVq1/WqdUqh0in
 ptsmh5Hk6eM24hqV36dYsvcYoDm3phAPIvEVYXwU9TPeqmxy46obUYpqymWl/EtZN9lIDqwU
 fS1SC9naB7Z1b03aAuvEXJwAdWg6BACp6SIWWvFc6ESdzkQ/5FtvHvq1grDa95y9Dzw9MBj+
 YvWSxBYJo38oqidBGhUsvAAAl5Xw82bbYIQGuw0UgYjg9z8sUapZiNp+Le+gP6DDc7Jyw51b
 eVKTDRjc/GH6hLINlEyWlW3jwUVEKLwZNpOcGTTgfwvPITpM8+1sqQ6egLQtTWFyayBLaXJr
 d29vZCA8bWFyay5raXJrd29vZEBjYXRhbHlzdC5uZXQubno+iGAEExECACAFAkifoLICGwMG
 CwkIBwMCBBUCCAMEFgIDAQIeAQIXgAAKCRCn/vj7UjxSJvn3AKCKsXwnda7/3zTYe01FRRnk
 GltvIQCcD+5qpmZ4AzvfcsFqZ1rw/reu9YW5Ag0ESJ+guRAIANEGLgCM28cWn1rg28ZpY4bC
 xUY/DMoQMyG+3oJW5vDYOi9BYdIsH+a3mRk/ElG4r9vlWrSQQwAuDayVH30RuBJU2xHKOx2d
 u22W54SU7Y+fOZS8IUfffgqnKGPkPucM5eLHIiQ33kiNUl7Ho0kDli3rfe5Jyz2tZGP3FB5s
 0u0v23wu7RltzgsFkxhI5kiPBBI0CVdr4w3s1gJM7id7TL8je8IOw/R+VadMn8Us9V9Hr4Yc
 iXhEwtkT3A9RA6ZZee3E3N09ZKjh3dxID2PMRxKPEUAuOELmVzpA77z0Sz6sZXtJgNLLvIjB
 iYvpZscbAGf5fjB8eBn1Kmmzow+tFy8AAwUH/ArPiMQquxtsmFUqMef5k80j66+/mDEbt9xV
 rz1MvXZ5NH4KVMUmgXlRN4yIOVyh/mMjiJ+DEBK/Tp4mcgQqhst2D0p/lvd3/QxtVGWts73y
 IAhRhWvq4jCC6Oy7IDrjRbnO0GEpumiMiT2kko1MCpXwBuJlKUxjlmlwEsKv2fbIsuGlES1u
 /QrLAk1ePfh5VDyKM5z+WT3GMDolrabehI8q5f0ZWPmN63Me6IM6Oqf5kYuRH0gwAauO3/bF
 6NjNsQvM6lm0MbcOzSBNdH/Aru6QPbhscArMUx2opn7gkYg8wCN+Bd1Se1dQTtAcDrEBmR5i
 aoCbEZYkCqVAJF/C5j6ISQQYEQIACQUCSJ+guQIbDAAKCRCn/vj7UjxSJn5/AJ4hzPttJ18v
 gOljiFMBvwIk2HIMTQCfYMk+dS/ixjmPGZ55dk9MNuaLSYQ=
Message-ID: <7463a2d9-6346-d9fd-8b4c-e47a92902c0a@catalyst.net.nz>
Date: Wed, 5 Jun 2019 10:50:18 +1200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
 Thunderbird/60.7.0
MIME-Version: 1.0
In-Reply-To: 
 <CA+M0sHEEnNWkLRk1DLzA7MPKF_SjPPs1iTrVfGLVt_+yFSx2og@mail.gmail.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Content-Language: en-GB
Precedence: bulk

On 5/06/19 8:00 AM, Pavan Kumar wrote:
> Hello Experts,
>
> I have couple of questions on postgres installation.
>
> 1. which way of installation is better ? source code or rpm based ?
> 2. for instance , If we need to install same version postgres on
> multiple times on same server. how do we need to handle=C2=A0this with =
rpm ?
> 3. If I go with source code installation, in case we need to upgrade
> OS(6 to 7) , do we need to recompile existing postgres binaries ?
>
> kindly share your experience.
>
>

Hi,

Some thoughts on these points:

Re 1: Source based is better if you want to customize compile time
variables (block size etc). However the (substantial) down side of that
approach is you need to be rebuilding for all the point releases (i.e
bug and security updates) as they come out- it is easy to forget or not
bother and end up way behind. This is where the rpm approach shines as
it does this for you.

Re 2: not sure (I use debs not rpms), however typically the install path
for binaries is fixed (i.e so you cannot install the same version in
multiple places). Also I'm not clear why you would want to do this.

Re 3: you might need to recompile in some cases after an upgrade
(dynamic linking to libraries outside the Postgres src that can get
their versions changed to the point where Postgres libs won't load
anymore). However testing should highlight this.

regards

Mark