Technological advantages over Linux

[Victor Sudakov]

Julien Cigar wrote:
> > > > I've just come across two related things which may convince me to
> > > > migrate some machines from FreeBSD to Debian.
> > > > 
> > > > 1. On Debian, you can run several instances of php-fpm with different
> > > > PHP versions in them.
> > > > 
> > > > 2. On Debian, you can install and run several versions of PostgreSQL
> > > > simultaneously thanks to the pg_createcluster/pg_lsclusters/...
> > > > infrastructure.
> > > > 
> > > > All that from standard packages, without manual compiling and tweaking,
> > > > jails etc, with minimal effort.
> > > 
> > > that's true, but once you setup a dedicated Poudriere machine, 
> > 
> > I do have a dedicated Poudriere machine. It can *build* different
> > versions and combinations of PHP/whatever (even that not always unless
> > you build separate -z sets with different make.conf files),
> > unfortunately you cannot *install* them simultaneously.
> > 
> > > that all
> > > your deployments are happening in jails, 
> > 
> > *All" deployments in jails is an overkill.
> > 
> 
> why? jails are so lightweight and are created almost instantly.. 

But upgraded and updated painfully. I still see nightmares about ezjail
on our web-hosting server.

However, I've learnt in this thread of new tools emerging:
sysutils/{iocage,pot,bastille}. So maybe there is hope yet.

> 
> > Using jails will be especially counterproductive in case of PostgreSQL
> > because you will not be able to do smart things like 
> > "pg_update --link --old-datadir XXX --new-datadir YYY".
> 
> there are workarounds, see 20190829 un ports/UPDATING for an example.

You are right, these are provisional workarounds, while in Debian you
can *run* different instances of different versions simultaneously, they
all will be managed by systemd, started/stopped as regular services etc.

> > > that you use some CMS (like
> > > SaltStack), and that everything is based on ZFS it's a *lot* easier to
> > > maintain on the long term, and you have a lot of flexibility. I think
> > 
> > I don't quite agree with you. Keeping multiple jails in an updated
> > state, and building multiple Poudriere sets (combination of packages)
> > for all your service jails is a huge administrative overhead best
> > avoided when not absolutely necessary.
> 
> that's what I'm doing here and it's perfectly manageable (with 
> SaltStack)..

Is SaltStack something like ansible?

-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
2:5005/49 at fidonet http://vas.tomsk.ru/
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