FBSD jail versus VMWare? What services do YOU run in a jail?

Alejandro Imass aimass at yabarana.com
Thu Apr 24 15:20:21 UTC 2014

On Thu, Apr 24, 2014 at 11:18 AM, Alejandro Imass <aimass at yabarana.com> wrote:
> On Thu, Apr 24, 2014 at 3:02 AM, Eduardo Morras <emorrasg at yahoo.es> wrote:
>> On Tue, 22 Apr 2014 14:47:45 -0700
>> "edflecko ." <edflecko at gmail.com> wrote:
>>> What type of services CAN be run from within a jail?
>> I tried to run PostgreSQL8.4 (IIRC) in a jail under FreeBSD8.2. There were a lot of problems with SysV signals and semaphores (IIRC) and had to install it in host. Don't know if it's actually relevant.
> Yes SYSV IPC is _potentially_ problematic but the workaround is
> usually easy if you just make sure that you don't repeat the uids of
> the apps using SYSV IPC.
> So to run Pg on more than one Jail what I do is just change the Pg
> user id by concatenating the default hid which is 70 to the last
> numbers of the IP address of the jail. So for example if the IP of the
> jail is I would do this as soon as I install Pg on the
> Jail:
> pw usermod pgsql -u 70124
> pw groupmod pgsql -g 70124
> pw usermod pgsql -g 70124
> chown -R pgsql /usr/local/pgsql/
> chgrp -R pgsql /usr/local/pgsql/

You will also need this to run Pg in Jails:




Alejandro Imass

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