Date: Sun, 13 Dec 2015 09:14:33 -0500 From: "Michael B. Eichorn" <ike@michaeleichorn.com> To: marcel <marcel.plouf@gmail.com>, Dirk Engling <erdgeist@erdgeist.org>, freebsd-jail@freebsd.org Subject: Re: Configuring network without ezjail Message-ID: <1450016073.15959.10.camel@michaeleichorn.com> In-Reply-To: <566D05DD.9080201@gmail.com> References: <566B67F7.1090404@gmail.com> <566B5CB6.8050009@erdgeist.org> <566B7D7E.2070507@gmail.com> <566B8183.3080306@gmail.com> <1449888253.23602.14.camel@michaeleichorn.com> <1449889151.23602.24.camel@michaeleichorn.com> <566D05DD.9080201@gmail.com>
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On Sun, 2015-12-13 at 05:45 +0000, marcel wrote:
>
> On 12/12/2015 02:59, Michael B. Eichorn wrote:
> > On Fri, 2015-12-11 at 21:44 -0500, Michael B. Eichorn wrote:
> > > On Sat, 2015-12-12 at 02:08 +0000, marcel wrote:
> > > > ... and I think I have enabling gateway, I wrote thins in both
> > > > of
> > > > my
> > > > rc.conf (jail and host):
> > > >
> > > > gateway_enable="YES"
> > > >
> > > > Is it correct ?
> > > You only need gateway_enable if you are doing routing, it is not
> > > necessary for a typical jail setup. Most of the time you are just
> > > adding an alias to the host's nic.
> OK so if I want to my jail can access to internet I have to do
> routing,
> right ?
No. In your other email you mentioned the host is behind a router, just
assign the jail a static ip on the same subnet as the host. The router
will treat it very similarly to adding another computer via a switch.
> > > > But I don't think I have DNS problems, my host correctly access
> > > > to
> > > > the
> > > > internet and the resolv.conf of my jail and my host are same...
> > > >
> > > > On 12/12/2015 01:50, marcel wrote:
> > > > > No I don't get to have an IP address... Yet I have writed
> > > > > this in
> > > > > my
> > > > > host's rc.conf:
> > > > >
> > > > > jail_enable="YES"
> > > > > jail_list="thename"
> > > > > jail_guantanamo_rootdir="thepath"
> > > > > jail_guantanamo_hostname="thename"
> > > > > jail_guantanamo_ip="192.168.0.12"
> > > > >
> > > > > and I use the command:
> > > > >
> > > > > jail thepath thename 192.168.0.12 /bin/csh
> > > > >
> > > > > to connect to my jail...
> > > > >
> > > > > On 11/12/2015 23:31, Dirk Engling wrote:
> > > > > > On 12.12.15 01:19, marcel wrote:
> > > > > >
> > > > > > > I would like to know if it is possible to configure a
> > > > > > > jail's
> > > > > > > network for
> > > > > > > accessing to the World Wide Web but without ezjail ?
> > > > > > > I have created my jail without ezjail (mkdir jail, make
> > > > > > > installworld,
> > > > > > > etc...) and I would like to continue without it if it's
> > > > > > > possible...
> > > > > > Sure, why doesn't it connect to the net? Does it have a
> > > > > > RFC1918
> > > > > > IP? If
> > > > > > so, you need to enable NAT. If not, did you enable
> > > > > > gatewaying?
> > > > > > Maybe you
> > > > > > just have DNS problems, so is your resolv.conf set up
> > > > > > properly?
> > > > > >
> > > > > > Without knowing what exactly is not working, I can not help
> > > > > > you.
> > > > > >
> > > > > > erdgeist
> > > I think you found some old instructions, assuming a 10.x system
> > > here
> > > is
> > > the boilerplate for a typical jail:
> > >
> > > rc.conf:
> > >
> > > jail_enable="YES"
> > >
> > > jail.conf:
> > >
> > > interface = re0;
> > > mount.devfs;
> > > exec.start = "/bin/sh /etc/rc";
> > > exec.stop = "/bin/sh /etc/rc.shutdown";
> > >
> > > thenameofthejail {
> > > host.hostname = host.domain.tld;
> > > path = /the/path/to/the/jail
> > > ip4.addr = 192.168.0.12;
> > > }
> > >
> > > and start it up with
> > >
> > > # jail -c thenameofthejail
> > >
> > > And another handy tip you can avoid building a jail with make by
> > > extacting the base.txz file found in places like the install
> > > media
> > > into
> > > the jail directory
> OK, so my jail.conf look like your jail.conf and when I type jls my
> jail
> have the IP 192.168.0.12 but when I type ifconfig in my jail I have
> no ip...
Is 192.168.0.12 your host IP? The jail needs a different static IP
address e.g. 182,168.0.13. There are ways around this but usually you
want a different IP. Each jail and the host have a different IP. The
setting ip4.addr in jail.conf will cause jail(8) to create an alias
with the new IP on the NIC specified by interface in jail.conf.
Destroying the jail with `jail -r <jailname> ` removes the alias.
> > Oh and before I forget, the trickiest thing for me moving from
> > ezjail
> > to jail was updating. Assuming your jails are complete base systems
> > and
> > that you would like to use binary updates with freebsd-update, and
> > you
> > have completely sparated jails without any funny tricks to save
> > space,
> > here is Ike's simple jail update guide:
> >
> > edit the jail's freebsd-update.conf and change
> >
> > Components src world kernel
> > -to-
> > Components world
> >
> > then run freebsd-update like so:
> >
> > # freebsd-update -b /usr/jails/jaildir \
> > -f usr/jails/jaildir/etc/freebsd-update.conf \
> > -d /usr/jails/jaildir/var/db/freebsd-update fetch
> > # freebsd-update -b /usr/jails/jaildir \
> > -f /usr/jails/jaildir/etc/freebsd-update.conf \
> > -d /usr/jails/jaildir/var/db/freebsd-update install
> >
> > Using the -f flag keeps the jail from using the host config since
> > jails
> > cannot update kernels anyway. And -d keeps jails and hosts from
> > trampling each other which is nice if you want to do more than one
> > at a
> > time, or if you use freebsd-update cron.
> Thanks for tip !
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