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Re: chroot and network problem?



I think you need to mount /proc and /sys into chroot and configure your
files of the /etc for to have essential services of the network.

Gustavo Eli Pelcastre H.

> A while back, I worked out a chroot prescription that allowed
> me to chroot to each of my bootable partitions and run
>
>    yum -y --downloadonly update
>
> in each root so as to download all the updates for all the
> fedoras in cron each night.
>
> Lately I've been seeing this in the logs each day:
>
> Fetch Fedora 10 x86_64 updates...
> Fetch Fedora 10 i386 updates...
> http://livna.cat.pdx.edu/fedora/development/i386/repodata/repomd.xml:
> [Errno 4] IOError: <urlopen error (101, 'Network is unreachable')>
> Trying other mirror.
> Fetch Fedora 8 x86_64 updates...
> Fetch Fedora 8 i386 updates...
>
> I always get the network is unreachable error when chrooting
> to the 32 bit fedora 10 partition and trying to run yum.
>
> Is there some mysterious new filesystem that needs mounting
> or something? This is the script I've been using for the
> chroot:
>
> newroot="$1"
> shift
> arch="$1"
> shift
> if [ -d "$newroot" ]
> then
>    mount --bind /dev $newroot/dev
>    mount --bind /dev/pts $newroot/dev/pts
>    mount --bind /dev/shm $newroot/dev/shm
>    mount -t proc none $newroot/proc
>    mount -t sysfs none $newroot/sys
>    chroot $newroot setarch "$arch" "$@"
>    umount $newroot/sys
>    umount $newroot/proc
>    umount $newroot/dev/shm
>    umount $newroot/dev/pts
>    umount $newroot/dev
> else
>    echo "$newroot" is not a directory 1>&2
>    exit 2
> fi
>
> Google searches say network is unreachable usually means routing
> problem. Any special reason the network routing would be
> busted inside a chroot suddenly?
>
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