[stunnel-users] Problem with name resolving on Centos 7

[Peter Pentchev]

On Wed, Feb 13, 2019 at 01:12:54PM +0100, Flo Rance wrote:
> Regards,
> Flo
> 
> On Wed, Feb 13, 2019 at 1:00 PM tom <posturne at gmail.com> wrote:
> 
> > Hello,
> >
> > > Are you sure 'foobar.remote.site' should resolve?
> > > Does "ping foobar.remote.site" work?
> >
> > yes, the host is resolved on commandline and other services on this
> > system can reach this host.
> >
> >
> > > Do you have a /var/run/stunnel/etc/resolv.conf file?
> >
> > No at this time I dont have this file, but it doesnt change anything
> > if I copy the original from /etc to this lokation. But this brings me
> > to the point try to dissable chroot and in this case stunnel is
> > working as expected. So far so good - there is something wrong in the
> > chroot jail.
> >
> > I try to put it to /var/run/stunnel - no luck, but maybe there are
> > other files missing as well?
> 
> If you want to resolv hostnames using resolv.conf file, you need the
> appropriate library libresolv which is part of libc.
> So you'll need to copy the libc librairies in your chroot environment.

Mmm, I don't think that the resolver libraries are loaded dynamically;
they are usually loaded in the stunnel binary at startup.

However, tom, can you also try copying the /etc/nsswitch.conf file to
the chroot?

G'luck,
Peter

-- 
Peter Pentchev  roam@{ringlet.net,debian.org,FreeBSD.org} pp at storpool.com
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