Running a Go server in a chroot

[Juliusz Chroboczek]

Hi,

I'm running a statically linked (CGO_ENABLED=0) Go network server in
a chroot under Linux. The chroot is completely empty (except for the
server's data files), yet, to my surprise, the only issue I'm seeing is
that the timezone is wrong.

So two questions, perhaps three:

1. Which file(s) do I copy into the chroot in order to have the correct
timezone ?

2. Any other files or device nodes I should copy into the chroot?

3. Am I cargo-culting, should I use a different setup instead? I'm not
too concerned about security, since the host is a VM connected to our
DMZ, just reasonably paranoid.

Thanks,

-- Juliusz

[paul.to...@gmail.com]

I'm running a statically linked (CGO_ENABLED=0) Go network server in
a chroot under Linux.  The chroot is completely empty (except for the
server's data files), yet, to my surprise, the only issue I'm seeing is
that the timezone is wrong.

  1. Which file(s) do I copy into the chroot in order to have the correct
     timezone ?
  2. Any other files or device nodes I should copy into the chroot?

strace could be handy to show you which files it tries to open

Cheers,

Paul 

[Serge Voilokov]

you need /usr/local/go/lib/time/zoneinfo.zip. time.LoadLocation is using it. Also /usr/local/go/lib/time/ has a script to refresh timezones.

[Juliusz Chroboczek]

> you need /usr/local/go/lib/time/zoneinfo.zip. time.LoadLocation is using
> it. Also /usr/local/go/lib/time/ has a script to refresh timezones.

It turns out that copying /etc/localtime into the chroot was enough.
Thanks to the person who helped me by private mail (he'll know who he
is).

-- Juliusz