[mosh-devel] mosh and utmp on athena.dialup.mit.edu

[Keith Winstein]

Hello Jonathon,

I investigated and it's probably my fault -- I'm compiling and statically
linking on an Ubuntu system that expects it
in /usr/lib/x86_64-linux-gnu/utempter/utempter, and athena.dialup has it
in /usr/lib/utempter/utempter.

Could you please install libutempter-dev on the dialups? Then I can compile
on Athena, and my guess is it will start working again. (Or I can spin up a
VM that more closely matches the dialups if necessary.)

(Anton, this is a bit of a special case as I am the one who is building and
installing Mosh at MIT -- we use this to test release candidates.)

Regards,
Keith

On Thu, Feb 23, 2017 at 2:50 PM, Jonathon Weiss <jweiss at mit.edu> wrote:

>
> Hello all,
>
> Following up on a zephyr conversation I had with Keith and others
> about a week ago, I was wondering why mosh logins don't appear in the
> output of "who" or "w" on the athena.dialup.mit.edu servers.  We got
> as far as confirming that utempter was setgid utmp:
>
> -rwxr-sr-x 1 root utmp 10104 Oct  5  2012 /usr/lib/utempter/utempter
>
> oh, these files also appear to me ot have reasonable permissions:
>
> -rw-rw-r-- 1 root utmp 190080 Feb 23 17:47 /var/run/utmp
>
> -rw-rw-r-- 1 root utmp 2704128 Feb 23 17:45 /var/log/wtmp
>
> -rw-rw---- 1 root utmp 992640 Feb 23 17:25 /var/log/btmp
>
> Anything you can suggest to check?  Anyhting I can do to help debug?
>
>         Jonathon
>
>         Jonathon Weiss <jweiss at mit.edu>
>         MIT/IS&T/Infrastructure Design & Engineering
>         Cloud Platforms (Server Operations)
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>
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