[OpenAFS-devel] Quick start guide reference implementation

Sun, 15 May 2016 21:14:54 -0400

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On 5/15/2016 7:44 PM, Karl-Philipp Richter wrote:
> Am 15.05.2016 um 20:15 schrieb Benjamin Kaduk:
>> There are some errors early on about "failed to restart bosserver (you=
 are
>> not authorized for this operation)" that make me wonder if travis is d=
oing
>> something with users and permissions that is destined to fail.
> According to
> http://stackoverflow.com/questions/29043709/is-it-possible-to-use-linux=
-bridges-on-travis-ci
> travis doesn't support kernel module loading.=20

The openafs kernel module not only is necessary to perform the steps
that require file access to /afs/your-cell-name.com/ but it also
provides the pioctl support necessary to store and retrieve afs tokens
for use by the bos, pts, and vos commands.

> The post recommends
> wercker.com on which the script fails with `kinit: Cannot contact any
> KDC for realm 'test' while getting initial credentials` which I had
> figured out once, but issues are harder to investigate on web CI
> services.

Having a working Kerberos realm is a precursor requirement to an OpenAFS
deployment.  There is little point in working on automated scripting of
the OpenAFS pieces until automated scripting for Kerberos is in place.

One of the challenges of Kerberos in an isolated continuous is that
Kerberos is dependent upon working DNS for the associated domain and IP
addresses.

While it would be possible to forge AFS impersonation tokens and bypass
the Kerberos requirement, the resulting scripts would not mirror the
instructions provided in a quick start guide for administrators.

> Thus, I'd like to get feedback how much sense you think this
> script (assume it'll be working one day) makes. I can't figure out so
> many failures because neither did I get AFS running ever nor am I a
> kerberos admin. I'd be willing to proceed from failure to failure until=

> it works one day if you support me.

Any and all automated testing of OpenAFS is beneficial.  However, there
are definitely limitations to what is possible using OpenAFS as it
exists today.  As Marc Dionne described at the end of his presentation
on the Docker based continuous integration testing environment that
AuriStor, Inc. constructed

  http://workshop.openafs.org/afsbpw15/talks/friday/dionne-docker.pdf

for AuriStorFS, there were many changes necessary to the service startup
logic to ensure reliable starting of cells when all of the servers were
started at once.  In addition, AuriStorFS also has many changes to avoid
the dependency on a kernel module for administrative tasks and the
execution of service processes as "root".

While it would be possible to write a script that performs all of the
OpenAFS administrative tasks using the -localauth option it won't be
possible to test the resulting setup using normal methods of
authentication.

> My motivation is to get AFS working (for years now with interruptions)
> and given the many issues I experienced a reference implementation of
> installation instructions seems to make sense for me.

Jeffrey Altman

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