GitLab

hack to deal with inner vs outer control network.

except that it's been modified to the point of making the serial console usable
in the University of Utah Emulab.

The exact contents of this file vary according to the installation environment
in any case.

although the exact contents of this file vary according to the RPMs that are
installed when the system is created.

Initial checkin.  This version is from a virgin Red Hat Linux 9 installation, except that it spawns agetty on ttyS0.

* snmpit: When ElabInELabis true, use the routines in the new
  snmpit_remote.pm library for setting up and tearing down vlans for an
  experiment. At present, only these two operations are proxied out to
  the outer emulab.

* snmpit_remote.pm: A new little library that uses the XMLPRC server on
  the outer emulab to setup and destroy vlans for an inner experiment.
  This code is used from snmpit (see above).

* snmpit_lib.pm: A couple of minor changes for the server side of the
  proxy operation.

* snmpit.proxy.in: A new perl module that is invoked from the RPC
  server.  This proxy sets up and tears down vlans for an inner elab.
  The basic model is that the container experiment will have lots of
  vlans for various individual experiments running on the inner emulab.

* swapexp: A couple of minor elabinelab hacks.

* tbswap: For elabinelab experiments, reconfig/restart dhcpd when
  tearing down the experiment, and call out to new elabinelab script
  when setting up an elabinelab experiment. There is no provision for
  swapmod at this time.

* elabinelab: A new script to create the inner emulab. Does all kinds of
  gross DB stuff then more gross stuff on the inner ops and boss.

library to call out to the outer emulab to do the actual power cycle.

the initial DB contents are loaded. Create project, the users, the
groups, etc.

   This way we can use frisbee as a fast network copy.

2. In imageunzip, don't truncate the output file until we have performed
   basic validity checks.  Otherwise, if you happened to reverse the order
   of the imagefile and the output disk, it would truncate the imagefile
   and THEN fail.

3. Strip binaries when they are installed.

Contributed by Keith Sklower at Berkeley.

port, and the location of the SSL certificate used to talk to the server

If you install GRUB as the boot loader for Linux (actually Xen),
it seems to leave behind enough LILO residue to screw up imagezip.

dying to see whats going on. These changes can go into new images; it will
be ignored in non ElabInElab experiments;

rc.inelab: A terrible hack that I now regret. The whole point of this
script to allow inner boss/ops to 1) play by the standard state machine goo
(ISUP) for the outer emulab. That way os_setup, node_reboot, etc all work
when dealing with setting up the inner elab. 2) Since the inner
control can fall on any of the interfaces (as picked by assign), we
need to still do ifc/route configuration using tmcd. At the time I did
this, I expected that swapmod/swapin/swapout would be possible and
that boss/ops would be coming in on different nodes using different
interfaces for the inner control net, and that I would want to ask
each reboot. Well, I think swapping an inner emulab is a really long
way off, maybe so far off I'll be retired by that time.

rc.mkelab: A lot of very ugly code that turns a node into an inner ops
or boss. I won't bother to describe this code other than to say the
operating model for this rev is to create a fully functional inner
emulab based on the DB state provided by the outer emulab. Currently,
the current testbed software is expected to be in the /proj tree, and
a full boss/ops install is done, followed by all kinds of
customizations (like building accounts for members of the project,
etc) to make it a fully function emulab with just a single project;
the project in which the inner emulab was created.

resource tables.

New routine to return whether experiment is an ElabInElab experiment.

frisbee MFS with a zillion possible devices.  Requires that /sbin/mknod
be installed in the MFS as well.

Direct user to patch the py-m2crypto port.

retries and better error reporting.

put together a little library that provides the illusion of nativeness.

sslxmlrpc_client.py.in: New "rawmode" (-r) option. Instead of the
usual command line operation, input raw XMLRPC goo and send that over
to the server. The raw XMLRPC reply goo is spit out on stdout. In
other words, it is up to the caller to generate the XML stuff, and
convert back from XML to a reply structure.

libxmlrpc.pm.in: A new perl library that exports one real method
called, interestingly enough, CallMethod($$$). The first and second
arguments are the module and method to invoke in the RPC server. The
third argument is an arbitrary perl data structure to convert into XML
and pass to the server. For example:

	libxmlrpc::CallMethod("experiment", "state",
	                      {"proj" => "testbed", "exp" => "myemulab"});

The return value of CallMethod is whatever data structure the server
returned, or undef if there is an internal error or if the RPC fails
with a transport error (one of the errors in emulabclient.py).

In case it is not obvious, CallMethod converts the argument to XML
using the RPC:XML perl module, forks off a child to run
sslxmlrpc_client.py.in in rawmode, sends it the XML on its stdin,
reads back the XML for the reply from its stdout, and converts that to
a perl data structure to return to the caller.

The more interesting use of this new goo is to invoke the new
"elabinelab" module in the RPC server, which exports some new methods
to support elabinelab. The idea is that the inner boss will invoke
routines (like setup/destroy vlans, or power cycle) using the RPC
server, and the SSL key of the creator of the inner emulab. This will
be described in more detail when I check in those changes.

There is also a Config() method that is used to set the SSL cert path,
debugging, verbosity, etc. You can take a look if you are interested.

This can be arbitrarily fancy, but I don't need this for many things.

that ssh redirects through inner boss. This is pretty much how virtual
node ssh is done already.

the source of the link.  Otherwise when installing an MFS with something
like DESTDIR=/mnt, you wind up with links like:

lrwxr-xr-x   1 root  wheel   25 Nov  9 11:45 lib@ -> /mnt/usr/local/etc/emulab

which do not resolve when the MFS is booted.

This assumes that DESTDIR is only used for temporary mounting of filesystems
that are normally mounted elsewhere (and I believe that has always been the
intent of DESTDIR, at least in BSD).  If DESTDIR reflected the true path,
then the links will now be wrong.

file) option. Sends a SIGTERM to DHCPD after installing the new config
file.

error in the config file, and it would just result in an email storm
as it tries over and over to restart. Just send email and die.