GitLab

Otherwise, an ops node will hang forever shutting down if the boss node
is down.

Don't recall what this rule was supposed to accomplish, but it
doesn't get installed anyway in the singlenet case since the ipfw
modules is not loaded.

We also make sure that all dirs in /var/emulab are really dirs and
not symlinks. Having /var/emulab/vms be a symlink (left over from
a vnode setup) caused vast confusion when trying to use the new
images for vnodes.

Note: you really, really should not image the vhost in an experiment
with vnodes. Prepare in such an environment is destructive and you
won't get a clean image anyway (due to LVM state). Swap the Xen image
in on a node directly and image that.

You do this by setting the nodeos of "xenhost", ala:

    set elabinelab_nodeos("xenhost") XEN44-64-BETA2

    set elabinelab_nodeos("boss") FBSD100-64-STD
    set elabinelab_nodeos("ops") FBSD100-64-STD

Needed for pygrub.

Stick the pid file into /run/sendsigs.omit.d. If xenstored is gone, any
attempt to use "xl" will hang un-killably, at least on Xen 4.4.

Note that this does not help shutdown to single user, which runs a different
"killprocs" script as it enters single-user. That kills all processes with
no omissions (/etc/rc1.d/S30killprocs)! We may want to consider running the
Xen start script following that to at least re-start xenstored (and which
will free up any hung processes).

I was having to hack grub.cfg to make this work anyway since I don't know
how to properly configure /etc/default/grub to use ttyS0 for regular Linux
and hvc0 for Linux under Xen.

This change would mess up the console on Xen 4.1 and Xen 4.3 image too.

we rely on that version of the tools in the code. Need to be
fixed at some point.

experiment.

I've seen about a dozen cases in the last two days of bad rspecs,
but not catching the fact that we cannot get peer ip from the
manifest on the other aggregate.

only visible to admin users. The control flow is not how we
want it, and I don't want to spend too much time on it until
Jon gets his stuff committed, which I think will include some
better ajax code.

Magical udev and upstart overrides.

Also, more tweaks for Xen 4.4.

only one of the tags, not all of them.

then 10 connections from the same source in the last 100 seconds. Note
this is just to the physical host itself, it does not affect traffic
to the containers.

pidfile is gone, or the process is gone; both imply
the container is gone, so don't throw an error.