lvsd kills off all nannies!

[Barry Brimer]

Quoting Dan Yocum <yocum at fnal.gov>:

> Hi all,
>
> Here's the situation we're running into - after setting a real server to
> active = 0 and weight = 0 and reloading pulse, <perform some work on the
> RS>, set active = 1 and weight = 3 and reloading pulse, lvsd first
> creates the monitor for the process, which dies for some strange reason,
> then proceeds to shutdown *all* virtual services!!
>
> Here's what I see in /var/log/messages:

<snip>
>
> Performing a 'service pulse restart' brings everything back online just
> fine.
>
> What's going on here?
>
> The OS is Scientific Linux 5.2 (i.e., RHELv5.2) on a Xen VM, kernel
> 2.6.18-128.1.6.el5xen.

What version of piranha do you have installed?  The latest version seems to
correct some nanny/pulse related issues
<https://rhn.redhat.com/errata/RHBA-2009-0095.html>

Barry