I was able to fix this by going into the 
/etc/init.d/pe-puppet-dashboard-workers and editing the CPU line in the 
start section.

Previously it had {CPU:-2}, and I changed that to 4.   Instantly cleared 
the queue, and nodes showed up.  


On Tuesday, December 11, 2012 6:55:56 PM UTC-7, Dave Mankoff wrote:
>
> [On my dev server] For the past 3 days, my puppet master has shown all of 
> the hosts as unresponsive. However, when I log into one of the hosts and 
> run "puppet agent --test" everything seems to run without complaint. 
> Meanwhile the master shows an ever increasing number of pending tasks.
>
> When I try to restart the dashboard workers, I get the following:
>
> # /etc/init.d/pe-puppet-dashboard-workers restart
>  * Restarting PE Puppet Dashboard Workers
> ERROR: there is already one or more instance(s) of the program running
> ERROR: there is already one or more instance(s) of the program running
>  * PE Puppet Dashboard Worker (pid ) is not running
>                                                                           
>                                         [fail]
>
> Rebooting the computer does not seem to help. For that matter, I think 
> this problem started after a recent system update and reboot. It is running 
> Ubuntu 12.04. I can not seem to find anything meaningful in the logs, 
> though perhaps I am looking in the wrong places. Any advice? Things worked 
> fine just a few days ago, and I have not touched Puppet.
>

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