You may wish to stop the scheduler, for example to perform maintenance. There are many ways to do this, but the best way is to use a capability built into the API, called vtk_server_config.

1. To suspend the dispatching of jobs, use the following command:

  % nc cmd vovsh -x 'vtk_server_config scheduler suspend'

While the scheduler is suspended, if you ask for information about a Queued job, you will get the following response:

% nc info 029361701
Id,User,Group   029361701,jjj.staff,/allegro/PIC.jjj
Environment     SNAPSHOT(vnc_logs/snapshots/jjj/macosx/env16749.env)
Directory       /Users/jjj
Command         sleep 10
Resources       macos
Submitted from  mac01
Submitted at    Fri Dec 02 19:16:27 CET 2016
Priorities      schedule=normal execution=low
PlacementPolicy fastest,pack
Status          Queued
   QueueTime    4m03s 
The scheduler has been suspended.
Job 029361701 is Queued
...

2. To resume dispatching jobs, use the following command:

  % nc cmd vovsh -x 'vtk_server_config scheduler resume'

Note: Any word other than "suspend" will resume the scheduler.