Tasker Health Checks
By default, the vovtasker does not perform many health checks. If the jobs can be executed successfully, that is normally enough of a check.
In some large farms, it may be useful to activate additional checks, by invoking the
tasker with the option -H [PpDdWwUu], where
the lower case characters mean "disable" and the upper case characters mean "enable"
of a particular check.
Built-in Checks in vovtasker
| Check Name | Char | Description |
|---|---|---|
| DiskSpace | d | Check space in /tmp and /usr/tmp |
| WritePerm | w | Check write permissions in /tmp and /usr/tmp |
| Portmap | p | Check that the portmap daemon is responsive |
| UserScript | u | Check by executing an adminstrator-created, installation-wide script (see below) |
From the command line, you can use the option
-H in vovtasker, as in the following example, which activates only the
DiskSpace test:
% vovtasker -H Dwpu -a my_test_tasker
From the taskers.tcl file, you can use the
option
-health STRING in a similar
way:## Fragment of taskers.tcl
vtk_tasker_define myHost -name my_test_tasker -health DWPU
User Created Script
When enabled, the vovtasker will run an adminstrator-created
script placed in a specific location in the installation. There are security
considerations in using this check, as the script will be run by any project that
enables the UserScript checks.:
- The script must be placed at $VOVDIR/local/tasker/health_user_script.csh
- The script should be secured appropriately to prevent unauthorized modification.
- The script will run as the user under which the project was started.