condor_off

Shutdown HTCondor daemons

Synopsis

condor_off [-help | -version ]

Description

condor_off shuts down a set of the HTCondor daemons running on a set of one or more machines. It does this cleanly so that checkpointable jobs may gracefully exit with minimal loss of work.

The command condor_off without any arguments will shut down all daemons except condor_master, unless -annex name is specified. The condor_master can then handle both local and remote requests to restart the other HTCondor daemons if need be. To restart HTCondor running on a machine, see the condor_on command.

With the -daemon master option, condor_off will shut down all daemons including the condor_master. Specification using the -daemon option will shut down only the specified daemon.

For security reasons of authentication and authorization, this command requires ADMINISTRATOR level of access.

Options

-help
Display usage information

-version
Display version information

-graceful
The default. If jobs are running, wait for up to the configured grace period for them to finish, then exit

-fast
Quickly shutdown daemons, immediately evicting any running jobs. A minimum of the first two characters of this option must be specified, to distinguish it from the -force-graceful command.

-peaceful
Wait indefinitely for jobs to finish

-force-graceful
Force a graceful shutdown, even after issuing a -peaceful command. A minimum of the first two characters of this option must be specified, to distinguish it from the -fast command.

-annex name
Turn off master daemons in the specified annex. By default this will result in the corresponding instances shutting down.

-debug
Causes debugging information to be sent to stderr, based on the value of the configuration variable TOOL_DEBUG.

-pool centralmanagerhostname[:portnumber]
Specify a pool by giving the central manager’s host name and an optional port number

-name hostname
Send the command to a machine identified by hostname

hostname
Send the command to a machine identified by hostname

-addr “<a.b.c.d:port>”
Send the command to a machine’s master located at “<a.b.c.d:port>”

“<a.b.c.d:port>”
Send the command to a machine located at “<a.b.c.d:port>”

-constraint expression
Apply this command only to machines matching the given ClassAd expression

-all
Send the command to all machines in the pool

-daemon daemonname
Send the command to the named daemon. Without this option, the command is sent to the condor_master daemon.

Graceful vs. Peaceful vs Fast

A “fast” shutdown will cause the requested daemon to exit. Jobs running under a startd that is shutdown fast will be evicted. Jobs running on a schedd that is shutdown fast will be left running for their job lease duration (default of 20 minutes). (That is, assuming the corresponding startd is not also being shut down). If that schedd restarts before the job lease expires, it will reconnect to these running jobs and continue to run them, as long as the schedd and startd are running.

A “graceful” shutdown of a schedd is functionally the same as a “fast” shutdown of a schedd.

A “graceful” shutdown of a startd that has jobs running under it causes the startd to wait for the jobs to exit of their own accord, up to the MaxJobRetirementTime. After the MaxJobRetirementTime, the startd will evict any remaining running jobs and exit.

A “peaceful” shutdown of a startd or schedd will cause that daemon to wait indefinitely for all existing jobs to exit before shutting down. During this time, no new jobs will start.

Exit Status

condor_off will exit with a status value of 0 (zero) upon success, and it will exit with the value 1 (one) upon failure.

Examples

To shut down all daemons (other than condor_master) on the local host:

$ condor_off

To shut down only the condor_collector on three named machines:

$ condor_off  cinnamon cloves vanilla -daemon collector

To shut down daemons within a pool of machines other than the local pool, use the -pool option. The argument is the name of the central manager for the pool. Note that one or more machines within the pool must be specified as the targets for the command. This command shuts down all daemons except the condor_master on the single machine named cae17 within the pool of machines that has condor.cae.wisc.edu as its central manager:

$ condor_off  -pool condor.cae.wisc.edu -name cae17