# condor_checkpoint¶

send a checkpoint command to jobs running on specified hosts

## Synopsis¶

condor_checkpoint [-help | -version ]

condor_checkpoint [-debug ] [-pool centralmanagerhostname[:portnumber]] [ -name hostname | hostname | -addr “<a.b.c.d:port>” | “<a.b.c.d:port>” | -constraint expression | -all ]

## Description¶

condor_checkpoint sends a checkpoint command to a set of machines within a single pool. This causes the startd daemon on each of the specified machines to take a checkpoint of any running job that is executing under the standard universe. The job is temporarily stopped, a checkpoint is taken, and then the job continues. If no machine is specified, then the command is sent to the machine that issued the condor_checkpoint command.

The command sent is a periodic checkpoint. The job will take a checkpoint, but then the job will immediately continue running after the checkpoint is completed. condor_vacate, on the other hand, will result in the job exiting (vacating) after it produces a checkpoint.

If the job being checkpointed is running under the standard universe, the job produces a checkpoint and then continues running on the same machine. If the job is running under another universe, or if there is currently no HTCondor job running on that host, then condor_checkpoint has no effect.

There is generally no need for the user or administrator to explicitly run condor_checkpoint. Taking checkpoints of running HTCondor jobs is handled automatically following the policies stated in the configuration files.

## Options¶

-help
Display usage information
-version
Display version information
-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
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

## Exit Status¶

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

## Examples¶

To send a condor_checkpoint command to two named machines:

% condor_checkpoint  robin cardinal


To send the condor_checkpoint command to a machine 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 sends the command to a the single machine named cae17 within the pool of machines that has condor.cae.wisc.edu as its central manager:

% condor_checkpoint -pool condor.cae.wisc.edu -name cae17


## Author¶

Center for High Throughput Computing, University of Wisconsin-Madison