condor_procd man page

condor_procdTrack and manage process families

Synopsis

condor_procd-h

condor_procd-A address-file[options]

Description

condor_procdtracks and manages process families on behalf of the HTCondor daemons. It may track families of PIDs via relationships such as: direct parent/child, environment variables, UID, and supplementary group IDs. Management of the PID families include

* registering new families or new members of existing families

* getting usage information

* signaling families for operations such as suspension, continuing, or killing the family

* getting a snapshot of the tree of families In a regular HTCondor installation, this program is not intended to be used or executed by any human.

The required argument, -A address-file, is the path and file name of the address file which is the named pipe that clients must use to speak with the condor_procd.

Options

-h

Print out usage information and exit.

-D

Wait for the debugger. Initially sleep 30 seconds before beginning normal function.

-C principal

The principalis the UID of the owner of the named pipe that clients must use to speak to the condor_procd.

-L log-file

A file the condor_procdwill use to write logging information.

-E

When specified, another tool such as the procd_ctltool must allocate the GID associated with a process. When this option is notspecified, the condor_procdwill allocate the GID itself.

-P PID

If not specified, the condor_procdwill use the condor_procd's parent, which may not be PID 1 on Unix, as the parent of the condor_procdand the root of the tracking family. When not specified, if the condor_procd's parent PID dies, the condor_procdexits. When specified, the condor_procdwill track this PIDfamily in question and not also exit if the PID exits.

-S seconds

The maximum number of seconds the condor_procdwill wait between taking snapshots of the tree of families. Different clients to the condor_procdcan specify different snapshot times. The quickest snapshot time is the one performed by the condor_procd. When this option is not specified, a default value of 60 seconds is used.

-G min-gid max-gid

If the -Eoption is notspecified, then track process families using a self-allocated, free GID out of the inclusive range specified by min-gidand max-gid. This means that if a new process shows up using a previously known GID, the new process will automatically associate into the process family assigned that GID. If the -Eoption isspecified, then instead of self-allocating the GID, the procd_ctltool must be used to associate the GID with the PID root of the family. The associated GID must still be in the range specified. This is a Linux-only feature.

-K windows-softkill-binary

This is the path and executable name of the condor_softkill.exebinary. It is used to send softkill signals to process families. This is a Windows-only feature.

-I glexec-kill-path glexec-path

Specifies, with glexec-kill-path, the path and executable name of a binary used to send a signal to a PID. The glexecbinary, specified by glexec-path, executes the program specified with glexec-kill-pathunder the right privileges to send the signal.

General Remarks

This program may be used in a stand alone mode, independent of HTCondor, to track process families. The programs procd_ctland gidd_allocare used with the condor_procdin stand alone mode to interact with the daemon and to inquire about certain state of running processes on the machine, respectively.

Exit Status

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

Author

Center for High Throughput Computing, University of Wisconsin-Madison

Info

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