condor_ advertise can also be used to invalidate and delete ClassAds currently held by the condor_ collector daemon. In this case the update-command will be one of the following strings:
For any of these INVALIDATE commands, the ClassAd in the required file consists of three entries. The file contents will be similar to:
MyType = "Query" TargetType = "Machine" Requirements = Name == "condor.example.com"The definition for MyType is always Query. TargetType is set to the MyType of the ad to be deleted. This MyType is DaemonMaster for the condor_ master ClassAd, Machine for the condor_ startd ClassAd, Scheduler for the condor_ schedd ClassAd, and Negotiator for the condor_ negotiator ClassAd. Requirements is an expression evaluated within the context of ads of TargetType. When Requirements evaluates to True, the matching ad is invalidated. A full example is given below.
For those administrators who do need condor_ advertise, you can optionally include these attributes:
DaemonStartTime - The time the service you are advertising started running. Measured in seconds since the Unix epoch.
UpdateSequenceNumber - An integer that begins at 0 and increments by one each time you re-advertise the same ad.
If both of the above are included, the condor_ collector will automatically include the following attributes:
UpdatesTotal - The actual number of advertisements for this daemon that the condor_ collector has seen.
UpdatesLost - The number of advertisements that for this daemon that the condor_ collector expected to see, but did not.
UpdatesSequenced - The total of UpdatesTotal and UpdatesLost.
UpdatesHistory - See COLLECTOR_DAEMON_HISTORY_SIZE in section 3.3.17.
Assume that a machine called condor.example.com is turned off, yet its condor_ startd ClassAd does not expire for another 20 minutes. To avoid this machine being matched, an administrator chooses to delete the machine's condor_ startd ClassAd. Create a file (called remove_file in this example) with the three required attributes:
MyType = "Query" TargetType = "Machine" Requirements = Name == "condor.example.com"
This file is used with the command:
% condor_advertise INVALIDATE_STARTD_ADS remove_file
condor_ advertise will exit with a status value of 0 (zero) upon success, and it will exit with the value 1 (one) upon failure.
U.S. Government Rights Restrictions: Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of The Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 or subparagraphs (c)(1) and (2) of Commercial Computer Software-Restricted Rights at 48 CFR 52.227-19, as applicable, Condor Team, Attention: Professor Miron Livny, 7367 Computer Sciences, 1210 W. Dayton St., Madison, WI 53706-1685, (608) 262-0856 or firstname.lastname@example.org.
See the Condor Version 6.8.7 Manual for additional notices.