Figured it out: /path/to/syslog-ng/sbin/syslog-ng-ctl show-license-info . Third line in output: Currently-Used-Slots. Regards, Mark Schoonover Infrastructure Engineering Manager ENE : Tools, Instrumentation and Common Services Team Office: 32.8697° N, 116.9711° W Phone : 770-261-7934 Email : mark.schoonover@cigna.com<mailto:mark.schoonover@cigna.com> Confidential, unpublished property of Cigna Health & Life Insurance Co.. Do not duplicate or distribute. Use and distribution limited solely to authorized personnel. ©2016 CIGNA. From: syslog-ng-bounces@lists.balabit.hu [mailto:syslog-ng-bounces@lists.balabit.hu] On Behalf Of Schoonover, Mark E HHHH Sent: Wednesday, March 09, 2016 3:04 PM To: Syslog-ng users' and developers' mailing list Subject: [syslog-ng] NG License Usage Thanks for reading, We had an issue today where a flood of new devices far exceeded our license count. Is there a way to monitor how many licenses are in use? We'd like to set up an alert to let us know we're close to running out of licenses. Thanks! Regards, Mark Schoonover Infrastructure Engineering Manager ENE : Tools, Instrumentation and Common Services Team Office: 32.8697° N, 116.9711° W Phone : 770-261-7934 Email : mark.schoonover@cigna.com<mailto:mark.schoonover@cigna.com> Confidential, unpublished property of Cigna Health & Life Insurance Co.. Do not duplicate or distribute. Use and distribution limited solely to authorized personnel. ©2016 CIGNA. ------------------------------------------------------------------------------ CONFIDENTIALITY NOTICE: If you have received this email in error, please immediately notify the sender by e-mail at the address shown. This email transmission may contain confidential information. This information is intended only for the use of the individual(s) or entity to whom it is intended even if addressed incorrectly. Please delete it from your files if you are not the intended recipient. Thank you for your compliance. Copyright (c) 2016 Cigna ============================================================================== ------------------------------------------------------------------------------ CONFIDENTIALITY NOTICE: If you have received this email in error, please immediately notify the sender by e-mail at the address shown. This email transmission may contain confidential information. This information is intended only for the use of the individual(s) or entity to whom it is intended even if addressed incorrectly. Please delete it from your files if you are not the intended recipient. Thank you for your compliance. Copyright (c) 2016 Cigna ==============================================================================