Resetting the Syslog-ng License (311508)

Resolution 1:

Simply restart the Syslog-ng service to clear out the licenses used.

Resolution 2:

Upgrade to version 7.0.16 of Syslog-ng PE.

Starting in version 7.0.16 of Syslog-ng PE the inclusion of the global option

reset-license-counter(yes)

has been made, aimed specifically for those working with cloud environments, however, it can be applied for any situation in which a reset of the license is needed.

Workaround:

Create a script, similar to what is below using CRON, and run it every night at midnight replacing the n in threshold=n with the number of licenses that the Syslog-ng instance is licensed for.

#!/bin/sh

threshold=n

license_used=$(/opt/syslog-ng/sbin/syslog-ng-ctl show-license-info | egrep Currently-Used-Slots | sed "s/.*: //" )

license_total=$(/opt/syslog-ng/sbin/syslog-ng-ctl show-license-info | egrep Host-Limit | sed "s/.*: //" )

license_usage=$( /opt/syslog-ng/sbin/syslog-ng-ctl show-license-info | egrep Usage | sed "s/.*: //" )

license_percentage_above_threshold=$(awk 'BEGIN{ print "'$license_used'"/"'$license_total'" >= ("'$threshold'"/100.0) }')
license_completely_used=$(awk 'BEGIN{ print "'$license_used'"/"'$license_total'" >= 1.0 }')

if [ "$license_completely_used" -eq "1" ]; then
logger WARNING You are currently using $license_used of $license_total licenses. Syslog-ng will now restart to clear the license counter.
systemctl restart syslog-ng

elif [ "$license_percentage_above_threshold" -eq "1" ]; then
logger WARNING You are currently using $license_used licenses which is over $threshold% of your $license_total available licenses.

else
logger You are currently using $license_used licenses and are using $license_usage of your $license_total available licenses.

fi