Log file monitoring, fire up trigger, combine nodata()

 23057:20180831:222543.307 forced execution of the housekeeper
 23057:20180831:222543.307 executing housekeeper
 23057:20180831:222545.855 housekeeper [deleted 9211 hist/trends, 44 items/triggers, 111 events, 0 problems, 0 sessions, 0 alarms, 0 audit items in 2.547598 sec, idle for 1 hour(s)]

Nitice the space starting at every line!

To extract the time stamp we must use format:

pppppp:yyyyMMdd:hhmmss

If we place line by line it looks like:

 23057:20180831:222543.307 executing housekeeper
pppppp:yyyyMMdd:hhmmss

the : symbol is obligate!

Key:

log[/var/log/zabbix/zabbix_server.log,executing housekeeper]

Log time format:

pppppp:yyyyMMdd:hhmmss

Template:

I can simulate this trigger with command:

zabbix_server -R housekeeper_execute