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ltb-project / nagios-plugins

Plugins for Nagios
GNU General Public License v3.0
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Delta CSN is not correct in Syncrepl plugin #1

Closed coudot closed 7 years ago

coudot commented 7 years ago

Found by Geert Hendrickx:

I noticed an issue with the way you calculate the time difference:

my $deltacsn = abs( $mastercsn_elts[0] - $slavecsn_elts[0] );

and then print:

"WARNING - directories are not in sync with $master_host - $deltacsn seconds late (W:$warning - C:$critical)$perfparse";

However the delta between two ContextCSN timestamps in decimal notation cannot simply be interpreted as seconds...

For example, take 2016/09/21 13:02:23 and 2016/09/21 12:07:24. You calculate: 20160921130223 - 20160921120724 and print: "9499 seconds late", while it is fact only 54:59 or 3299 seconds. You need to substract seconds/minutes/hours(days?) individually and then glue them back together.

It's not just a display problem. Eg. an alert threshold of 300 seconds (5 minutes) is reached already after 3:00 (3 minutes).