[Nav-users] navtopology is already running

NAV 5.9.1

Suddenly, since yesterday, a lot (but not all) of the navtopology cron jobs sends an email with "navtopology is already running"

An example:

/var/log/cron Apr 30 09:35:00 <hostname> /usr/sbin/cron[69867]: (navcron) CMD (navtopology --l2 --vlan)

10 minutes later an email arrives

Date: Tue, 30 Apr 2024 09:43:35 +0200 (CEST) Subject: Cron navcron@bjarne navtopology --l2 --vlan

navtopology is already running (69867)

What can trigger this error? var/log/navtopology shows that the job runs as usual. (Last lines in the run is "deleting unused prefixes/vlans")

The one thing that changed before this error turned up is that the server running NAV was moved behind Cisco ACI and a (application centric) firewall.

--Ingeborg