[Kea-users] Kea LFC not executed anymore after some time (Kea 1.2.0)

[Chaigneau, Nicolas]

Hello,


I've observed the issue again.

With a Kea server that does not receive any DHCP packet:
At some point, Kea is still running but LFC is no longer executed.

In Kea log file we don't have "DHCPSRV_MEMFILE_LFC_START" messages anymore.
And the lease files are not modified on disk (they would be if LFC was executed, so this is not just a logging issue).

Kea was started on 2017, November 15th at 16:20:23.
LFC was first executed 10 minutes later, at 16:30:23.
And the last execution of LFC: November 16th, at 16:40:23.
Nothing after that...



Regards,
Nicolas.


> Wait... when I restarted the server, I got logs again... before the shutdown!
> So logging actually still worked. I just didn't have anything being logged.
> 
> 2017-11-15 17:20:45.551 INFO  [kea-dhcp4.dhcp4/29754] DHCP4_SHUTDOWN server shutdown
> 2017-11-15 17:20:47.603 INFO  [kea-dhcp4.dhcp4/28141] DHCP4_STARTING Kea DHCPv4 server version 1.2.0 starting
> 
> 
> The only logs I normally have in Kea logs is LFC execution every 10 minutes:
> 
> 2017-11-16 02:10:47.617 INFO  [kea-dhcp4.dhcpsrv/28141] DHCPSRV_MEMFILE_LFC_START starting Lease File Cleanup
> 2017-11-16 02:10:47.617 INFO  [kea-dhcp4.dhcpsrv/28141] DHCPSRV_MEMFILE_LFC_EXECUTE executing Lease File Cleanup  (...)
> 
> 
> I don't have these logs anymore after some time.
> So... either LFC is no longer executed after a while, or Kea stops writing these log messages ?
> 
> 
> 
> 
> > A few more detail:
> > 
> > 
> > This worked fine before (with the same logrotate configuration), with:
> > - Kea 0.9.1
> > - RHEL 6.4
> > 
> > The issue now appears with:
> > - Kea 1.2.0
> > - RHEL 7.1
> > 
> > 
> > Should I open a ticket for this ? (I'm not sure the problem is with Kea, maybe it's logrotate...)
> > 
> > 
> > 
> > > 
> > > Hello,
> > > 
> > > 
> > > I've set up Kea log rotation with logrotate.
> > > This works for some time, and then it stops working: the new log file stays empty, until the server is restarted.
> > > I'm not sure what's going on... has anyone else had this issue ?
> > > 
> > > I'm using the following options for logrotate:
> > > 
> > >     daily
> > >     rotate 30
> > >     missingok
> > >     nocompress
> > >     copytruncate
> > >     dateext
> > >     extension .log
> > > 
> > > 
> > > I thought "copytruncate" would be good enough, but apparently it is not.
> > > 
> > > Is it possible to send a signal to Kea so that it reopens its log file ?
> > > 
> > > 
> > > Regards,
> > > Nicolas.
> > >
> >
>

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