dhcpd.log file not rolling

[Glenn Satchell]

That's right. dhcpd talks to (r)syslog, so no need to restart dhcpd - 
need to refresh (r)syslog so that it talks to the new log file.

Have a look at the file that does the rotations for messages, named, 
etc, and add the appropriate syslog command there. Maybe something like 
"pkill -HUP rsyslog" since restarting syslog will interrupt logging 
briefly for all services.

By (r)syslog, I mean rsyslog or syslog as appropriate for your OS, not 
just RH6.

regards,
-glenn

On 01/12/11 08:20, jim wrote:
> Peter and Gene,
>
> Thanks for the replies, your input has fixed me up.
> Looking in to syslog-ng
> The "keeps its file descriptors open" got me to review more and I see I
> needed to add to /etc/logrotate.d/dhcpd
>
>          /sbin/service rsyslog restart > /dev/null
>
> This got me going, now rolling the log file as expected.
>
> thanks!
>
>
> On Tue, Jan 11, 2011 at 9:16 AM, Peter Rathlev <peter at rathlev.dk
> <mailto:peter at rathlev.dk>> wrote:
>
>     On Tue, 2011-01-11 at 08:36 -0500, jim wrote:
>      > Upgraded to Red Hat Enterprise 6 and DHCP Server 4.1.1-P1 last week
>      > and having a problem with the rolling of the dhcp.log file.
>      >
>      > Creates the new file dhcpd.log but dhcp sometimes is still
>     putting the
>      > log messages in the wrong/old file.
>      > Creates the new file at 4:00 AM like on the old system, but the log
>      > messages are still going in to the file dhcpd.log-20110110 for couple
>      > of days.
>
>     Can you see when the currently running dhcpd was started? What is the
>     path to the running dhcpd executable?
>
>     It seems that the running dhcpd somehow isn't restarted, and it thus
>     keeps its file descriptors open.
>
>     ...
>      > In the file /etc/logrotate.d/dhcpd have
>      >  /var/log/dhcpd.log {
>      >      daily
>      >      rotate 60
>      >      missingok
>      >      create 0644 root root
>      >      postrotate
>      >          /sbin/service dhcpd restart > /dev/null
>      >      endscript
>      >  }
>
>     I'm not familiar with RHEL 6, but if your 4.1.1-P1 is compiled from
>     source it's probably placed under /usr/local/sbin/ instead
>     of /usr/sbin/. And the "service" script might point at /usr/sbin/dhcpd
>     (look in /etc/init.d/dhcpd).
>
>     Otherwise you could remove the "> /dev/null" from the postrotate script
>     to maybe see some kind of error.
>
>     --
>     Peter