add logger config to pfdns.conf

[julsemaan]

Description

Allows to configure pfdns logging by using our standard golang logging library

Impacts

pfdns logging

Issue

fixes #3635

Delete branch after merge

YES

NEWS file entries

Enhancements

• pfdns now uses the PacketFence standard Golang logging library

[MuriloCalegari]

Hi!

Does this change the actual output of pfdns logs in the file? We have a script that relies on how the serve dns logs are written today, is it possible that this patch is going to brake it?

[fdurand]

Yes it will but to have the same output as before you will need to set the log level to DEBUG.

[MuriloCalegari]

Hi,

I've just recently updated PacketFence to v8.2 and set pfdns.conf log level to DEBUG. After configreload hard and restarting pfdns service I see on pfdns.log:

Nov 9 08:52:11 prometeu pfdns: Using configuration set log level: DEBUG

But I can only see these types of logs:

Nov 9 08:59:51 prometeu pfdns: 192.168.21.41 - [09/Nov/2018:08:59:51 -0200] "A IN www.google.com. udp 32 false 512" NOERROR qr,aa,rd 48 6.974433ms

Logs like Returned portal or serve dns are not being registered.

[MuriloCalegari]

This is the complete output of the pfdns.log initialization:

Nov 9 09:14:29 prometeu pfdns: Using configuration set log level: DEBUG
Nov 9 09:14:29 prometeu pfdns: Using configuration set log level: DEBUG
Nov 9 09:14:29 prometeu pfdns: .:54
Nov 9 09:14:29 prometeu pfdns: .:53
Nov 9 09:14:29 prometeu pfdns: 2018/11/09 09:14:29 [INFO] CoreDNS-0.9.9
Nov 9 09:14:29 prometeu pfdns: 2018/11/09 09:14:29 [INFO] linux/amd64, go1.9.3,
Nov 9 09:14:29 prometeu pfdns: CoreDNS-0.9.9
Nov 9 09:14:29 prometeu pfdns: linux/amd64, go1.9.3,

[julsemaan]

@LordeRamen

I've pushed a fix for that, it seems that the rsyslog rule on the programname only worked with equals so I made a patch so pfdns initializes the logging framework with the right process name (defaults to the binary path)

Tomorrow, the new binary will be in the maintenance along with the updated rsyslog configuration, apply the following instructions:

# /usr/local/pf/addons/pf-maint.pl
# cp /usr/local/pf/conf/pfdns.conf.example /usr/local/pf/conf/pfdns.conf
# /usr/local/pf/bin/pfcmd service pf restart

[MuriloCalegari]

@julsemaan

Hi, it's working now.

I noticed that pfdns.log moved to a .gz file at an unusual time (it used to be around 3 A.M., now it just did it at 9:22 A.M.), and also there are some logs from day 09 at day 12 file. What are the new rules that controls this?

[julsemaan]

This is the logrotate configuration in /etc/logrotate.d/ but I don't believe this change should have done anything to the time its being invoked