Hello,

the log_custom does not implement any syslog-kind-of-protocol, it simply sends out the plain log message to a remote target, it does not rely on LOG_LOCAL0 at all.

During startup, till the config is parsed and modules initialized, various logs can go to the local system, not being handled by log_custom.

Cheers,
Daniel

Hello Kamailio community

kamailio v5.5.4

debian10

log_facility is not always 'LOCAL0' when loadmodule log_custom.so

cat /etc/kamailio/kamailio.cfg

```

debug=3

log_stderror=no

log_facility=LOG_LOCAL0

children=1

listen=udp:0.0.0.0:5060

log_engine_type="udp"

log_engine_data="127.0.0.1:514"

loadmodule "pv.so"

alias="test.com"

loadmodule "sl.so"

loadmodule "corex.so"

loadmodule "kex.so"

loadmodule "log_custom.so"

request_route {

        if (uri != myself) {

                sl_send_reply("403", "Not relaying");

                exit;

        }

        sl_send_reply("200", "OK");

        exit;

}

```

cat /etc/rsyslog.conf

```

# /etc/rsyslog.conf configuration file for rsyslog

#

# For more information install rsyslog-doc and see

# /usr/share/doc/rsyslog-doc/html/configuration/index.html

#################

#### MODULES ####

#################

module(load="imuxsock") # provides support for local system logging

module(load="imklog")   # provides kernel logging support

#module(load="immark")  # provides --MARK-- message capability

# provides UDP syslog reception

module(load="imudp")

input(type="imudp" port="514")

# provides TCP syslog reception

module(load="imtcp")

input(type="imtcp" port="514")

###########################

#### GLOBAL DIRECTIVES ####

###########################

#

# Use traditional timestamp format.

# To enable high precision timestamps, comment out the following line.

#

#$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

$ActionFileDefaultTemplate RSYSLOG_DebugFormat

#

# Set the default permissions for all log files.

#

$FileOwner root

$FileGroup adm

$FileCreateMode 0640

$DirCreateMode 0755

$Umask 0022

#

# Where to place spool and state files

#

$WorkDirectory /var/spool/rsyslog

#

# Include all config files in /etc/rsyslog.d/

#

$IncludeConfig /etc/rsyslog.d/*.conf

###############

#### RULES ####

###############

#

# First some standard log files.  Log by facility.

#

auth,authpriv.*                 /var/log/auth.log

*.*;auth,authpriv.none          -/var/log/syslog

#cron.*                         /var/log/cron.log

daemon.*                        -/var/log/daemon.log

kern.*                          -/var/log/kern.log

lpr.*                           -/var/log/lpr.log

mail.*                          -/var/log/mail.log

user.*                          -/var/log/user.log

#

# Logging for the mail system.  Split it up so that

# it is easy to write scripts to parse these files.

#

mail.info                       -/var/log/mail.info

mail.warn                       -/var/log/mail.warn

mail.err                        /var/log/mail.err

#

# Some "catch-all" log files.

#

*.=debug;\

        auth,authpriv.none;\

        news.none;mail.none     -/var/log/debug

*.=info;*.=notice;*.=warn;\

        auth,authpriv.none;\

        cron,daemon.none;\

        mail,news.none          -/var/log/messages

#

# Emergencies are sent to everybody logged in.

#

*.emerg                         :omusrmsg:*

```

cat /var/log/messages

```

Debug line with all properties:

FROMHOST: 'kam', fromhost-ip: '127.0.0.1', HOSTNAME: 'kam', PRI: 134,

syslogtag 'kamailio:', programname: 'kamailio', APP-NAME: 'kamailio', PROCID: '-', MSGID: '-',

TIMESTAMP: 'Jul  4 10:25:07', STRUCTURED-DATA: '-',

msg: ' INFO: <core> [core/sctp_core.c:74]: sctp_core_check_support(): SCTP API not enabled - if you want to use it, load sctp module'

escaped msg: ' INFO: <core> [core/sctp_core.c:74]: sctp_core_check_support(): SCTP API not enabled - if you want to use it, load sctp module'

inputname: imuxsock rawmsg: '<134>Jul  4 10:25:07 kamailio: INFO: <core> [core/sctp_core.c:74]: sctp_core_check_support(): SCTP API not enabled - if you want to use it, load sctp module'

$!:

$.:

$/:

-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda