[syslog-ng] how to change localhost to hostname

24 Apr 2008

      We have a bunch of servers whose applications write error/debug messages
to 127.0.0.1 port 514. We want syslog-ng on each of the servers to
forward the messages to a central logging server which also forwards the
messages to zenoss running on the central logger server. The problem
with our configuration (which I have copied here) is that no matter
which server originates the message, they show up on the central server
as originating from localhost - in both zenoss and in the /var/log files
We want them to be shown as originating from the server that produced
the messages. We can add a template on the central logger to log the
messages as coming form $FROM_HOST, but while that solves the problem
for the /var/log messages, zenoss still shows the messages as coming
from  localhost. Please help, we are new to using syslog-ng. We are
using syslog-ng version 2.0.8 on Red Hat Linux.

-----------------server syslog-ng.conf (slightly abbreviated)

options {

use_dns(yes);

use_fqdn(no);

chain_hostnames(no);

keep_hostnames(yes);

:::

};

source java {

udp(ip(127.0.0.1) port(514));

};

destination remote {

udp("192.168.99.105" port(514));

}

log { source(java); destination(remote); };

------------------central logger config file

options {

        use_time_recvd( no );

        time_reopen(1);

        long_hostnames(off);

        sync(0);

        use_dns(yes);

        use_fqdn(no);

        chain_hostnames(no);

        keep_hostname(yes);

        create_dirs(yes);

        stats(3600);

};

source src {

        unix-stream("/dev/log");

        pipe("/proc/kmsg");

        internal();

        udp(ip(0.0.0.0) port(514));

         };

destination everything {

        file("/var/log/$HOST_FROM.$MONTH$DAY$YEAR" template("$HOST_FROM
$HOUR:$MIN:$SEC $MSG\n"));

};

destination zenoss {

        udp( "localhost" port(5514) );

        #udp( "localhost" port(5514) template("<$PRI>$DATE $HOST_FROM
$MSG\n") );

};

log { source(src); destination(everything); };

log { source(src); destination(zenoss); };

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[syslog-ng] how to change localhost to hostname

D'Souza, Alfred