Getting Data In

Syslog-ng filter filter props/transforms for data routing


Hello Splunkers,

Earlier we were using central syslog-ng server to capture all /var/log/messages from hosts now we have installed UF on unix servers and we are going with UF monitoring instead of syslog route
We dont want capture all events in /var/log/messages, below ones is previous filters in syslog-ng.conf files in host.
So now my question is how i can write a transform/props to reflects same like below syslog-ng.conf file and deploy locally in forwards i order to capture /var/log/messages to monitor.

# destinations
destination d_sshpam { file("/var/adm/syslog/sshd.log"); };
destination d_sshpamb { file("/var/adm/syslog/sshd.log"); };
#destination d_sapdelete { file("/dev/null"); };
#destination d_sapruntime { file("/dev/null"); };
#destination d_emfbackground { file("/dev/null"); };
destination d_messages { file("/var/adm/syslog/syslog.log"); };

destination d_logserver {syslog("xx.xx.xx.xx" transport(tcp)); };

log { source(s_local); filter(f_sshpam); destination(d_sshpam); flags(final); };

log { source(s_local); filter(f_sshpamb); destination(d_sshpamb); flags(final); };

#log { source(s_local); filter(f_sapdelete); destination(d_sapdelete); flags(final); };
#log { source(s_local); filter(f_sapruntime); destination(d_sapruntime); flags(final); };

#log { source(s_local); filter(f_emfbackground); destination(d_emfbackground); flags(final); };

log {

0 Karma


Hi Splunk_citizen,
you can filter data on Indexers or on Heavy Forwarders.
To filter events you can see at
In easy words, you have to:

  • identify regexes of the logs you want to index or to discard,
  • indert in props.con the following row in the sourcetype of your syslog:

    TRANSFORMS-filter = setnull,setparsing

  • insert in transforms.conf the following rows (beware that the stanza's names are the same of TRANSFORMS command:

    REGEX = .
    DEST_KEY = queue
    FORMAT = nullQueue
    REGEX = my_regex
    DEST_KEY = queue
    FORMAT = indexQueue


0 Karma


Thank you Casello,

That is the syslog file and not sure what kind of regex i have to build.

0 Karma
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