Hi Team,
I am new to this community and hoping to get some help with my below query.
We are collecting some network logs from client devices to a Syslog collector
(A) which is managed by Vendor and the next hop is on the syslog collector (B)
managed by us. On Collector B, I see the events are getting parsed with the IP
of Collector A, meaning I am not seeing the actual device IP on my collector
instead it shows Collector A IP address as sender IP. How / What config
changes I need to make on my collector B rsyslog.conf file to see the actual
client device IP/Hostname (using the syslog header) ?
I tried writing some template to extract hostname from the event as below but
it is not working and I do not see any errors aswel when I run rsyslogd -N1.
template(name="LB_dynaFile" type="string"
string="/var/log/syslog/LB/%!extracted_LB_hostname%/%$YEAR%-%$MONTH%-%$DAY%-%$HOUR%.log")
template(name="LB_host_extraction" type="string"
string="%msg:R,ERE,1,ZERO:\"GMT(.+) 0-PPE-0\"--end%")
if $rawmsg contains "IB*******2-m**i" then {
reset $!extracted_LB_hostname = exec_template("LB_host_extraction");
action(type="omfwd" target="1xx.1x.0.1x:1xx0" protocol="tcp"
template="RSYSLOG_SyslogProtocol23Format")
action(type="omfile" dynaFile="LB_dynaFile"
template="RSYSLOG_SyslogProtocol23Format")
}
PS - I tested regex on rsyslog regex tester and it is working.
Sample event
<134>1 2023-10-10T18:22:07.569574+00:00 10.194.237.27 - - - -
10/10/2023:18:21:58 GMT IB*******2-m**i 0-PPE-0 : default TCP CONN_TERMINATE
287440514 0 : Source 1x.1xx.0.1xx:80 - Destination 1x.1xx.1xx.1x:3xxx7 - Start
Time 10/10/2023:18:21:16 GMT - End Time 10/10/2023:18:21:58 GMT -
Total_bytes_send 1 - Total_bytes_recv 1
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