[netflow-tools] Empty log

Walter Weiss weweiss at mindspring.com
Thu Jun 28 08:57:50 EST 2007


Hi;

            I have installed netflowd on the latest version of Fedora.  It
all seems to install ok.  I have the following information from the command
lines etc.  But nothing ever writes to the log.  Is there anything I can do
to troubleshoot where the data is lost?  Thanks

 

Log entries in the messages file-

 

Jun 27 13:17:26 flow_collector flowd[3403]: Received max number of packets
(512)
 on fd 3
Jun 27 13:47:26 flow_collector flowd[3403]: Received max number of packets
(512)
 on fd 3
Jun 27 14:17:26 flow_collector flowd[3403]: Received max number of packets
(512)
 on fd 3
Jun 27 14:47:26 flow_collector flowd[3403]: Received max number of packets
(512)
 on fd 3
Jun 27 15:17:26 flow_collector flowd[3403]: Received max number of packets
(512)
 on fd 3
 
verified process is running
 
[root at flow_collector etc]# ps -ef | grep flow
avahi     2585     1  0 Jun26 ?        00:00:00 avahi-daemon: running
[flowcollector.local]
root      3402     1  0 Jun26 ?        00:00:00 flowd: monitor
_flowd    3403  3402  0 Jun26 ?        00:00:00 flowd: net
root      6065  6021  0 11:36 pts/0    00:00:00 grep flow
[root at flow_collector etc]# ps -ef | grep syslog
root      3370     1  0 Jun26 ?        00:00:00 syslogd -m 0 -a
/var/empty/dev/log
root      6067  6021  0 11:36 pts/0    00:00:00 grep syslog
 
verified port seems to be listenting
 
[root at flow_collector etc]# netstat -apn | grep flow
udp        0      0 205.152.6.88:9995           0.0.0.0:*

3403/flowd: net
unix  2      [ ]         DGRAM                    11493  3403/flowd: net
unix  3      [ ]         STREAM     CONNECTED     11444  3403/flowd: net
unix  3      [ ]         STREAM     CONNECTED     11443  3402/flowd: monitor
 
checked for listening files and they seem to be ok
 
[root at flow_collector etc]# lsof -i
COMMAND    PID    USER   FD   TYPE DEVICE SIZE NODE NAME
portmap   2076     rpc    3u  IPv4   6641       UDP *:sunrpc
portmap   2076     rpc    4u  IPv4   6642       TCP *:sunrpc (LISTEN)
rpc.statd 2102 rpcuser    3w  IPv4   6716       UDP *:1009
rpc.statd 2102 rpcuser    6u  IPv4   6693       UDP *:1006
rpc.statd 2102 rpcuser    7u  IPv4   6753       TCP *:1012 (LISTEN)
hpiod     2376    root    0u  IPv4   7305       TCP flow_collector:2208
(LISTEN)
python    2381    root    4u  IPv4   7321       TCP flow_collector:2207
(LISTEN)
cupsd     2398    root    3u  IPv4   7369       TCP flow_collector:ipp
(LISTEN)
cupsd     2398    root    5u  IPv4   7372       UDP *:ipp
sshd      2417    root    3u  IPv6   7420       TCP *:ssh (LISTEN)
sendmail  2442    root    4u  IPv4   7513       TCP flow_collector:smtp
(LISTEN)
yum-updat 2568    root    8u  IPv4  10063       TCP
flow_collector:45266->admin.fedora.redhat.com:http
(CLOSE_WAIT)
avahi-dae 2585   avahi   13u  IPv4   7822       UDP *:mdns
avahi-dae 2585   avahi   14u  IPv6   7823       UDP *:mdns
avahi-dae 2585   avahi   15u  IPv4   7824       UDP *:filenet-tms
avahi-dae 2585   avahi   16u  IPv6   7825       UDP *:filenet-rpc
flowd     3403  _flowd    3u  IPv4  11442       UDP flow_collector:palace-4
sshd      6019    root    3r  IPv6  72128       TCP
flow_collector:ssh->205.152.6.166:catchpole
(ESTABLISHED)
[root at flow_collector etc]#
 
Seems to indicate I am getting packets
 
[root at flow_collector /]# netflow v.9 packet (len 44) 1 recs, source
0x00000100
netflow v.9 options flowset
output_flow_flush: flushing output queue len 0
 
 
Files associated with the flowd process
 
[root at flow_collector /]# lsof -c flowd
COMMAND  PID   USER   FD   TYPE     DEVICE    SIZE    NODE NAME
flowd   6371   root  cwd    DIR      253,0    4096 7456541 /usr/local/sbin
flowd   6371   root  rtd    DIR      253,0    4096       2 /
flowd   6371   root  txt    REG      253,0   97616 7481639
/usr/local/sbin/flowd
flowd   6371   root  mem    REG      253,0   46740 7816295
/lib/libnss_files-2.5.so
flowd   6371   root  mem    REG      253,0  121684 7816881 /lib/ld-2.5.so
flowd   6371   root  mem    REG      253,0 1576920 7816883 /lib/libc-2.5.so
flowd   6371   root    0u   CHR        1,3            2132 /dev/null
flowd   6371   root    1u   CHR        1,3            2132 /dev/null
flowd   6371   root    2u   CHR      136,1               3 /dev/pts/1
flowd   6371   root    4u  unix 0xf731e800           18855 socket
flowd   6373 _flowd  cwd    DIR      253,0    4096  425182 /var/empty
flowd   6373 _flowd  rtd    DIR      253,0    4096  425182 /var/empty
flowd   6373 _flowd  txt    REG      253,0   97616 7481639
/usr/local/sbin/flowd
flowd   6373 _flowd  mem    REG      253,0   46740 7816295
/lib/libnss_files-2.5.so
flowd   6373 _flowd  mem    REG      253,0  121684 7816881 /lib/ld-2.5.so
flowd   6373 _flowd  mem    REG      253,0 1576920 7816883 /lib/libc-2.5.so
flowd   6373 _flowd    0u   CHR        1,3            2132 /dev/null
flowd   6373 _flowd    1u   CHR        1,3            2132 /dev/null
flowd   6373 _flowd    2u   CHR      136,1               3 /dev/pts/1
flowd   6373 _flowd    3u  IPv4      18854             UDP
flow_collector:palace-4
flowd   6373 _flowd    4u   REG      253,0       0  230572
/usr/local/flowd/yort_test
flowd   6373 _flowd    5u  unix 0xf731e300           18856 socket
flowd   6373 _flowd    6u  unix 0xf731c300           18881 socket
[root at flow_collector /]#

 

 

I installed the debug info rpm but am not sure how to do anything with it.

 

Here is the debug for the start up of the file.

 

[root at flow_collector sbin]# flowd -d

read_config: entering

child_get_config: entering

drop_privs: dropping privs without chroot

send_config: entering fd = 4

send_config: done

child_get_config: child config done

recv_config: entering fd = 3

recv_config: ready to receive config

Listener for [205.152.6.88]:9995 fd = 3

Increased socket receive buffer from 110592 to 524288

Setting socket send buf to 1024

privsep_init: entering

drop_privs: dropping privs with chroot

init_pfd: entering (num_fds = 0)

init_pfd: done (num_fds = 2)

client_open_log: entering

answer_open_log: entering

 

 

So the bottom line is I seem to be listening and receiving packets but
nothing goes to the log. What can I do to troubleshoot further.

 

Thanks

 

Walt Weiss

 

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