Interesting... it's the same fd 0 problem (fd 0 should be a legal file
descriptor, but RH9 socket() code hates it and hangs - except on Luca's
computer).

-----Burton


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf
Of Kouprie, Robbert
Sent: Tuesday, September 16, 2003 5:07 AM
To: '[EMAIL PROTECTED]'
Subject: FW: [Ntop-dev] NetFlow plugin thread not started at ntop
startup


Put some print statements in the NetFlow plugin code. Especially this check
after socket() does it:

--- ntop/plugins/netflowPlugin.c.orig   2003-09-16 10:52:39.000000000 +0200
+++ ntop/plugins/netflowPlugin.c        2003-09-16 12:03:17.000000000 +0200
@@ -105,6 +105,7 @@
 static void setNetFlowInSocket() {
   struct sockaddr_in sockIn;
   int sockopt = 1, i;
+  errno = 0;

   if(myGlobals.netFlowInSocket > 0) {
     traceEvent(CONST_TRACE_ALWAYSDISPLAY, "NETFLOW: Collector terminated");
@@ -112,8 +113,16 @@
   }

   if(myGlobals.netFlowInPort > 0) {
+
     myGlobals.netFlowInSocket = socket(AF_INET, SOCK_DGRAM, 0);

+    if((myGlobals.netFlowInSocket <= 0) || (errno != 0) ) {
+      traceEvent(CONST_TRACE_INFO, "NETFLOW: Unable to create a socket -
returned %d, error is '%s'(%d)",
+                myGlobals.netFlowInSocket, strerror(errno), errno);
+      exit(-1);
+    }
+    traceEvent(CONST_TRACE_INFO, "NETFLOW: Created a socket (%d)",
myGlobals.netFlowInSocket);
+
     setsockopt(myGlobals.netFlowInSocket, SOL_SOCKET, SO_REUSEADDR,(char
*)&sockopt, sizeof(sockopt));

     sockIn.sin_family            = AF_INET;

Sep 16 11:20:44 x222168 ntop[10824]:   Starting 'NetFlow'
Sep 16 11:20:44 x222168 ntop[10824]:   Processing Netflow white/black list
parameter '0'
Sep 16 11:20:44 x222168 ntop[10824]:   NETFLOW: White list initialized to ''
Sep 16 11:20:44 x222168 ntop[10824]:   NETFLOW: Black list initialized to ''
Sep 16 11:20:44 x222168 ntop[10824]:   setNetFlowInSocket: called,
netFlowInSocket = -1
Sep 16 11:20:44 x222168 ntop[23224]:   NETFLOW: Unable to create a socket -
returned 0, error is 'Success'(0)

So, my guess is the NetFlow plugin (and probably others) also suffer the
FILEDESCRIPTORBUG when creating a socket. Strangely it works when the plugin
is stopped/started. Probably some more handles spent then...

-- Robbert

-----Oorspronkelijk bericht-----
Van: Kouprie, Robbert [mailto:[EMAIL PROTECTED]
Verzonden: maandag 15 september 2003 16:01
Aan: '[EMAIL PROTECTED]'
Onderwerp: [Ntop-dev] NetFlow plugin thread not started at ntop startup


Hi,

Still using today's CVS.

For some reason the NetFlow plugin just won't come up after starting ntop.
Of course I enabled it via Admin -> Plugins, did multiple clean shutdowns
(Admin -> Shutdown) to make sure the setting is written to the configuration
file. Tried with and without -i <local_interface> on the command line,
didn't work.

Also, the logs say NetFlow plugin is loaded and started, NetFlow-device is
created and active, default reporting is set to this device, but I just
don't get to see any data. Startup logs are attached below. Note, that
there's no "netFlow thread started". Also I have 7 ntop threads, whereas
normal I would have 8.

When I disable the NetFlow plugin, en enable it again, I see this:

Sep 15 15:53:04 x222168 ntop[14882]:   SECURITY: Loading items table
Sep 15 15:53:06 x222168 ntop[14882]:   IDLE_PURGE: FINISHED selection, 0
[out of 46] hosts selected
Sep 15 15:53:06 x222168 ntop[14882]:   IDLE_PURGE: Device 0: no hosts
deleted
Sep 15 15:53:06 x222168 ntop[14882]:   IDLE_PURGE: FINISHED selection, 0
[out of 2] hosts selected
Sep 15 15:53:06 x222168 ntop[14882]:   IDLE_PURGE: Device 1: no hosts
deleted
Sep 15 15:53:10 x222168 ntop[14882]:   NETFLOW: Thanks for using ntop
NetFlow
Sep 15 15:53:10 x222168 ntop[14882]:   NETFLOW: Done
Sep 15 15:53:10 x222168 ntop[14882]:   Processing Netflow white/black list
parameter '0'
Sep 15 15:53:10 x222168 ntop[14882]:   NETFLOW: White list initialized to ''
Sep 15 15:53:10 x222168 ntop[14882]:   NETFLOW: Black list initialized to ''
Sep 15 15:53:10 x222168 ntop[14882]:   NETFLOW: Collector listening on port
2055
Sep 15 15:53:10 x222168 ntop[14882]:   **ERROR** NetFlow-device is already
active - request ignored
Sep 15 15:53:10 x222168 ntop[14882]:   THREADMGMT: netFlow
thread(1158913328) started

And it works perfectly. Notice the "netFlow thread started" here. Also I
have 8 ntop threads again.

Regards,
-- Robbert

Sep 15 15:45:58 x222168 ntop[14820]:   ntop v.2.2.94 MT (SSL)
[i686-pc-linux-gnu (redhat Linux 9)] (09/15/03 02:47:01 PM build)
Sep 15 15:45:58 x222168 ntop[14820]:   Copyright 1998-2003 by Luca Deri
<[EMAIL PROTECTED]>
Sep 15 15:45:58 x222168 ntop[14820]:   Get the freshest ntop from
http://www.ntop.org/
Sep 15 15:45:58 x222168 ntop[14820]:   Initializing ntop
Sep 15 15:45:58 x222168 ntop[14820]:   Initializing IP services
Sep 15 15:45:58 x222168 ntop[14820]:   PROTO_INIT: Processing protocol file:
'/usr/local/etc/ntop/protocol.list', size: 512
Sep 15 15:45:58 x222168 ntop[14820]:   Initializing network devices
Sep 15 15:45:58 x222168 ntop[14820]:   Adding network device eth0
Sep 15 15:45:58 x222168 kernel: device eth0 entered promiscuous mode
Sep 15 15:45:58 x222168 ntop[14820]:   **WARNING** Truncated network size
(device eth0) to 1024 hosts (real netmask 255.255.252.0)
Sep 15 15:45:58 x222168 ntop[14820]:   MEMORY: ipTrafficMatrix base (no
TrafficEntry) for interface 'eth0' is  4.05MB
Sep 15 15:45:58 x222168 ntop[14820]:   Resetting traffic statistics for
device eth0
Sep 15 15:45:58 x222168 ntop[14820]:   Initializing gdbm databases
Sep 15 15:45:58 x222168 ntop[14820]:   Now running as requested user 'ntop'
(502:502)
Sep 15 15:45:58 x222168 ntop[14820]:   Opening database
'/var/lib/ntop/prefsCache.db'
Sep 15 15:45:58 x222168 ntop[14820]:   Opening database
'/var/lib/ntop/ntop_pw.db'
Sep 15 15:45:58 x222168 ntop[14820]:   Creating database
'/var/lib/ntop/addressQueue.db'
Sep 15 15:45:58 x222168 ntop[14820]:   Opening database
'/var/lib/ntop/dnsCache.db'
Sep 15 15:45:58 x222168 ntop[14820]:   Opening database
'/var/lib/ntop/macPrefix.db'
Sep 15 15:45:58 x222168 ntop[14820]:   VENDOR: Loading MAC address table.
Sep 15 15:45:58 x222168 ntop[14820]:   VENDOR: Checking
'./specialMAC.txt.gz'
Sep 15 15:45:58 x222168 ntop[14820]:   VENDOR: File './specialMAC.txt.gz'
does not need to be reloaded
Sep 15 15:45:58 x222168 ntop[14820]:   VENDOR: Checking './oui.txt.gz'
Sep 15 15:45:58 x222168 ntop[14820]:   VENDOR: File './oui.txt.gz' does not
need to be reloaded
Sep 15 15:45:58 x222168 ntop[14821]:   INIT: Bye bye: I'm becoming a
daemon...
Sep 15 15:45:58 x222168 ntop[14821]:   Now running as a daemon
Sep 15 15:45:58 x222168 ntop[14820]:   INIT: Parent process is exiting (this
is normal)
Sep 15 15:45:58 x222168 ntop[14821]:   Processing -m | --local-subnets
parameter '130.161.0.0/16,145.94.0.0/16,194.171.50.0/24'
Sep 15 15:45:58 x222168 ntop[14821]:   OSFP: Looking for OS fingerprint
file, etter.passive.os.fp.gz
Sep 15 15:45:58 x222168 ntop[14821]:   OSFP: Checking
'./etter.passive.os.fp.gz'
Sep 15 15:45:58 x222168 ntop: ntop startup succeeded
Sep 15 15:45:58 x222168 ntop[14821]:   OSFP: Checking
'/usr/local/etc/ntop/etter.passive.os.fp.gz'
Sep 15 15:45:58 x222168 ntop[14821]:   OSFP: ...found!
Sep 15 15:45:58 x222168 ntop[14821]:   AS: Looking for ASN file,
AS-list.txt.gz
Sep 15 15:45:58 x222168 ntop[14821]:   AS: Checking './AS-list.txt.gz'
Sep 15 15:45:58 x222168 ntop[14821]:   AS: Checking
'/usr/local/etc/ntop/AS-list.txt.gz'
Sep 15 15:45:58 x222168 ntop[14821]:   AS: Checking '/etc/AS-list.txt.gz'
Sep 15 15:45:58 x222168 ntop[14821]:   **WARNING** AS: Unable to open file
'AS-list.txt.gz'.
Sep 15 15:45:58 x222168 ntop[14821]:   AS: ntop continues ok, but without
ASN information.
Sep 15 15:45:58 x222168 ntop[14821]:   I18N: This instance of ntop does not
support multiple languages
Sep 15 15:45:58 x222168 ntop[14821]:   IP2CC: Looking for IP address <->
Country code mapping file
Sep 15 15:45:58 x222168 ntop[14821]:   IP2CC: ...looking for file
./p2c.opt.table.gz
Sep 15 15:45:58 x222168 ntop[14821]:   IP2CC: ...looking for file
./p2c.opt.table
Sep 15 15:45:58 x222168 ntop[14821]:   IP2CC: ...does not exist
Sep 15 15:45:58 x222168 ntop[14821]:   IP2CC: ...looking for file
/usr/local/etc/ntop/p2c.opt.table.gz
Sep 15 15:45:58 x222168 ntop[14821]:   IP2CC: reading file
'/usr/local/etc/ntop/p2c.opt.table.gz'
Sep 15 15:45:59 x222168 ntop[14821]:   IP2CC: ......49056 records read
Sep 15 15:45:59 x222168 ntop[14821]:   IP2CC: ...looking for file
/etc/p2c.opt.table.gz
Sep 15 15:45:59 x222168 ntop[14821]:   IP2CC: ...looking for file
/etc/p2c.opt.table
Sep 15 15:45:59 x222168 ntop[14821]:   IP2CC: ...does not exist
Sep 15 15:45:59 x222168 ntop[14821]:   IP2CC: 49056 records read
Sep 15 15:45:59 x222168 ntop[14821]:   Initializing external applications
Sep 15 15:45:59 x222168 ntop[14821]:   Initializing semaphores, mutexes and
threads
Sep 15 15:45:59 x222168 ntop[14821]:   NOTE: atfork() handler registered for
mutexes, rc 0
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Packet processor thread
running...
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Started thread
(1092623664) for network packet analyser
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Idle host scan thread
running...
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Started thread
(1101016368) for idle hosts detection
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Address resolution thread
running...
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Started thread
(1116949808) for DNS address resolution
Sep 15 15:45:59 x222168 ntop[14821]:   Starting Plugins
Sep 15 15:45:59 x222168 ntop[14821]:   Calling plugin start functions (if
any)
Sep 15 15:45:59 x222168 ntop[14821]:   Plugins started... continuing with
initialization
Sep 15 15:45:59 x222168 ntop[14821]:   MEMORY: Base memory load is 6.65MB
(2220816+4743168)
Sep 15 15:45:59 x222168 ntop[14821]:   MEMORY: Base interface structure (no
hashes loaded) is 0.27MB each
Sep 15 15:45:59 x222168 ntop[14821]:   MEMORY:     or 0.27MB for 1
interfaces
Sep 15 15:45:59 x222168 ntop[14821]:   MEMORY: ipTraffixMatrix structure (no
TrafficEntry loaded) is 4.00MB
Sep 15 15:45:59 x222168 ntop[14821]:   Sniffying...
Sep 15 15:45:59 x222168 ntop[14821]:   INIT: Created pid file
(/var/lib/ntop/ntop.pid)
Sep 15 15:45:59 x222168 ntop[14821]:   Listening on [eth0]
Sep 15 15:45:59 x222168 ntop[14821]:   Now running as requested user 'ntop'
(502:502)
Sep 15 15:45:59 x222168 ntop[14821]:   Loading Plugins
Sep 15 15:45:59 x222168 ntop[14821]:   Searching for plugins in
/usr/local/lib/ntop/plugins
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/icmpPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   ICMP: Welcome to icmpWatchPlugin. (C)
1999 by Luca Deri
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/lastSeenPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   LASTSEEN: Welcome to
LastSeenWatchPlugin. (C) 1999 by Andrea Marangoni
Sep 15 15:45:59 x222168 ntop[14821]:   Compiling filter 'ip' on interface
eth0
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/netflowPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   NETFLOW: Welcome to NetFlow.(C) 2002
by Luca Deri
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/nfsPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   NFS: Welcome to nfsWatchPlugin. (C)
1999 by Luca Deri
Sep 15 15:45:59 x222168 ntop[14821]:   Compiling filter 'port 2049' on
interface eth0
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/pdaPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   PDA: Welcome to PDAPlugin. (C)
2001-2002 by L.Deri and W.Brock
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/sflowPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   SFLOW: Welcome to sFlowPlugin. (C)
2002 by Luca Deri
Sep 15 15:45:59 x222168 ntop[14821]:   Compiling filter 'ip' on interface
eth0
Sep 15 15:45:59 x222168 ntop[14821]:   Loading plugin
'/usr/local/lib/ntop/plugins/rrdPlugin.so'
Sep 15 15:45:59 x222168 ntop[14821]:   RRD: Welcome to rrdPlugin. (C) 2002
by Luca Deri.
Sep 15 15:45:59 x222168 ntop[14821]:   Starting Plugins
Sep 15 15:45:59 x222168 ntop[14821]:   Calling plugin start functions (if
any)
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'rrdPlugin'
Sep 15 15:45:59 x222168 ntop[14821]:   RRD: Welcome to the RRD plugin
Sep 15 15:45:59 x222168 ntop[14821]:   RRD: Mask for new directories is 0700
Sep 15 15:45:59 x222168 ntop[14821]:   RRD: Mask for new files is 0066
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: rrd thread (1125342512)
started
Sep 15 15:45:59 x222168 ntop[14821]:   RRD: Started thread (1125342512) for
data collection.
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'sFlowPlugin'
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'PDAPlugin'
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'nfsWatchPlugin'
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'NetFlow'
Sep 15 15:45:59 x222168 ntop[14821]:   Processing Netflow white/black list
parameter '0'
Sep 15 15:45:59 x222168 ntop[14821]:   NETFLOW: White list initialized to ''
Sep 15 15:45:59 x222168 ntop[14821]:   NETFLOW: Black list initialized to ''
Sep 15 15:45:59 x222168 ntop[14821]:   NETFLOW: Collector listening on port
2055
Sep 15 15:45:59 x222168 ntop[14821]:   Creating dummy interface,
'NetFlow-device'
Sep 15 15:45:59 x222168 ntop[14821]:   NETFLOW: Export disabled at user
request
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'LastSeenWatchPlugin'
Sep 15 15:45:59 x222168 ntop[14821]:   Starting 'icmpWatchPlugin'
Sep 15 15:45:59 x222168 ntop[14821]:   Plugins started... continuing with
initialization
Sep 15 15:45:59 x222168 ntop[14821]:   SSL is present but https is disabled:
use -W <https port> for enabling it
Sep 15 15:45:59 x222168 ntop[14821]:   Device  0. eth0
(active)
Sep 15 15:45:59 x222168 ntop[14821]:   Device  1. NetFlow-device
(dummy) (active)
Sep 15 15:45:59 x222168 ntop[14821]:   Note: Reporting device initally set
to 1 [NetFlow-device]
Sep 15 15:45:59 x222168 ntop[14821]:   WEB: Initializing web server
Sep 15 15:45:59 x222168 ntop[14821]:   WEB: Initializing tcp/ip socket
connections for web server
Sep 15 15:45:59 x222168 ntop[14821]:   Initializing socket, port 3000,
address (any)
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Work-around
activated
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Creating 0,
'/tmp/ntop-000014821-0'
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Created file 0 -
'/tmp/ntop-000014821-0'(11)
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Creating 1,
'/tmp/ntop-000014821-1'
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Created file 1 -
'/tmp/ntop-000014821-1'(12)
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Creating 2,
'/tmp/ntop-000014821-2'
Sep 15 15:45:59 x222168 ntop[14821]:   FILEDESCRIPTORBUG: Created file 2 -
'/tmp/ntop-000014821-2'(13)
Sep 15 15:45:59 x222168 ntop[14821]:   WEB: Created a new socket (14)
Sep 15 15:45:59 x222168 ntop[14821]:   Initialized socket, port 3000,
address (any)
Sep 15 15:45:59 x222168 ntop[14821]:   WEB: Waiting for HTTP connections on
port 3000
Sep 15 15:45:59 x222168 ntop[14821]:   WEB: Starting web server
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: web connections thread
(14821) started...
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Started thread
(1142127920) for web server
Sep 15 15:45:59 x222168 ntop[14821]:   WEB: Server started... continuing
with initialization
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: pcap dispatch thread
running...
Sep 15 15:45:59 x222168 ntop[14821]:   THREADMGMT: Started thread
(1150520624) for network packet sniffing on eth0
Sep 15 15:46:59 x222168 ntop[14821]:   IDLE_PURGE: FINISHED selection, 0
[out of 20] hosts selected
Sep 15 15:46:59 x222168 ntop[14821]:   IDLE_PURGE: Device 0: no hosts
deleted
Sep 15 15:46:59 x222168 ntop[14821]:   IDLE_PURGE: FINISHED selection, 0
[out of 2] hosts selected
Sep 15 15:46:59 x222168 ntop[14821]:   IDLE_PURGE: Device 1: no hosts
deleted




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