Gentoo and 64-bit.
Compiled from sources that I just downloaded.
I just downloaded 0.14.3 to test, and so far 0.14.3 appears to work
correctly (so far, running for about 10m).
With a single odd exception, 0.14.3 refused to start because:
mmap(NULL, 18446744072050714384, PROT_READ|PROT_WRITE,
MAP_SHARED|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory)
It's trying to mmap() 18 exabytes of memory? I am not the NSA, I don't
have that much RAM :)
Setting:
plugin_buffer_size: 102400
plugin_pipe_size[all]: 102400
Seems to have resolved that, its humming along for about 15m now.
-Adam
On 11/20/13, 11:02 PM, Brent Van Dussen wrote:
Hi Adam,
Just for a point on the curve we have Juniper MX IPFIX -> nfacctd 1.5.0rc1 tee
replicating out to a few different destinations (one local, two remote) and see
exactly double the output traffic as input traffic as expected. This is on a Linux
Debian 7 box.
What OS/Arch are you running?
-Brent
-----Original Message-----
From: pmacct-discussion [mailto:pmacct-discussion-boun...@pmacct.net] On Behalf
Of Adam Jacob Muller
Sent: Wednesday, November 20, 2013 7:36 PM
To: pmacct-discussion@pmacct.net
Subject: Re: [pmacct-discussion] nfacctd, ipfix and tee transparent mode
Hi,
That was actually one of my first thoughts. But my topology is extremely simple here
and I only see the excess traffic on the replicator server from server->network,
not network->server, which I would expect in the case of a loop.
The single collector in this case is another nfacctd process that has no tee
configured, it shouldn't even be possible to loop back (I think the version of
nfacctd there is to old to even have 'tee' actually).
Also tcpdump definitely sees a MUCH higher rate of outbound packets.
-Adam
On 11/20/13, 10:23 PM, Nathan Kennedy wrote:
Hi Adam,
I'm guessing you've already thought of this, but is it at all possible that one
of the destinations you're tee-ing the packets to (e.f.g.h) is then feeding it
back (to a.b.c.d)?
Thanks,
Nathan.
-----Original Message-----
From: pmacct-discussion [mailto:pmacct-discussion-boun...@pmacct.net]
On Behalf Of Adam Jacob Muller
Sent: Thursday, 21 November 2013 4:05 p.m.
To: pmacct-discussion@pmacct.net
Subject: [pmacct-discussion] nfacctd, ipfix and tee transparent mode
Hi,
I have an interesting issue that I think perhaps results from a perhaps unique
configuration.
I have a very simple nfacctd setup on one box, its goal would be to receive
ipfix data from two sources (Juniper MX) and replicate it out to a few places.
The configuration is -very- simple:
nfacctd_ip:a.b.c.d
nfacctd_port: 2101
plugins: tee[all]
tee_receiver[all]: e.f.g.h:2100
tee_transparent: true
When I turn up the data feed to this source, everything works fine for
a few minutes and then nfacctd will suddenly get into what looks like
a loop internally and start rebroadcasting out the same packets [I
think
-- I did not specifically confirm this] (not a single packet, but perhaps the
same group) as quickly as possible. Like, line rate pegging the servers gigabit
uplink.
Some (hopefully) useful data points:
I have another nfacctd instance teeing with an almost identical configuration,
except that the source is NetFlow v5 (Cisco).
tee_transparent has no effect, I prefer it but it still breaks with it off.
Disabling the netflow source does not stop the packets. nfacctd continues to
rebroadcast the same (again, presumably the same) set of packets over and over
again until I kill the process (or ctrl-c, that still works fine).
This seems very unusual, because I assume this would be obvious in testing /
development if things were this badly broken but my configuration is also
exceedingly simple and I don't particularly see where I did (or even could) go
wrong.
Thanks in advance for any advice you can offer,
-Adam
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