[collectd] Fwd: client is never sending data to server

[Ricardo J. Barberis]

El Lunes 30/07/2018 a las 23:00, Lonni J Friedman escribió:
> On Mon, Jul 30, 2018 at 1:24 PM Ricardo J. Barberis
> <ricardo at palmtx.com.ar> wrote:
> > About strace, make sure to use 'strace -f' (follow children) in case the
> > collecting an sending don't happen on the parent process.
>
> Good point.  I do see more output once I follow the children, but nothing
> good:
>
> [pid 12483] <... futex resumed> )       = -1 ETIMEDOUT (Connection timed
> out) [pid 12483] futex(0x48416c, FUTEX_WAKE_PRIVATE, 1) = 0
[...snip...]
> I see a lot of 'Resource temporarily unavailable' and 'Connection timed
> out'.
>
> Any other suggestions?

First I'd try without Encrypt/Sign to rule out problems with that..

One other thing that just ocurred to me is to use tcpdump, e.g. on the client 
something like this:

# tcpdump -i any -nn -vv dst host <server IP> and port 25826 and udp

And on the server:

# tcpdump -i any -nn -vv src host <client IP> and port 25826 and udp


Hint: I you pass '-w file' to tcpdump, you can save the dump to a file and 
load it on wireshark for a better analysis.


Cheers,
-- 
Ricardo J. Barberis
Usuario Linux Nº 250625: http://counter.li.org/
Usuario LFS Nº 5121: http://www.linuxfromscratch.org/
Senior SysAdmin / IT Architect - www.DonWeb.com