[collectd] Network Plugin details about network downtime.

Florian Forster octo at collectd.org
Thu Dec 1 11:03:14 CET 2011

Hi Jonas,

On Wed, Nov 30, 2011 at 03:22:29PM -0200, Jonas Zanon wrote:
> What I didn't see anywhere in documentation or forums is that when the
> network communication between collectd client and server is lost, the
> data collected in downtime in the client side will be transmitted to
> the server after the connection is restored? By my tests, I don't
> think so.

the network plugin uses UDP, which is an "unreliable" protocol. That
means that if the server is not available / doesn't receive the data for
whatever reason, the client won't even notice. I.e. the data is simply

> If not, how can I overcome this?
> Have you guys already in this situation?

Right now there is no plugin that buffers and retransmits in this
scenario. You can get more reliable transmissions using AMQP, for
example, but if the client–broker connection is lost, collectd will drop
data in that setup, too.

HTH; Best regards,
Florian octo Forster
Hacker in training
GnuPG: 0x0C705A15
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