[rrd-users] Is it possible to Access an RRD Remotely (e.g. by connecting to that machine's RRDTool over a socket)

Bernard Li bernard at vanhpc.org
Thu Oct 28 01:47:48 CEST 2010

I forgot to mention, there is also a third possibility when Erik
checks in his changes for JSON output :-)




On Wed, Oct 27, 2010 at 4:43 PM, Steve Shipway <s.shipway at auckland.ac.nz> wrote:
> You can do this in several ways; Bernard has already mentioned RRD server,
> but (with RRDTool 1.4.x) you can also use rrdcached, the caching daemon, to
> provide remote access over the network to a subset of commands.  I've been
> playing with the quite a bit recently and it has a whole load of useful
> possibilities.
> With rrdcached you can  run update and fetch over the network, and graph can
> run locally but pull the date from a remote rrdcached.  If you get the
> current trunk (beta) version of rrdtool 1.4 then you can also run first,
> last, info, and create over the network as well.
> In your setup, if you put the rrdcached between cacti and rrdtool using a
> UNIX-domain socket (by setting the RRDCACHED_ADDRESS before starting Cacti)
> then it should continue to run as normal but will be a bit more efficient on
> writes; however you can also have rrdcached listen on a TCP socket
> simultaneously allowing your remote Windows box to query the database via
> this.  Having the local Cacti write via a unix socket rather than TCP is
> better as it is (1) faster and (2) can fall back to using direct mode for
> commands not yet supported by rrdcached.
> For security, you can set rrdcached command line options to prevent the
> remote Windows box from doing anything other than first/last/info/fetch, and
> use tcpwrappers or local firewall to restrict remote connections.
> Steve
> Steve Shipway
> University of Auckland ITS
> UNIX Systems Design Lead
> s.shipway at auckland.ac.nz
> Ph: +64 9 373 7599 ext 86487
> ________________________________
> From: rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch
> [rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] on behalf of
> Miguel Sevilla [msevilla79 at hotmail.com]
> Sent: Thursday, 28 October 2010 8:33 a.m.
> To: rrd-users at lists.oetiker.ch
> Subject: [rrd-users] Is it possible to Access an RRD Remotely (e.g. by
> connecting to that machine's RRDTool over a socket)
> Hi All, is it possible to connect access an RRD (e.g. Cacti RRD) from a
> different machine over the network? (e.g. connect to the RRDTool over TCP or
> something)
> More context:  We have Cacti (RRD backend) deployed on a linux machine and
> want to be able to query the Cacti RRD database from a windows machine.
> However, we don't know if this is possible without us writing custom server
> code to serve as the interface to the linux machine's RRDTool.
> Thank you all for your time.
> Miguel
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