RRDDUMP(1)                          rrdtool                         RRDDUMP(1)



NNAAMMEE
       rrddump - dump the contents of an RRD to XML format

SSYYNNOOPPSSIISS
       rrrrddttooooll dduummpp _f_i_l_e_n_a_m_e_._r_r_d [_f_i_l_e_n_a_m_e_._x_m_l] [----hheeaaddeerr|--hh {none,xsd,dtd}]
       [----nnoo--hheeaaddeerr|--nn] [----ddaaeemmoonn|--dd _a_d_d_r_e_s_s] [> _f_i_l_e_n_a_m_e_._x_m_l]

DDEESSCCRRIIPPTTIIOONN
       The dduummpp function writes the contents of an RRRRDD in human readable (?)
       XML format to a file or to stdout. This format can be read by
       rrdrestore. Together they allow you to transfer your files from one
       computer architecture to another as well to manipulate the contents of
       an RRRRDD file in a somewhat more convenient manner.

       _f_i_l_e_n_a_m_e_._r_r_d
               The name of the RRRRDD you want to dump.

       _f_i_l_e_n_a_m_e_._x_m_l
               The (optional) filename that you want to write the XML output
               to.  If not specified, the XML will be printed to stdout.

       ----hheeaaddeerr|--hh {none,xsd,dtd}
               By default RRDtool will add a dtd header to the xml file. Here
               you can customize this to and xsd header or no header at all.

       ----nnoo--hheeaaddeerr|--nn
               A shortcut for --header=none.

               If you want to restore the dump with RRDtool 1.2 you should use
               the --no-header option since 1.2 cannot deal with xml headers.

       ----ddaaeemmoonn|--dd _a_d_d_r_e_s_s
               Address of the rrdcached daemon. If specified, a "flush"
               command is sent to the server before reading the RRD files.
               This allows rrrrddttooooll to return fresh data even if the daemon is
               configured to cache values for a long time.  When specified the
               RRD filename signifies a server side file, but the output (XML)
               filename refers to the local side.  For a list of accepted
               formats, see the --ll option in the rrdcached manual.

                rrdtool dump --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd

EEXXAAMMPPLLEESS
       To transfer an RRD between architectures, follow these steps:

       1.  On the same system where the RRD was created, use rrrrddttooooll dduummpp to
           export the data to XML format.

       2.  Transfer the XML dump to the target system.

       3.  Run rrrrddttooooll rreessttoorree to create a new RRD from the XML dump. See
           rrrrddrreessttoorree for details.

EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS
       The following environment variables may be used to change the behavior
       of "rrdtool dump":

       RRRRDDCCAACCHHEEDD__AADDDDRREESSSS
           If this environment variable is set it will have the same effect as
           specifying the "--daemon" option on the command line. If both are
           present, the command line argument takes precedence.

AAUUTTHHOORR
       Tobias Oetiker <tobi@oetiker.ch>



1.9.0                             2024-07-29                        RRDDUMP(1)
