


RRDTUNE(1)                   RRDtool                   RRDTUNE(1)


NNAAMMEE
       rrdtune - Modify some basic properties of a Round Robin
       Database

SSYYNNOOPPSSIISS
       rrrrddttooooll ttuunnee _f_i_l_e_n_a_m_e [----hheeaarrttbbeeaatt|--hh _d_s_-_n_a_m_e:_h_e_a_r_t_b_e_a_t]
       [----mmiinniimmuumm|--ii _d_s_-_n_a_m_e:_m_i_n] [----mmaaxxiimmuumm|--aa _d_s_-_n_a_m_e:_m_a_x]
       [----ddaattaa--ssoouurrccee--ttyyppee|--dd _d_s_-_n_a_m_e:_D_S_T]
       [----ddaattaa--ssoouurrccee--rreennaammee|--rr _o_l_d_-_n_a_m_e:_n_e_w_-_n_a_m_e]

DDEESSCCRRIIPPTTIIOONN
       The tune option allows you to alter some of the basic con-
       figuration values stored in the header area of a Round
       Robin Database (RRRRDD).  All these tunable parameters
       together decide when data fed into an RRRRDD is to be
       regarded as invalid. Invalid data is entered into the
       database as *UNKNOWN*.

       The main application of the ttuunnee function is to relax the
       validation rules on an RRRRDD. This allows to fill a new RRRRDD
       with data available in larger intervals than what you
       would normally want to permit.

       _f_i_l_e_n_a_m_e
               The name of the RRRRDD you want to tune.

       ----hheeaarrttbbeeaatt|--hh _d_s_-_n_a_m_e:_h_e_a_r_t_b_e_a_t
               modify the _h_e_a_r_t_b_e_a_t of a data source. By setting
               this to a high value the RRD will accept things
               like one value per day ...

       ----mmiinniimmuumm|--ii _d_s_-_n_a_m_e:_m_i_n
               alter the minimum value acceptable as input from
               the data source.  Setting _m_i_n to 'U' will disable
               this limit.

       ----mmaaxxiimmuumm|--aa _d_s_-_n_a_m_e:_m_a_x
               alter the maximum value acceptable as input from
               the data source.  Setting _m_a_x to 'U' will disable
               this limit.

       ----ddaattaa--ssoouurrccee--ttyyppee|--dd _d_s_-_n_a_m_e:_D_S_T
               alter the type DDSSTT of a data source.

       [----ddaattaa--ssoouurrccee--rreennaammee|--rr _o_l_d_-_n_a_m_e:_n_e_w_-_n_a_m_e]
               rename a data source

EEXXAAMMPPLLEE
       "rrdtool tune data.rrd -h in:100000 -h out:100000 -h
       through:100000"

       Set the minimum required heartbeat for data sources 'in',
       'out' and 'through' to 10000 seconds which is a little
       over one day in data.rrd.  This would allow to feed old



1.0.49                      2004-01-17                          1





RRDTUNE(1)                   RRDtool                   RRDTUNE(1)


       data from MRTG-2.0 right into RRDTool without generating
       *UNKNOWN* entries.

AAUUTTHHOORR
       Tobias Oetiker <oetiker@ee.ethz.ch>




















































1.0.49                      2004-01-17                          2


