RRDINFO(1) rrdtool RRDINFO(1) NNAAMMEE rrdinfo - extract header information from an RRD SSYYNNOOPPSSIISS rrrrddttooooll iinnffoo _f_i_l_e_n_a_m_e [----ddaaeemmoonn _a_d_d_r_e_s_s] DDEESSCCRRIIPPTTIIOONN The iinnffoo function prints the header information from an RRD in a parsing friendly format. Check rrdcreate if you are uncertain about the meaning of the individual keys. _f_i_l_e_n_a_m_e The name of the RRRRDD you want to examine. ----ddaaeemmoonn _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. For a list of accepted formats, see the --ll option in the rrdcached manual. rrdtool info --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd EEXXAAMMPPLLEE This is the output generated by running iinnffoo on a simple RRD which contains two data sources and one RRA. Note that the number after the _l_a_s_t___u_p_d_a_t_e keyword is in seconds since 1970. The string NNaaNN stands for _*_U_N_K_N_O_W_N_* data. In the example it means that this RRD has neither minimum nor maximum values defined for either of its data sources. filename = "random.rrd" rrd_version = "0001" step = 300 last_update = 955892996 header_size = 2872 ds[a].type = "GAUGE" ds[a].minimal_heartbeat = 600 ds[a].min = NaN ds[a].max = NaN ds[a].last_ds = "UNKN" ds[a].value = 2.1824421548e+04 ds[a].unknown_sec = 0 ds[b].type = "GAUGE" ds[b].minimal_heartbeat = 600 ds[b].min = NaN ds[b].max = NaN ds[b].last_ds = "UNKN" ds[b].value = 3.9620838224e+03 ds[b].unknown_sec = 0 rra[0].cf = "AVERAGE" rra[0].pdp_per_row = 1 rra[0].cdp_prep[0].value = nan rra[0].cdp_prep[0].unknown_datapoints = 0 rra[0].cdp_prep[1].value = nan rra[0].cdp_prep[1].unknown_datapoints = 0 EENNVVIIRROONNMMEENNTT VVAARRIIAABBLLEESS The following environment variables may be used to change the behavior of "rrdtool info": 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 1.4.8 2013-05-23 RRDINFO(1)