1RRDINFO(1)                          rrdtool                         RRDINFO(1)
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NAME

6       rrdinfo - extract header information from an RRD
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SYNOPSIS

9       rrdtool info filename [--daemon address]
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DESCRIPTION

12       The info function prints the header information from an RRD in a
13       parsing friendly format.
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15       Check rrdcreate if you are uncertain about the meaning of the
16       individual keys.
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18       filename
19               The name of the RRD you want to examine.
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21       --daemon address
22               Address of the rrdcached daemon. If specified, a "flush"
23               command is sent to the server before reading the RRD files.
24               This allows rrdtool to return fresh data even if the daemon is
25               configured to cache values for a long time.  For a list of
26               accepted formats, see the -l option in the rrdcached manual.
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28                rrdtool info --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
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EXAMPLE

31       This is the output generated by running info on a simple RRD which
32       contains two data sources and one RRA. Note that the number after the
33       last_update keyword is in seconds since 1970. The string NaN stands for
34       *UNKNOWN* data. In the example it means that this RRD has neither
35       minimum nor maximum values defined for either of its data sources.
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37        filename = "random.rrd"
38        rrd_version = "0001"
39        step = 300
40        last_update = 955892996
41        header_size = 2872
42        ds[a].type = "GAUGE"
43        ds[a].minimal_heartbeat = 600
44        ds[a].min = NaN
45        ds[a].max = NaN
46        ds[a].last_ds = "UNKN"
47        ds[a].value = 2.1824421548e+04
48        ds[a].unknown_sec = 0
49        ds[b].type = "GAUGE"
50        ds[b].minimal_heartbeat = 600
51        ds[b].min = NaN
52        ds[b].max = NaN
53        ds[b].last_ds = "UNKN"
54        ds[b].value = 3.9620838224e+03
55        ds[b].unknown_sec = 0
56        rra[0].cf = "AVERAGE"
57        rra[0].pdp_per_row = 1
58        rra[0].cdp_prep[0].value = nan
59        rra[0].cdp_prep[0].unknown_datapoints = 0
60        rra[0].cdp_prep[1].value = nan
61        rra[0].cdp_prep[1].unknown_datapoints = 0
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ENVIRONMENT VARIABLES

64       The following environment variables may be used to change the behavior
65       of "rrdtool info":
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67       RRDCACHED_ADDRESS
68           If this environment variable is set it will have the same effect as
69           specifying the "--daemon" option on the command line. If both are
70           present, the command line argument takes precedence.
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AUTHOR

73       Tobias Oetiker <tobi@oetiker.ch>
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771.4.4                             2009-04-20                        RRDINFO(1)
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