1 RRDUPDATE(1) rrdtool RRDUPDATE(1)
6 rrdupdate - Store a new set of values into the RRD
9 r\brr\brd\bdt\bto\boo\bol\bl {u\bup\bpd\bda\bat\bte\be | u\bup\bpd\bda\bat\bte\bev\bv} _\bf_\bi_\bl_\be_\bn_\ba_\bm_\be [-\b--\b-t\bte\bem\bmp\bpl\bla\bat\bte\be|-\b-t\bt _\bd_\bs_\b-_\bn_\ba_\bm_\be[:\b:_\bd_\bs_\b-
10 _\bn_\ba_\bm_\be]...] [-\b--\b-d\bda\bae\bem\bmo\bon\bn _\ba_\bd_\bd_\br_\be_\bs_\bs] [-\b--\b-] N\bN|_\bt_\bi_\bm_\be_\bs_\bt_\ba_\bm_\bp:\b:_\bv_\ba_\bl_\bu_\be[:\b:_\bv_\ba_\bl_\bu_\be...] _\ba_\bt_\b-
11 _\bt_\bi_\bm_\be_\bs_\bt_\ba_\bm_\bp@\b@_\bv_\ba_\bl_\bu_\be[:\b:_\bv_\ba_\bl_\bu_\be...] [_\bt_\bi_\bm_\be_\bs_\bt_\ba_\bm_\bp:\b:_\bv_\ba_\bl_\bu_\be[:\b:_\bv_\ba_\bl_\bu_\be...] ...]
14 The u\bup\bpd\bda\bat\bte\be function feeds new data values into an R\bRR\bRD\bD. The data is time
16 the data is written.
18 u\bup\bpd\bda\bat\bte\bev\bv This alternate version of u\bup\bpd\bda\bat\bte\be takes the same arguments and
21 and all consolidated data points (CDPs) written to disk as a
22 result of the invocation of update. The values are indexed by
23 timestamp (time_t), RRA (consolidation function and PDPs per
24 CDP), and data source (name). Note that depending on the
25 arguments of the current and previous call to update, the list
26 may have no entries or a large number of entries.
28 Since u\bup\bpd\bda\bat\bte\bev\bv requires direct disk access, the -\b--\b-d\bda\bae\bem\bmo\bon\bn option
29 cannot be used with this command.
34 -\b--\b-t\bte\bem\bmp\bpl\bla\bat\bte\be|-\b-t\bt _\bd_\bs_\b-_\bn_\ba_\bm_\be[:\b:_\bd_\bs_\b-_\bn_\ba_\bm_\be]...
36 order the data sources are defined in the RRD, excluding any
38 COMPUTE, the third input value will be mapped to the fourth
40 resistant, as you might be sending the wrong data into an RRD.
42 The template switch allows you to specify which data sources
43 you are going to update and in which order. If the data sources
44 specified in the template are not available in the RRD file,
45 the update process will abort with an error message.
47 While it appears possible with the template switch to update
50 value.
53 function. If this is done accidentally (and this can only be
60 established. If the connection is successfully established the
61 values will be sent to the daemon instead of accessing the
62 files directly.
65 rrdcached manual.
68 The data used for updating the RRD was acquired at a certain
69 time. This time can either be defined in seconds since
70 1970-01-01 or by using the letter 'N', in which case the update
71 time is set to be the current time. Negative time values are
72 subtracted from the current time. An AT_STYLE TIME
74 by delimiting the end of the time specification with the '@'
75 character instead of a ':'. Getting the timing right to the
76 second is especially important when you are working with data-
77 sources of type C\bCO\bOU\bUN\bNT\bTE\bER\bR, D\bDE\bER\bRI\bIV\bVE\bE or A\bAB\bBS\bSO\bOL\bLU\bUT\bTE\bE.
79 When using negative time values, options and data have to be
81 parsed as an option. See below for an example.
83 When using negative time values, options and data have to be
85 parsed as an option. See below for an example.
87 The remaining elements of the argument are DS updates. The
88 order of this list is the same as the order the data sources
89 were defined in the RRA. If there is no data for a certain
90 data-source, the letter U\bU (e.g., N:0.1:U:1) can be specified.
92 The format of the value acquired from the data source is
93 dependent on the data source type chosen. Normally it will be
94 numeric, but the data acquisition modules may impose their very
95 own parsing of this parameter as long as the colon (:\b:) remains
96 the data source value separator.
99 The following environment variables may be used to change the behavior
100 of "rrdtool update":
103 If this environment variable is set it will have the same effect as
104 specifying the "--daemon" option on the command line. If both are
105 present, the command line argument takes precedence.
108 · "rrdtool update demo1.rrd N:3.44:3.15:U:23"
111 value. Use the current time as the update time.
113 · "rrdtool update demo2.rrd 887457267:U 887457521:22 887457903:2.7"
115 Update the database file demo2.rrd which expects data from a single
117 two regular readings. The update interval seems to be around 300
118 seconds.
120 · "rrdtool update demo3.rrd -- -5:21 N:42"
122 Update the database file demo3.rrd two times, using five seconds in
123 the past and the current time as the update times.
125 · "rrdtool update --cache /var/lib/rrd/demo3.rrd N:42"
127 Update the file "/var/lib/rrd/demo3.rrd" with a single data source,
128 using the current time. If the caching daemon cannot be reached, do
131 · "rrdtool update --daemon unix:/tmp/rrdd.sock demo4.rrd N:23"
133 Use the UNIX domain socket "/tmp/rrdd.sock" to contact the caching
134 daemon. If the caching daemon is not available, update the file
136 the following disturbing effect may occur: If the daemon is
137 available, the file relative to the working directory o\bof\bf t\bth\bhe\be d\bda\bae\bem\bmo\bon\bn
138 is used. If the daemon is not available, the file relative to the
140 m\bma\bay\by u\bup\bpd\bda\bat\bte\be t\btw\bwo\bo d\bdi\bif\bff\bfe\ber\bre\ben\bnt\bt f\bfi\bil\ble\bes\bs d\bde\bep\bpe\ben\bnd\bdi\bin\bng\bg o\bon\bn w\bwh\bhe\bet\bth\bhe\ber\br t\bth\bhe\be d\bda\bae\bem\bmo\bon\bn
141 c\bco\bou\bul\bld\bd b\bbe\be r\bre\bea\bac\bch\bhe\bed\bd o\bor\br n\bno\bot\bt.\b. Don't do relative paths, kids!
144 Tobias Oetiker <tobi@oetiker.ch>, Florian Forster
145 <octo at verplant.org>
149 1.4.2 2009-06-02 RRDUPDATE(1)