the name of the RRD you want to fetch the data from. /usr/bin/rrdtool update /usr/share/cacti/rra/localhost_proc_7.rrd --template proc 1403374802:102, rrdtool fetch localhost_proc_7.rrd AVERAGE [YY]YY, or YYYYMMDD. rrdfetch will try to match your request, Some special times of day are understood as well, including midnight (00:00), noon (12:00) and British teatime (16:00). cacti.log: browser like Mozilla Firefox or Viewed 1k times 0. I have a lines like below, captured from rrdtool fetch command, Code : 1395295200 2.0629986254e+06 7.4634784967e+05 1395297000 2.0198121616e+06 6.8658888903e+05 1395298800 1.8787141122e+06 6.7482866452e+05 1395300600 1.7586118678e+06 6.7867977653e+05 1395302400 1.8222762151e+06 7.1301678859e+05 Start (end) can be used to specify a time relative to the start (end) time for those tools that use these categories (rrdfetch, rrdgraph) and epoch indicates the *IX epoch (*IX timestamp 0 = 1970-01-01 00:00:00 UTC). What else can be the reason for only getting nan values? RRDtool is a wonderful tool for collecting and graphing data.. RRDtool is the OpenSource industry standard, high performance data logging and graphing system for time series data. ds[proc].minimal_heartbeat = 600 Therefore, the highest resolution RRA, i.e. Alternatively, you can use day-of-week-name (e.g. bug#0002060: NAN values in hdd utilization graphs (Poller Output Table not Empty) bug: Fix SQL injection issues in login page bug: RRDtool fetch in Cacti fails to function properly on rrdtool files with NaN values in the output bug: Accept "Connection refused" on TCP ping tests bug: Add missing row selection javascript to graph preview The fetch function is normally used internally by the graph function to get data from RRDs. for EET timezone, '8:00 Mar 27 1999 +2 days' = '8:00 Mar 29 1999', but since there is 1-hour DST forward clock adjustment that occurs around 3:00 Mar 28 1999, the actual time interval between 8:00 Mar 27 1999 and 8:00 Mar 29 1999 equals 47 hours; on the other hand, '8:00 Mar 27 1999 +48 hours' = '9:00 Mar 29 1999', as expected). the consolidation function that is applied to the data you want to fetch (AVERAGE,MIN,MAX,LAST). The at-style specification consists of two parts: the TIME REFERENCE specification and the TIME OFFSET specification. PHP rrd_fetch - 13 examples found. I've got a cronjob set to run every 10 minutes that should run the update command, but when I dump the contents of the rrd file afterwards, all values show up as NaN. btw, if you want to use 'rrdtool fetch' to check your single data point at time 1293581677 then you should do this: rrdtool fetch filename.rrd AVERAGE -s 1293581676 -e 1293581676 . ds[proc].unknown_sec = 0, After enabling DEBUG for poller I see e.g. epoch is useful to disambiguate between a timestamp value and some forms of abbreviated date/time specifications, because it allows one to use time offset specifications using units, eg. We’ll occasionally send you account related emails. 1403377500: -nan privacy statement. Adding updates but fetch shows NaNs. Please note that due to thread-safety reasons, the time specified with -s and -e cannot use the complex forms described in "AT-STYLE TIME SPECIFICATION". RRD dump to CSV. I was hoping someone could help me understand how values are computed in RRD. By default, It consists of a sign (+ or -) and an amount. The .rrd files look good when I use "rrdtool info". The only accepted arguments are "simple integers". I got a temp database (create below). OK u:0.01 s:0.00 r:0.27 19970703 12:45 -- 12:45 July 3th, 1997 (my favorite, and it has even got an ISO number (8601)). But with "rrdtool fetch AVERAGE" I see only nan values. rrdtool info filename [--daemon|-d address [--noflush|-F]]. Active 3 years, 1 month ago. GitHub Gist: instantly share code, notes, and snippets. ds[proc].value = 1.8800000000e+02 2- L'as tu bien entourée de backquotes ` … -1month or -1m -- current time of day, only a month before (may yield surprises, see NOTE3 above). It may also be that you are looking at a mirror page which did not copy the CSS for this page. start of the time series. The data fetched is printed to stdout. It is in some ways accurate because leaving aside missed wrap-arounds and resets that many bits did pass through that interface for the time specified. NOTE3: If you specify time offset in days, weeks, months, or years, you will end with the time offset that may vary depending on your time reference, because all those time units have no single well defined time interval value (1 year contains either 365 or 366 days, 1 month is 28 to 31 days long, and even 1 day may be not equal to 24 hours twice a year, when DST-related clock adjustments take place). this in poller.log: 1402773300: 8.5000000000e+01. results, e.g. It uses RPN math for this. 1402758600: -nan. Create db: ... rrdtool fetch test.rrd AVERAGE -s 1509908400 screen (all fetch types show -nans) dump is similar: screen. But it is strange. I use rrdtool 1.4.8. rrdtool info localhost_proc_37.rrd | grep ds This may lead to some surprising (or even invalid!) The fetch function is normally used internally by the graph function to get data from RRDs. In fact, I tried to make a simpler test with 1 DS, something like: rrdtool create x.rrd \ DS:test1:DERIVE:100:U:U \ RRA:AVERAGE:0.5:48:24 \ RRA:AVERAGE:0.5:1488:31 rrdtool update x.rrd N:13 rrdtool update x.rrd N:30 rrdtool update x.rrd N:45 But I couldn't get any values: rrdtool fetch x.rrd AVERAGE test1 1196928000: NaN 1196942400: NaN 1196956800: NaN … If you see this text, this means ds[proc].type = "GAUGE" and look at the last 10-20 lines. The graphical It is unclear to me why I see useful data with "info" but get only nan data with "fetch AVERAGE". So "1272535035" refers to "09:57:15 (UTC), April 29th 2010" and "-3600" means "one hour ago". 12/31/99 11:59pm -- 1 minute to the year 2000 for imperialists. 1- Es-tu sûr de ta commande snmp ? ds[proc].min = 0.0000000000e+00 *UNKNOWN* data is often represented by the string "NaN" depending on your OS 's printf function. that your browser does not support CSS2. The data fetched is printed to stdout. These units can be used in singular or plural form, and abbreviated naturally or to a single letter (e.g. In order to get RRDtool to fetch anything other than the finest resolution RRA both the start and end time must be specified on boundaries that are multiples of the desired resolution. Consider now that you want to fetch the 15 minute average data for the last hour. à l'aide svp, la deadline approche et j'ai encor beaucoup de choses à faire !! 5 minute averages, will be chosen which in this case is not what you want. Assuming, you've got some valid rrdtool update in step 3, perform a rrdtool fetch AVERAGE. RRDtool can be easily integrated in shell scripts, perl, python, ruby, lua or tcl applications. The fetch function is normally used internally by the graph function to get data from RRD s. fetch will analyze the RRD and try to retrieve the data in the resolution requested. see the -l option in the rrdcached manual. rrdtool tune --maximum : for all existing rrd files belonging to that Data Template. ds[proc].unknown_sec = 0, rrdtool fetch localhost_proc_37.rrd AVERAGE, 1402757400: -nan fetch will analyze the RRD and try to retrieve the data in the resolution requested. 12am 01/01/01 -- start of the new millennium. On its own part, time reference consists of a time-of-day reference (which should come first, if present) and a day reference. I already read that the MIN and MAX values are important. 1403378100: 1.0300000000e+02 NOTE1: this is different from the original at(1) behavior, where a single-number date is interpreted as MMDD[YY]YY. 1403378400: 8.5120000000e+01 The .rrd files look good when I use "rrdtool info". 931200300 -- 18:45 (UTC), July 5th, 1999 (yes, seconds since 1970 are valid as well). resultatet viser dette: 1491270300: -nan 1491270600: -nan 1491270900: -nan 1491271200: -nan 1491271500: -nan 1491271800: -nan 1491272100: -nan 1491272400: -nan 1491272700: -nan 1491273000: -nan 1491273300: -nan . start+6hours or s+6h -- 6 hours after start time (may be used as end time specification). Successfully merging a pull request may close this issue. rrdtool fetch filename CF [--resolution|-r resolution] [--start|-s start] [--end|-e end] [--align-start|-a] [--daemon|-d address]. rrdtutorial - Alex van den Bogaerdt's RRDtool tutorial DESCRIPTION. DESCRIPTION. +3days, -1wk, -3y). Consider the following example: This RRD collects data every 10 seconds and stores its averages over 5 minutes, 15 minutes, 1 hour, and 1 day, as well as the maxima for 1 hour and 1 day. to your account. Several time units can be combined (e.g., -5mon1w2d) or concatenated (e.g., -5h45min = -5h-45min = -6h+15min = -7h+1h30m-15min, etc.). ds[proc].minimal_heartbeat = 600 the end of the time series in seconds since epoch. res are missing, then the mirror may not have picked up the contents of the inc directory. Whitespace can be inserted freely or omitted altogether. Have a question about this project? ds[proc].max = 1.0000000000e+03 RRDtool is written by Tobias Oetiker with contributions from many people all around the world. 1000000 ( I have tested other value but without succes) - please perform an "rrdtool fetch AVERAGE" and post the last 10 lines of the outcome to see, whether data is stored and perhaps "only" graphing fails. 06/21/2014 05:35:02 PM - SYSTEM STATS: Time:0.7291 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:6 RRDsProcessed:5. Now refers to the current moment (and is also the default time reference). *UNKNOWN* data is often represented by the string ``NaN'' depending on your OSs printf function. The text was updated successfully, but these errors were encountered: how about logging the data you are feeding to rrdtool update ? Automatically adjust the start time down to be aligned with the resolution. 1403377200: -nan 1.903, -0.424, etc.) See "RESOLUTION INTERVAL". end-3weeks or e-3w -- 3 weeks before end time (may be used as start time specification). Ask Question Asked 3 years, 1 month ago. This document is written by Alex van den Bogaerdt to help you understand what RRDtool is and what it can do for you. What does this mean? NOTE: The content of this website is accessible with any browser. The following environment variables may be used to change the behavior of rrdtool fetch: If this environment variable is set it will have the same effect as specifying the --daemon option on the command line. The time reference specification is used, well, to establish a reference moment in time (to which the time offset is then applied to). $ rrdtool update temperature-2.rrd 1377097800:140 $ rrdtool fetch temperature-2.rrd AVERAGE --start 1377096300 --end 1377097800 temp.kelvin You can suffix it with am or pm or use 24-hours clock. If you find NaN's there, perform rrdtool info and check the ds[…].min and ds[…].max entries, e.g. Address of the rrdcached daemon. 1402772700: 8.5000000000e+01 I'm trying to update an rrd file with new data every 10 minutes. At this step, it is wise to check step and heartbeat of the rrd file as well. 402772400: 8.5000000000e+01 OK u:0.01 s:0.00 r:0.32 This allows rrdtool to return fresh data even if the daemon is configured to cache values for a long time. Monday), or one of the words: yesterday, today, tomorrow. This avoids the need for external calculations described in "RESOLUTION INTERVAL", In this case you should either quote the whole phrase to prevent it from being taken apart by your shell or use '_' (underscore) or ',' (comma) which also count as whitespace (e.g., midnight_Thu or midnight,Thu). though if a specific RRA is desired this will not ensure the start and end fall within its bounds. If both are present, the command line argument takes precedence. There are, however, cases when whitespace is required (e.g., 'midnight Thu'). By clicking “Sign up for GitHub”, you agree to our terms of service and ds[loss].min = 0.0000000000e+00 ds[loss].max = 1.0000000000e+02 rrdtool fetch returns all -nan. What else can be the reason for only getting nan values? However often the graphs are interpreted incorrectly as … rrdtool info localhost_proc_37.rrd | grep ds, ds[proc].index = 0 to make sure you are feedin what you think you are feeding? ds[proc].min = 0.0000000000e+00 noon yesterday -3hours -- yesterday morning; can also be specified as 9am-1day. rrdtool fetch test.rrd AVERAGE --start 920804700--end 920805300 920805000 : 4.0000000000e-02 920805300 : 2.0000000000e-02 920805600 : nan # Not A Number It can be also NAN, U or UNKN 4.5 - Graph A time in seconds since epoch (1970-01-01) is required. rrdtool fetch rn23.rrd MAX --start 1491210243 --end now. The day can be specified as month-name day-of-the-month and optional a 2- or 4-digit year number (e.g. ds[proc].index = 0 Sign in An optional suffix may be used (e.g. March 8 1999). fetch will analyze the RRD and try to retrieve the data in the resolution requested. rrdtool is showing the average rate for that time period. Consider upgrading to a standard conformant I already read that the MIN and MAX values are important. The fetch function is normally used internally by the graph function to get data from RRDs. but it will return data even if no absolute match is possible. You might try rrdtool fetch subdata.rrd AVERAGE -r 15m -s -1h However, this will almost always result in a time series that is NOT in the 15 minute RRA. epoch+19711205s unambiguously denotes timestamp 19711205 and not 1971-12-05 00:00:00 UTC. 1403365200: -nan, rrdtool info localhost_proc_7.rrd | grep ds ds[proc].last_ds = "97" if you specify the time itself (1293581677) then you'll get the *next* data point, not the one you specified. If you ever owned a classic HP calculator, you may still remember how RPN math works. > rrdtool fetch x.rrd -r 300 \-s 1200000600 -e 1200000900 AVERAGE 1200000900: 4.0000000000e+01 1200001200: 5.0000000000e+01 thenpull900seconds > rrdtool fetch x.rrd -r300 \-s 1200000000 -e 1200000900 AVERAGE 1200000600: 2.5000000000e+01 1200001200: 4.5000000000e+01 You can rate examples to help us … The data fetched is printed to stdout. a flush command is sent to the server before reading the RRD files. Using the bash shell, this could look be: Apart from the traditional Seconds since epoch, RRDtool does also understand at-style time specification. NOTE2: if you specify the day in this way, the time-of-day is REQUIRED as well. However, this will almost always result in a time series that is NOT in the 15 minute RRA. Ved nogen jer, hvorfor det kun genkendte tidsstemplet, men ikke temperaturen? *UNKNOWN* data is often represented by the string "NaN" depending on your OS's printf function. You can also specify the day as a full date in several numerical formats, including MM/DD/[YY]YY, DD.MM. 06/21/2014 05:35:02 PM - SYSTEM STATS: Time:0.7291 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:6 RRDsProcessed:5, polloer.log Hi, i'm beginer in programmer I need a script for read file.rrd from gw and detect the traffic limit out and in and send mail warning, but I want have data for reading humans. ds[proc].max = 1.0000000000e+03 Consider now that you want to fetch the 15 minute average data for the last hour. log.txt (just make sure): screen. For all the others there is a little example below, that shows how to do a little addition in RPN. The name of the RRD you want to examine.--daemon|-d address. The documentation provided with RRDtool … The words now, start, end can be abbreviated as n, s, e. The time offset specification is used to add/subtract certain time intervals to/from the time reference moment. ds[proc].last_ds = "94" Already on GitHub? try this: rrdtool create --step 1 \ DS:Test:GAUGE:15:0:u \ DS:Test1:COUNTER:15:0:u \ RRA:AVERAGE:0.5:1:50 ----- After the file is created issue the command: rrdtool update N:100:100 Execute it couple of times (maybe 5 times, just to be sure.. hehehe) then fetch … The time-of-day can be specified as HH:MM, HH.MM, or just HH. The info function prints the header information from an RRD in a parsing friendly format.. 1402758300: -nan resultatet visar detta: 1491270300: -nan 1491270600: -nan 1491270900: -nan 1491271200: -nan 1491271500: -nan 1491271800: -nan 1491272100: -nan 1491272400: -nan 1491272700: -nan 1491273000: -nan 1491273300: -nan . To cope with this, when you use days, weeks, months, or years as your time offset units your time reference date is adjusted accordingly without too much further effort to ensure anything about it (in the hope that mktime(3) will take care of this later). But this does not seem to be the reason for the issue. Hi, Thanks for your reply. The data fetched is printed to stdout. *UNKNOWN* data is often represented by the string "NaN" depending on your OS's printf function. RPN basics: Step 0 15+23 = 38 1: NAN 2: NAN 3: NAN one day worth of data will be fetched. If specified, *UNKNOWN* data is often represented by the string "NaN" depending on your OS's printf function. ds[proc].value = 1.9400000000e+02 The data fetched is printed to stdout. 1403377800: -nan 5m instead of 300 seconds). For a list of accepted formats, Or if some pictu Finally, you can use the words now, start, end or epoch as your time reference. See also "AT-STYLE TIME SPECIFICATION" for a detailed explanation on ways to specify the start time. Negative numbers are relative to the current time. 1402757700: -nan Currently I have the same situation again: rrdtool fetch localhost_proc_7.rrd AVERAGE It works after restarting the snmpd. or KDE's Konqueror for example. $ rrdtool fetch /tmp/x*.rrd AVERAGE -s 1288566000 -e 1291158000 -r 300 | head cpu_idle 1288566600: nan 1288567200: nan 1288567800: nan 1288568400: nan 1288569000: nan 1288569600: nan 1288570200: nan 1288570800: nan OK u:0.01 s:0.00 r:0.36 402772100: 8.5000000000e+01 These are the top rated real world PHP examples of rrd_fetch extracted from open source projects. The specification is called "at-style" after the Unix command at(1) that has moderately complex ways to specify time to run your job at a certain date and time. The data is produced by Cacti. rrdtool fetch rn23.rrd MAX --start 1491210243 --end now. The data fetched is printed to stdout. the interval you want the values to have (seconds per value). The end-time is adjusted by the same amount. filename Opera but also Apple's Safari Month and day of the week names can be used in their naturally abbreviated form (e.g., Dec for December, Sun for Sunday, etc.). rrdinfo SYNOPSIS. However, when compiled on 64bit RHEL5, rrdtool fetch returns 'nan'. 1402773000: 8.5000000000e+01 You might try. I need convert numbers In, Out in Mbps/s I found this command with awk, but a want in shell Ex: In contrast, hours, minutes, and seconds are well defined time intervals, and these are guaranteed to always produce time offsets exactly as specified (e.g. Vet ni varför det bara kände igen tidsstämpeln men inte temperaturen? For standard 300 seconds polling intervals (step=300), it is wise to set minimal_heartbeat to 600 seconds. ds[proc].type = "GAUGE" *UNKNOWN* data is often represented by the string "NaN" depending on your OS's printf function. both start and end time are a multiple of 900 (, both start and end time are within the desired RRA. OK u:0.01 s:0.00 r:0.55 However, when I run rrd fetch I get a lot of NaN values (between a quarter and a third of values) so the generated graphs have gaps too. My Cacti installation gives only nan values. The fetch function is normally used internally by the graph function, to get data from RRD s. fetch will analyze the RRD and will try to retrieve the data in the resolution requested. NAME. 'May 31 -1month' = 'Apr 31' (meaningless) = 'May 1' (after mktime(3) normalization); in the EET timezone '3:30am Mar 29 1999 -1 day' yields '3:30am Mar 28 1999' (Sunday) which is an invalid time/date combination (because of 3am -> 4am DST forward clock adjustment, see the below example). 1403378700: 8.5000000000e+01. quand j utilise la commande rrdtool fetch pour visualiser le contenue de ma base ca me donne des NaN: Not a Number. But with "rrdtool fetch AVERAGE" I see only nan values. Check rrdcreate if you are uncertain about the meaning of the individual keys.. filename. 1402758000: -nan You signed in with another tab or window. *UNKNOWN* data is often represented by the string ``NaN'' depending on your OS's printf function. See also "AT-STYLE TIME SPECIFICATION" for a detailed explanation of how to specify the end time. But this does not seem to be the reason for the issue. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. RRDtool lets you apply math operations to the data prior to showing it to the user. NOTE4: The single-letter abbreviation for both months and minutes is m. To disambiguate them, the parser tries to read your mind :) by applying the following two heuristics: Final NOTES: Time specification is case-insensitive. We can now retrieve the data from our database using "rrdtool fetch": rrdtool fetch test.rrd AVERAGE --start 920804400 --end 920809200 It should return the following output: speed 920804700: nan 920805000: 4.0000000000e-02 920805300: 2.0000000000e-02 920805600: 0.0000000000e+00 920805900: 0.0000000000e+00 920806200: 3.3333333333e-02 … 23:59 31.12.1999 -- 1 minute to the year 2000. If specified, … fetch will analyze the RRD and try to retrieve the data in the resolution requested. Positive values are interpreted as seconds since epoch, negative values (and zero) are interpreted as relative to now. The fetch function is normally used internally by the graph function to get data from RRD s. fetch will analyze the RRD and try to retrieve the data in the resolution requested. The data fetched is printed to stdout. filename the name … Compiling rrdtool on 64bit RHEL 6, rrdtool fetch returns '-nan' for UNKNOWN. I don't "feed" anything. Address of the rrdcached daemon. I created the file with: rrdtool create file.rrd -s 21600 DS:offset:GAUGE:21600:U:U RRA:MAX:0:1:360 I add the data with: rrdtool update file.rrd N: (E.g. This "breaks" applications looking for 'nan' (OpenNMS). OK u:0.01 s:0.00 r:0.50 The following time units can be used to specify the amount: years, months, weeks, days, hours, minutes, or seconds. When present, it should come first, when omitted, it defaults to now. design though relies completely on CSS2 styles. Rn23.Rrd MAX -- start rrdtool fetch nan -- end now averages, will be chosen which in this is. -S 1509908400 screen ( all fetch types show -nans ) dump is:. You want the values to have ( seconds per value ) a detailed on... 'S printf function yield surprises, see NOTE3 above ) the default time ). Min and MAX values are computed in RRD 1402773300: 8.5000000000e+01 ( may be used end! Around the world these units can be the reason for only getting NaN values ; can be. Are interpreted as seconds since epoch ( 1970-01-01 ) is required as )! Match is possible, negative values ( and zero ) are interpreted as seconds since.... Help me understand how values are computed in RRD the CSS for this page and not 1971-12-05 UTC. 1491210243 -- end now rrdtool tutorial DESCRIPTION '' applications looking for 'nan ' create below ) is showing AVERAGE... Both are present, it is wise to set minimal_heartbeat to 600.! 10 minutes also specify the end time specification ) screen ( all fetch show! Below, that shows how to specify the start time ( may be in... Seconds polling intervals ( step=300 ), July 5th, 1999 (,. Max -- start 1491210243 -- end now required as well 'midnight Thu ' ) step and heartbeat the... Within the desired RRA or if some pictu res are missing, the! With new data every 10 minutes printf function MAX values are important data will be chosen which in this,. The day in this case is not what you want to fetch AVERAGE! ( or even invalid!, it is wise to set minimal_heartbeat to 600 seconds support CSS2 calculator... Invalid! the -l option in the resolution requested me why i see only values... Max -- start 1491210243 -- end now “ sign up for a long time 19711205 and not 1971-12-05 UTC! After start time down to be the reason for the issue AT-STYLE time specification ) --!, and snippets ( or even invalid! specification ) the only accepted arguments are simple. Of accepted formats, see NOTE3 above ) copy the CSS for this page since 1970 are valid as )! Info filename [ -- noflush|-F ] ] desired RRA computed in RRD math works successfully, but it will data! Feedin what you think you are feeding design though relies completely on CSS2 styles intervals step=300. Individual keys.. filename do a little addition in RPN detailed explanation on to... Css2 styles et j'ai encor beaucoup de choses à faire! that the MIN and MAX values are as. Step, it is wise to check step and heartbeat of the and! As well ( create below ) Opera but also Apple 's Safari or KDE 's Konqueror for.... 'Midnight Thu ' ) internally by the string `` NaN '' depending on your OS 's function... Or KDE 's Konqueror for example little example below, that shows to! For the LAST hour your time reference specification and the time reference useful data ``. Share code, notes, and it has even got an ISO number ( e.g all fetch types -nans... -- yesterday morning ; can also be specified as 9am-1day Firefox or Opera but also Apple Safari! Or epoch as your time reference function that is not what you want ruby lua. And optional a 2- or 4-digit year number ( e.g of 900 (, both start and end (. Compiling rrdtool on 64bit RHEL5, rrdtool fetch AVERAGE '' i rrdtool fetch nan only NaN?! Do a little example below, that shows how to do a addition! Day-Of-The-Month and optional a 2- or 4-digit year number ( 8601 ) ) are missing, then the may... Are looking at a mirror page which did not copy the CSS for this page day-of-the-month and a. Me understand how values are important no absolute match is possible den Bogaerdt 's tutorial... But also Apple 's Safari or KDE 's Konqueror for example for 300! ), it is wise to set minimal_heartbeat to 600 seconds rrdtool fetch nan: about... Lua or tcl applications remember how RPN math works -3hours -- yesterday morning ; also! On ways to specify the end time specified as HH: MM, HH.MM, or just HH 00:00:00! + or - ) and an amount scripts, perl, python, ruby, lua or tcl applications end! Flush command is sent to the year 2000 returns '-nan ' for UNKNOWN '' but get only NaN values start... The header information from an RRD in a parsing friendly format clicking “ sign for. Easily integrated in shell scripts, perl, python, ruby, lua or applications... -- 3 weeks before end time are within the desired RRA `` AT-STYLE time specification '' for a explanation. On ways to specify the day can be easily integrated in shell scripts,,. Uncertain about the meaning of the words: yesterday, today, tomorrow averages, will be fetched then mirror... Some surprising ( or even invalid! not have picked up the of. Time down to be the reason for the LAST hour 300 seconds polling intervals ( )! Before reading the RRD and try to retrieve the data you are feeding to rrdtool update ( or invalid... Specify the day in this way, the time-of-day is required that your browser does not seem to be reason... And an amount a flush command is sent to the data you want to fetch (,... Data will be chosen which in this way, the command line argument takes precedence simple integers '' RPN! Ved nogen jer, hvorfor det kun genkendte tidsstemplet, men ikke temperaturen examples of rrd_fetch extracted from source. Open an issue and contact its maintainers and the community the -l option in the resolution requested list. Means that your browser does not support CSS2 daemon is configured to values... Be fetched the RRD file as well the only accepted arguments are `` simple integers '' our... After start time specification '' for a detailed explanation of how to do a little addition in RPN the of. Valid rrdtool fetch nan well get data from real world PHP examples of rrd_fetch extracted open. ), July 5th, 1999 ( yes, seconds since 1970 are valid as well function is used... Values are computed in RRD - ) and an amount as 9am-1day an in... Always result in a time in seconds since epoch, negative values ( and is the... Merging a pull request may close this issue this may lead to some surprising or! The values to have ( seconds per value ) use the words:,! Words: yesterday, today, tomorrow as a full date in numerical... To update an RRD in a time series that is not what you to!, LAST ) for UNKNOWN for UNKNOWN for only getting NaN values dump similar... 23:59 31.12.1999 -- 1 minute to the year 2000 command line argument takes precedence intervals ( step=300 ), is... Form, and it has even got an ISO number ( e.g is possible compiled! At-Style time specification ) Gist: instantly share code, notes, and abbreviated naturally to. Or use 24-hours clock computed in RRD LAST ) be specified as 9am-1day OS... -L option in the resolution requested and it has even got an ISO number ( 8601 ).! About the meaning of the RRD you want rrdtool fetch nan fetch the 15 minute RRA extracted from open projects... Returns 'nan ' this text, this means that your browser does not seem to the! The individual keys.. filename sure you are uncertain about the meaning of the directory... Occasionally send you account related emails may not have picked up the contents of the inc directory epoch as time... Up the contents of the RRD and try to retrieve the data you want rrdtool fetch nan step and heartbeat of time. Means that your browser does not seem to be aligned with the requested... Averages, will be fetched is not in the rrdcached manual to 600 seconds present, it is to! Of data will be chosen which in this way, the time-of-day required! Oetiker < Oetiker @ ee.ethz.ch > with contributions from many people all around the world (, start. Chosen which in this way, the time-of-day is required to check step and heartbeat the... Missing, then the mirror may not have picked up the contents the! 8.5000000000E+01 402772400: 8.5000000000e+01 1402773300: 8.5000000000e+01 1402772700: 8.5000000000e+01 1402773300: 8.5000000000e+01 of formats. Time period you can suffix it with am or pm or use 24-hours clock (,. The header information from an RRD in a parsing friendly format series in seconds since epoch ( 1970-01-01 is. * UNKNOWN * data is often represented by the graph function to get from. A flush command is sent to the server before reading the RRD and try match., you can suffix it with am or pm or use 24-hours clock used internally by the ``... Of how to specify the day can be specified as month-name day-of-the-month and optional a or! Graphical design though relies completely on CSS2 styles NaN '' depending on your OS 's printf function data!, see the -l option in the resolution detailed explanation of how to specify the end of time... Ll occasionally send you account related emails screen ( all fetch types show )! A 2- or 4-digit year number ( e.g to open an issue and contact its maintainers and the OFFSET.