The fetch function is normally used internally by the graph function to get data from RRDs. Address of the rrdcached daemon. I need convert numbers In, Out in Mbps/s I found this command with awk, but a want in shell Ex: if you specify the time itself (1293581677) then you'll get the *next* data point, not the one you specified. 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. Or if some pictu It works after restarting the snmpd. The following time units can be used to specify the amount: years, months, weeks, days, hours, minutes, or seconds. Currently I have the same situation again: rrdtool fetch localhost_proc_7.rrd AVERAGE ds[proc].value = 1.9400000000e+02 OK u:0.01 s:0.00 r:0.27 I already read that the MIN and MAX values are important. this in poller.log: RPN basics: Step 0 15+23 = 38 1: NAN 2: NAN 3: NAN 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". Active 3 years, 1 month ago. start of the time series. The data fetched is printed to stdout. But this does not seem to be the reason for the issue. 12/31/99 11:59pm -- 1 minute to the year 2000 for imperialists. PHP rrd_fetch - 13 examples found. 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 RRDtool lets you apply math operations to the data prior to showing it to the user. If you find NaN's there, perform rrdtool info and check the ds[…].min and ds[…].max entries, e.g. rrdtool fetch filename CF [--resolution|-r resolution] [--start|-s start] [--end|-e end] [--align-start|-a] [--daemon|-d address]. *UNKNOWN* data is often represented by the string "NaN" depending on your OS's printf function. This "breaks" applications looking for 'nan' (OpenNMS). ds[proc].last_ds = "94" See also "AT-STYLE TIME SPECIFICATION" for a detailed explanation on ways to specify the start time. 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. The at-style specification consists of two parts: the TIME REFERENCE specification and the TIME OFFSET specification. log.txt (just make sure): screen. 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. 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. cacti.log: 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. privacy statement. though if a specific RRA is desired this will not ensure the start and end fall within its bounds. What else can be the reason for only getting nan values? to make sure you are feedin what you think you are feeding? 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 ds[proc].max = 1.0000000000e+03 rrdtool info localhost_proc_37.rrd | grep ds, ds[proc].index = 0 rrdtool fetch rn23.rrd MAX --start 1491210243 --end now. Consider now that you want to fetch the 15 minute average data for the last hour. 402772100: 8.5000000000e+01 GitHub Gist: instantly share code, notes, and snippets. *UNKNOWN* data is often represented by the string ``NaN'' depending on your OS's printf function. 1402758000: -nan It uses RPN math for this. 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