The parameter defines which consolidation functions are used in round robin archives (RRAs) when creating new RRD files. Each data source name should specify the data source type.Valid data source types (DSTs) are GAUGE, COUNTER, DERIVE and ABSOLUTE.
Every RRD works with a “step rate”, which tells us how far the data points are located from each other.
Normally this is 300 seconds (5 minutes) so all data is stored in a 5 minute interval.
This option can only be given once, so the script must handle all of the external test-data. Note that this is NOT needed if your custom graphs are generated by the NCV (Name Colon Value) module described below, it is only required for data where you have a custom script to parse the status message and extract the data that is put into the graph.
--extra-tests=TEST[, TEST] List of testnames that are handled by the external script. Note that NCV graphs should NOT be listed here, but in the TEST2RRD environment variable - see below. BBRRDS Default directory where RRD files are stored.
Because the servertime was running ahead the timestamps (the last update time) in the RRD files are in the future. Set the right time on the server if you have not done this yet.
You can calculate the time it will take before the RRD files will start to update again: 1341675817 seconds – 1341654743 seconds = 21047 / 60 to calculate minutes / 60 to calculate hours = 5.8 hours.
This doesn’t mean you only can add data every 5 minutes though.
You can add as much data into the RRD and at any time you like. If you have a default step rate of 5 minutes but you add some data every minute to your RRD, it will average these 5 values into 1 data point.
Assume, for example, that the old value is 5 Billion (5 ⋅ 10, a maximum value can be configured.