...
| RRD Type | Old File Size | New File Size | % Increase |
|---|---|---|---|
| Interface (ifInOctets and ifOutOcts) | 581112 bytes | 1391364 bytes | 239% |
| Packet data | 1933120 bytes | 4264508 bytes | 220% |
How would I configure NMIS8 to poll every 1 minute and keep 8 days of raw data?
To configure NMIS8 to keep 8 days of raw data (with 1 minute polls) and 32 days of 30 minutes of interface data you would make the following change to all the sections.
| Keep (days) | Summarise (minutes) | Model Entry | Default Value | New Value |
|---|---|---|---|---|
| 8 days | 1 minutes | rows_day | 2304 | 11520 |
| 32 days | 30 minutes | rows_week | 1536 | 1536 (no change) |
I can get these results using the RRD Calculator this is the screen shot, I have changed the default of 5 minutes to 1 minute.
The interface entry for the Common-database.nmis model would look like this after the change:
| Code Block | ||
|---|---|---|
| ||
'interface' => {
'step_year' => '288',
'rows_month' => '2268',
'rows_year' => '1890',
'step_day' => '1',
'step_month' => '24',
'step_week' => '6',
'rows_day' => '9216',
'rows_week' => '4608'
}, |
This change should be made to the following sections:
- reachability
- interface
- default
- metrics
Can I migrate existing NMIS8 RRD files to the new scheme
...
This takes a second or two to complete. This process can be scripted easily enough, and there is a template for this has been, this is included in the NMIS8 distribution in /path/to/nmis8/admin/rrd_file_updateresize.pl, the script would need to determine the RRA numbers by running rrdtool info first and then execute the above rrdtool resize commands for each RRD filewill determine what RRA's need to be updated and then resize them accordingly.
Where are NMIS RRD Files Stored?
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NMIS8 is a powerful network management system which can keep as much data as you have disk space to store, the defaults make sense for most organisations and provide a good balance between statistical granularity and disk space.