e4c9153d16
* fix a few bare URLs * make mdl happy * make Weathermap.md as mdl happy as possible * make Varnish.md as mdl happy as possible * make Two-Factor-Auth.md mdl happy * touch one header for Syslog.md, but little can be done about the rest * make Sub-Directory.md as mdl happy as possible * make SNMP-Trap-Handler.md lint happy * make SNMP-Proxy.md mdl happy * make Smokeping.md as mdl happy as possible * make Services.md mdl happy * make RRDTune.md mdl happy * cleanup RRDCached.md as much as possible * make RRDCached-Security.md mdl happy * make Rancid.md as mdl happy as possible * make Proxmox.md mdl happy * make Plugin-System.md as mdl happy as possible * make PeeringDB.md mdl happy * make Oxidized.md more lint happy * make Network-Map.md mdl happy * make MIB-based-polling.md as mdl happy as possible * make Metric-Storage.md mdl happy * make IRC-Bot.md as mdl happy as possible * make IRC-Bot-Extensions.md as mdl happy as possible * make * make Graylog.md mdl happy * make Gateone.md mdl happy * make Fast-Ping-Check.md mdl happy * make Distributed-Poller.md as mdl happy as possible * make Dispatcher-Service.md as mdl happy as possible * make Device-Groups.md mdl happy * make Dell-OpenManage.md mdl happy * make Dashboard.md mdl happy * make Customizing-the-Web-UI.md as mdl happy as possible * make Component.md mdl happy * make Billing-Module.md mdl happy * make Auto-Discovery.md mostly mdl happy * make Authentication.md as mdl happy as possible * tidy up a few lines in Applications.md * make Agent-Setup.md as mdl happy as possible * make metrics/OpenTSDB.md mdl happy * spelling fix
1.1 KiB
source: Extensions/RRDTune.md path: blob/master/doc/
RRDTune
When we create rrd files for ports, we currently do so with a max value of 12500000000 (100G). Because of this if a device sends us bad data back then it can appear as though a 100M port is doing 40G+ which is impossible. To counter this you can enable the rrdtool tune option which will fix the max value to the interfaces physical speed (minimum of 10M).
To enable this you can do so in three ways!
- Globally under Global Settings -> External Settings -> RRDTool Setup
- For the actual device, Edit Device -> Misc
- For each port, Edit Device -> Port Settings
Now when a port interface speed changes (this can happen because of a physical change or just because the device has misreported) the max value is set. If you don't want to wait until a port speed changes then you can run the included script:
./scripts/tune_port.php -h <hostname> -p <ifName>
Wildcards are supported using *, i.e:
./scripts/tune_port.php -h local* -p eth*
This script will then perform the rrdtool tune on each port found using the provided ifSpeed for that port.
Run ./scripts/tune_port.php to see help page.