Network Monitoring and Data Center Operation - SOI-Asia

RRDtool-Practice -Example•Object Gigabit Ethernet Switch•Definition Definition of RRD recordIntervalNum of RRDfileStoragePeriodGraph1 minute3606 hours4 hours5 minutes5762 daysDaily2 hours60050 daysMonthly1 day7312 yearsYearly4 days91510 years10 years Ability to describe peak graph from data of 1-day to 10-yearsRRDtool-Create -Set up a new Round Robin Database (RRD)Command Example/usr/local/rrdtool-1.0.46/bin/rrdtool create ¥/home/httpd/html/traffic/traffic_vlan.rrf ¥–step 60 ¥DS:vlan2in:counter60:0:125000000 ¥DS:vlan2out:counter60:0:125000000 ¥DS:vlan7in:counter60:0:125000000 ¥DS:vlan7out:counter60:0:125000000 ¥:RRA:AVERAGE:0.5:1:360 ¥RRA:AVERAGE:0.5:5:576 ¥RRA:AVERAGE:0.5:120:600 ¥RRA:AVERAGE:0.5:1440:731 ¥RRA:AVERAGE:0.5:5760:915 ¥RRA:MAX:0.2:5:576 ¥RRA:MAX:0.1:120:600 ¥RRA:MAX:0.1:440:731 ¥RRA:MAX:0.1:5760:915 ¥• DS : Define the data item COUNTER: continuous increasing counters 60 : if no new data is supplied for more than 60sec, it is considered as “unknown” 0 : minimum acceptable value (byte) 125000000 : maximum acceptable value (byte)• RRA (Round Robin Archive) :Define the data consolidations AVARAGE/MAX: average /maximum ofconsolidated of data 0.5 : consolidation interval is be made up from*UNKNOWN* data while the consolidated value isstill regarded as known.- Average 50%. MAX 20% or 10% 1: consolidated data point where the data thengoes into the archive 360 : how many generations of data values arekept in RRA21