Archive for the 'Monitoring' Category



May 16 2009

Graph Number of Freeradius Sessions with MRTG

Published by under Freeradius,Monitoring

You can easily graph Freeradius number of active sessions with a simple shell script, if you store accounting data in a SQL database. Use the script below for Mysql that you can easily adapt to other databases like Oracle or PostgreSQL. Check the complete list of supported databases by Freeradius.  A certain number of sessions […]

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Apr 10 2009

Monitor AS400 Resources with MRTG

Published by under AS400,Monitoring

It is recommended to monitor AS400 CPU load with OID . that returns a value based on 10,000. It needs then to be divided by 100 to get a percentage. The 2nd disadvantage is that the result is slightly wrong, the integer part only being returned. OID HOST-RESOURCES-MIB::hrProcessorLoad.2 from an IBM i5 520 gives the […]

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Mar 19 2009

Graph Only One Value in MRTG

Published by under Monitoring

MRTG needs at least 2 values to generate graphs. Thus, Most configurations contain the same OID twice in the target line. This leads to 2 problems: – The same data is collected twice which requires more bandwidth, especially when a large number of hosts is monitored – The value may vary during this very short […]

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